Merge branch 'main' of cau-git.rz.uni-kiel.de:nt/mitarbeiter/silas/imdd_simulation
# Conflicts: # Classes/04_DSP/Equalizer/FFE_adaptive_decision.m
This commit is contained in:
sioe
@@ -27,6 +27,7 @@ name = ['wh_',strrep(num2str(now),'.','')];
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wh = DataStorage(params);
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wh.addStorage("Rx_Bits");
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wh.addStorage("ber_ffe");
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%% Init Params
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@@ -200,7 +201,7 @@ for M = wh.parameter.M.values
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end
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end
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Rx_bits = PAMmapper(M,0).demap(EQ_sig);
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Rx_bits(i) = PAMmapper(M,0).demap(EQ_sig);
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[~,errors_bm,ber_ffe(i),errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
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disp(['BER: ',sprintf('%.1E',ber_ffe(i)),' - - ROP: ',num2str(patten(i)),'dBm - - PAM-',num2str(M),' - - ',num2str(fsym*1e-9),' GBd']);
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@@ -210,12 +211,14 @@ for M = wh.parameter.M.values
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rop=wh.parameter.rop.values(i);
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wh.addValueToStorage(ber_ffe(i),'ber_ffe',M,datarate,rop);
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wh.addValueToStorage(Rx_bits(i),'Rx_Bits',M,datarate,rop);
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end
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toc
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% wh.save('C:\Users\Silas\Documents\MATLAB\imdd_simulation\projects\MPI_August\auswertung\')
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filename = 'bla3';
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wh.save(['C:\Users\sioe\Documents\MATLAB\imdd_simulation\projects\MPI_August\auswertung\',filename]);
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end
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end
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145
projects/Lab_2024/bias_sweep_evaluation.m
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145
projects/Lab_2024/bias_sweep_evaluation.m
Normal file
@@ -0,0 +1,145 @@
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filename = "C:\Users\sioe\Nextcloud\Dokumente\02_Ablage_Office\Lab_Data_24\bias_sweep\PAM6_10km_ffe__wh.mat";
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a = load(filename);
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wh2 = a.obj;
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m = wh2.getStoValue('m',wh2.parameter.vbias.values(1),wh2.parameter.awg_vpp.values(1));
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v_bias_vals = wh2.parameter.vbias.values;
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awg_vpp_vals = wh2.parameter.awg_vpp.values;
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bers = [];
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rop_measured = [];
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cnt = 0;
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for awg_vpp_cur = awg_vpp_vals
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cnt = cnt+1;
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bers(cnt,:) = wh2.getStoValue('ber',v_bias_vals,awg_vpp_cur);
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rop_measured(cnt,:) = wh2.getStoValue('rop',v_bias_vals,awg_vpp_cur);
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end
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[bestber,bestindex] = min(bers,[],'all');
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[awg_pos,v_bias_pos]=ind2sub(size(bers),bestindex);
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bestawgvpp=awg_vpp_vals(awg_pos);
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bestvbias=v_bias_vals(v_bias_pos);
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disp(['Best Vpp: ',num2str(bestvbias),' V; Best Vpp AWG: ',num2str(bestawgvpp),' V' ])
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figure();
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sgtitle(['PAM ', num2str(m)])
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subplot1 = subplot(1,2,1);
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% Compute the logarithm of BER data
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% Adding a small epsilon to avoid log(0)
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epsilon = 1e-12;
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log_bers = log10(bers + epsilon);
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% Set limits for z-data scaling in log scale
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zmin = log10(1e-4 + epsilon);
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zmax = log10(0.5 + epsilon);
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% Plot the filled contour plot with log-scaled z-data
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contourf_handle = contourf(v_bias_vals, awg_vpp_vals, log_bers, 'Parent', subplot1, "ShowText",true,"LabelFormat", @mylabelfun);
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% Set x and y labels with subscripts for clarity
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xlabel('V_{bias}');
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ylabel('V_{pp} AWG');
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title('BER (Mind used Equalizer!)');
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% Adjust the grid to display white lines
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grid on;
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set(subplot1, 'GridColor', [1 1 1]); % Set grid color to white
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% Set limits for z-data scaling
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clim([zmin zmax]);
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% Adjust the colormap
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colormap(flipud(cbrewer2('RdBu',64)));
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% Add a colorbar and adjust its ticks to represent actual BER values
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c = colorbar;
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% Set colorbar ticks at log-spaced intervals
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tick_values = [1e-4 1e-3 1e-2 1e-1 0.5];
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tick_positions = log10(tick_values + epsilon);
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set(c, 'Ticks', tick_positions, 'TickLabels', arrayfun(@num2str, tick_values, 'UniformOutput', false));
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% Store variables in the figure's application data for use in the data tip function
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setappdata(gcf, 'v_bias_vals', v_bias_vals);
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setappdata(gcf, 'awg_vpp_vals', awg_vpp_vals);
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setappdata(gcf, 'bers', bers);
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setappdata(gcf, 'power', rop_measured); % Store the Power data
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% Set up the data cursor mode to display custom data tips
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dcm_obj = datacursormode(gcf);
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set(dcm_obj, 'UpdateFcn', @customDataTip);
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hold on
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scatter(bestvbias,bestawgvpp,100,"red",'Marker','x','LineWidth',2);
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subplot2 = subplot(1,2,2);
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% Plot the filled contour plot
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contourf_handle = contourf(v_bias_vals, awg_vpp_vals, rop_measured, 'Parent', subplot2);
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% Set x and y labels
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xlabel('V_{bias}');
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ylabel('V_{pp} AWG');
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title('Power at Rx');
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% Adjust the grid to display white lines
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grid on;
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set(subplot2, 'GridColor', [1 1 1]); % Set grid color to white
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% Set limits for z-data scaling
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clim([-5 -3]);
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% Adjust the colormap
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colormap(flipud(cbrewer2('RdBu',64)));
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% Add a colorbar
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colorbar;
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% Store variables in the figure's application data for use in the data tip function
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setappdata(gcf, 'v_bias_vals', v_bias_vals);
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setappdata(gcf, 'awg_vpp_vals', awg_vpp_vals);
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setappdata(gcf, 'bers', bers);
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setappdata(gcf, 'power', rop_measured); % Store the Power data
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% Set up the data cursor mode to display custom data tips
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dcm_obj = datacursormode(gcf);
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set(dcm_obj, 'UpdateFcn', @customDataTip);
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function labels = mylabelfun(vals)
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lab = 10.^vals;
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labels = arrayfun(@(x) num2str(x, '%.1e'), lab, 'UniformOutput', false);
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end
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% Define the custom data tip function
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function txt = customDataTip(~, event_obj)
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% Retrieve stored variables
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v_bias_vals = getappdata(gcf, 'v_bias_vals');
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awg_vpp_vals = getappdata(gcf, 'awg_vpp_vals');
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bers = getappdata(gcf, 'bers');
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power = getappdata(gcf, 'power'); % Retrieve the Power data
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% Get the position of the data cursor
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pos = event_obj.Position;
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xdata = pos(1);
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ydata = pos(2);
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% Find the nearest indices in the data arrays
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[~, xInd] = min(abs(v_bias_vals - xdata));
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[~, yInd] = min(abs(awg_vpp_vals - ydata));
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% Get the corresponding BER and Power values
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berValue = bers(yInd, xInd);
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powerValue = power(yInd, xInd); % Get the Power value
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% Format the text for the data tip
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txt = {['V_{bias} = ', num2str(xdata)], ...
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['V_{pp} AWG = ', num2str(ydata)], ...
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['BER = ', num2str(berValue, '%.1e')], ...
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['Power = ', num2str(powerValue)]};
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end
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124
projects/Lab_2024/bias_sweep_evaluation_2.m
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124
projects/Lab_2024/bias_sweep_evaluation_2.m
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@@ -0,0 +1,124 @@
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filename = "C:\Users\sioe\Nextcloud\Dokumente\02_Ablage_Office\Lab_Data_24\bias_sweep_gigantisch\wh_pam4.mat";
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a = load(filename);
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wh2 = a.wh;
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v_bias_vals = wh2.parameter.vbias.values;
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awg_vpp_vals = wh2.parameter.awg_vpp.values;
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eq_mode_vals = wh2.parameter.eq_mode.values;
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eq_mode_show = eq_mode_vals(2);
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eq_modes = ["FFE","FFE+MLSE","DB precoded","DB encoded"];
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precomp_amp_max_vals = wh2.parameter.precomp_amp_max.values;
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precomp_amp_max_show = precomp_amp_max_vals(2);
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m = wh2.getStoValue('m',wh2.parameter.vbias.values(1),wh2.parameter.awg_vpp.values(1),wh2.parameter.eq_mode.values(1),wh2.parameter.precomp_amp_max.values(1));
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figure();
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sgtitle(['PAM ', num2str(m),' | EQ: ', char(eq_modes(eq_mode_show))])
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for p = 1:numel(precomp_amp_max_vals)
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precomp_amp_max_show = precomp_amp_max_vals(p);
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subplot1 = subplot(2,3,p);
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bers = [];
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rop_measured = [];
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cnt = 0;
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for awg_vpp_cur = awg_vpp_vals
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cnt = cnt+1;
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bers(cnt,:) = wh2.getStoValue('ber',v_bias_vals,awg_vpp_cur,eq_mode_show,precomp_amp_max_show);
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rop_measured(cnt,:) = wh2.getStoValue('rop',v_bias_vals,awg_vpp_cur,eq_mode_show,precomp_amp_max_show);
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end
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[bestber,bestindex] = min(bers,[],'all');
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[awg_pos,v_bias_pos]=ind2sub(size(bers),bestindex);
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bestawgvpp=awg_vpp_vals(awg_pos);
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bestvbias=v_bias_vals(v_bias_pos);
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disp(['Best Vpp: ',num2str(bestvbias),' V; Best Vpp AWG: ',num2str(bestawgvpp),' V' ])
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% Compute the logarithm of BER data
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% Adding a small epsilon to avoid log(0)
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epsilon = 1e-12;
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log_bers = log10(bers + epsilon);
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% Set limits for z-data scaling in log scale
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zmin = log10(1e-4 + epsilon);
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zmax = log10(0.5 + epsilon);
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% Plot the filled contour plot with log-scaled z-data
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contourf_handle = contourf(v_bias_vals, awg_vpp_vals, log_bers, 'Parent', subplot1, "ShowText",true,"LabelFormat", @mylabelfun);
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% Set x and y labels with subscripts for clarity
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xlabel('V_{bias}');
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ylabel('V_{pp} AWG');
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title(['Prec. Ampl.: ',num2str(precomp_amp_max_show), 'dB']);
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% Adjust the grid to display white lines
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grid on;
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set(subplot1, 'GridColor', [1 1 1]); % Set grid color to white
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% Set limits for z-data scaling
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clim([zmin zmax]);
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% Adjust the colormap
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colormap(flipud(cbrewer2('RdBu',64)));
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% Add a colorbar and adjust its ticks to represent actual BER values
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c = colorbar;
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% Set colorbar ticks at log-spaced intervals
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tick_values = [1e-4 1e-3 1e-2 1e-1 0.5];
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tick_positions = log10(tick_values + epsilon);
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set(c, 'Ticks', tick_positions, 'TickLabels', arrayfun(@num2str, tick_values, 'UniformOutput', false));
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% Store variables in the figure's application data for use in the data tip function
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setappdata(gcf, 'v_bias_vals', v_bias_vals);
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setappdata(gcf, 'awg_vpp_vals', awg_vpp_vals);
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setappdata(gcf, 'bers', bers);
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setappdata(gcf, 'power', rop_measured); % Store the Power data
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% Set up the data cursor mode to display custom data tips
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dcm_obj = datacursormode(gcf);
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set(dcm_obj, 'UpdateFcn', @customDataTip);
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hold on
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scatter(bestvbias,bestawgvpp,100,"red",'Marker','x','LineWidth',2);
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end
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function labels = mylabelfun(vals)
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lab = 10.^vals;
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labels = arrayfun(@(x) num2str(x, '%.1e'), lab, 'UniformOutput', false);
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end
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% Define the custom data tip function
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function txt = customDataTip(~, event_obj)
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% Retrieve stored variables
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v_bias_vals = getappdata(gcf, 'v_bias_vals');
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awg_vpp_vals = getappdata(gcf, 'awg_vpp_vals');
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bers = getappdata(gcf, 'bers');
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power = getappdata(gcf, 'power'); % Retrieve the Power data
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% Get the position of the data cursor
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pos = event_obj.Position;
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xdata = pos(1);
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ydata = pos(2);
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% Find the nearest indices in the data arrays
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[~, xInd] = min(abs(v_bias_vals - xdata));
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[~, yInd] = min(abs(awg_vpp_vals - ydata));
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% Get the corresponding BER and Power values
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berValue = bers(yInd, xInd);
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powerValue = power(yInd, xInd); % Get the Power value
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% Format the text for the data tip
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txt = {['V_{bias} = ', num2str(xdata)], ...
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['V_{pp} AWG = ', num2str(ydata)], ...
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['BER = ', num2str(berValue, '%.1e')], ...
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['Power = ', num2str(powerValue)]};
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end
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274
projects/Lab_2024/lab_baudrate_sweep.m
Normal file
274
projects/Lab_2024/lab_baudrate_sweep.m
Normal file
@@ -0,0 +1,274 @@
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folderpath = 'C:\Users\sioe\Nextcloud\Dokumente\02_Ablage_Office\Lab_Data_24\baudrate_sweep\';
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experiment_name = 'PAM4_10km_ffe_';
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ffe_only = 0;
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postfilter_approach = 0;
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db_channel_approach = 1;
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db_coding_approach = 0;
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db_precode = db_coding_approach || db_channel_approach;
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%%% SIR Sweep for MPI Experiment %%%
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params = struct;
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params.fsym = [56,68,80,92].*1e9;
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params.fsym = [92].*1e9;
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wh = DataStorage(params);
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wh.addStorage("ber");
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wh.addStorage("pd_in");
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wh.addStorage("rop");
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wh.addStorage("m");
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wh.addStorage("signals");
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precomp_path = "C:\Users\sioe\Documents\MATLAB\imdd_simulation\projects\standard_system\";
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precomp_fn = "lab_mpi_setup_2";
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precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
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precomp_amp_max = 2;
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M = 4;
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pn_key = 2;
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usemrds = 0;
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fdac = 92e9;
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awg_vpp = 0.15;
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fadc = 160e9;
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rrcalpha = 0.05;
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v_bias = 2.25;
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pd_in_set = 4;
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rop_atten = 0;
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disp(['Start Measurement of ',num2str(prod(wh.dim)),' loops...'])
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for fsym = wh.parameter.fsym.values
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loop_name = ['_fsym_',num2str(fsym)];
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%%%%% SET Voltages %%%%%%
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||||
dcs = DC_supply("active",[1,1],"voltage",[v_bias, 9]);
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dcs.set("voltage",[v_bias, 9]);
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%%%%% SET Attenuator %%%%%%
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||||
voa = OptAtten("active",[1,2,1,1],"value",[rop_atten,pd_in_set,0,0],"wavelength",[1310,1310,1310,1310]);
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voa.set('active',[1,2,1,1],'value',[rop_atten,pd_in_set,0,0]);
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% voa.readvals();
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%%%%% Construct AWG and Scope Modules %%%%%%
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||||
SCP = ScopeKeysight("model","DSAZ634A",'autoscale',1,"fadc",'GSa_160',"channel",[1,0],"recordLen",2000000,"removeDC",1);
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AWG = AwgKeysight("model","M8196A","fdac",fdac,"scaletodac",[1,1,1,1],"skews",[0,0,0,0],"voltages",[0,0,0,awg_vpp]);
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A2S = Awg2Scope(AWG,SCP,[0,0,0,1]);
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%%%%% Symbol Generation %%%%%%
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Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rrcalpha);
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|
||||
[Digi_sig,Symbols,Bits] = PAMsource("fsym",fsym,"M",M,"order",18,"useprbs",1,...
|
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"fs_out",fdac,"applyclipping",0,"clipfactor",1.7,...
|
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"applypulseform",0,"pulseformer",Pform,"randkey",pn_key,...
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||||
"db_precode",db_precode,...
|
||||
"mrds_code",usemrds,"mrds_blocklength",512,"db_encode",db_coding_approach).process();
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||||
%%%%% Precompensation Routine %%%%%%
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||||
if precomp_mode == 1 % measure channel
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||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
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||||
Digi_sig = freqresp.buildOFDM();
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elseif precomp_mode == 2 % apply precomp
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
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Digi_sig = freqresp.precomp(Digi_sig,'maxampdb',precomp_amp_max,'loadPath',precomp_path,'fileName',precomp_fn);
|
||||
end
|
||||
|
||||
%%%%% Resample to DAC rate %%%%%%
|
||||
Digi_sig = Digi_sig.resample("fs_out",AWG.fdac);
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||||
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||||
|
||||
%%%%% Plot and Save Routine 1 %%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
Digi_sig.spectrum("displayname","Normal Tx","fignum",10);
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||||
|
||||
save([folderpath,[experiment_name,'bits'],loop_name],"Bits");
|
||||
save([folderpath,[experiment_name,'symbols'],loop_name],"Symbols");
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
%%%%% AWG --> Scope %%%%%%
|
||||
[~,~,~,Scpe_sig] = A2S.process("signal4",Digi_sig);
|
||||
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
Scpe_sig.spectrum("displayname","Scope PSD","fignum",20);
|
||||
|
||||
Scpe_sig.plot("displayname","Scope raw signal","fignum",25);
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
|
||||
%%%%%% Sample to 2x fsym %%%%%%
|
||||
Scpe_sig = Scpe_sig.resample("fs_in",160e9,"fs_out",2*fsym);
|
||||
|
||||
%%%%% Precompensation Routine %%%%%%
|
||||
if precomp_mode == 1
|
||||
freqresp.estimate(Scpe_sig,"save",true,"savePath",precomp_path,"fileName",precomp_fn);
|
||||
freqresp.plot();
|
||||
end
|
||||
|
||||
%%%%%% Sync Rx signal with reference %%%%%%
|
||||
[Scpe_sig,S] = Scpe_sig.tsynch("reference",Symbols,"fs_ref",fsym);
|
||||
|
||||
%%%%%% SNR CHEAT - Avg. the measured signal occurences %%%%%%
|
||||
average_signals = 0;
|
||||
if average_signals
|
||||
scope_mean = zeros(size(S{1}.signal));
|
||||
for n=1:numel(S)
|
||||
scope_mean = scope_mean + S{n}.signal;
|
||||
end
|
||||
scope_mean = scope_mean ./ n;
|
||||
Scpe_sig.signal = scope_mean;
|
||||
end
|
||||
|
||||
%%%%% Plot and Save Routine 2 %%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
save([folderpath,experiment_name,'rx_signal',loop_name],"S");
|
||||
Scpe_sig.eye(fsym,M,"fignum",40,"displayname",' after Scope');
|
||||
|
||||
voa.readvals();
|
||||
rop = voa.power_state(1);
|
||||
pd_in = voa.power_state(2);
|
||||
|
||||
|
||||
%%%%% EQUALIZE %%%%%%
|
||||
Eq = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",50,"sps",2,"decide",0);
|
||||
Eq = VNLE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",[0.0004 0.0005 0.0006],"mu_tr",0,"order",[50,7,7],"sps",2,"decide",1);
|
||||
Eq = EQ("Ne",[50,7,7],"Nb",[0,0,0],"training_length",4096*2,"training_loops",5,"dd_loops",5,"K",2,"DCmu",0.05,"DDmu",[0.0004 0.0004 0.0004 0.0004 ],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);
|
||||
|
||||
if ffe_only %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber),'| ROP: ',num2str(rop),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
if 1
|
||||
figure(53);
|
||||
constellation = unique(Symbols.signal);
|
||||
received = NaN(numel(constellation),length(Symbols));
|
||||
for lvl = 1:numel(constellation)
|
||||
received(lvl,Symbols.signal==constellation(lvl)) = EQ_sig.signal(Symbols.signal==constellation(lvl));
|
||||
hold on
|
||||
histogram(received(lvl,:),1000,"EdgeAlpha",0);
|
||||
end
|
||||
end
|
||||
|
||||
elseif postfilter_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
Noi = EQ_sig-Symbols;
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber_ffe_only,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
nc = 2;
|
||||
burg_coeff = arburg(Noi.signal,nc);
|
||||
|
||||
EQ_sig = EQ_sig.filter(burg_coeff,1);
|
||||
|
||||
if 0
|
||||
Noi.spectrum('displayname','Noise PSD','fignum',123)
|
||||
[h,w] = freqz(1,burg_coeff,length(Noi),"whole",Noi.fs);
|
||||
h = h/max(abs(h));
|
||||
hold on
|
||||
w_ = (w - Noi.fs/2);
|
||||
plot(w_.*1e-9,20*log10(fftshift(h)),'DisplayName',['', num2str(nc), ' coefficients for burg alg.']);
|
||||
end
|
||||
|
||||
EQ_sig = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber_ffe_only),' -> PF -> MLSE: ',sprintf('%.1E',ber),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_channel_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Duobinary().encode(Symbols));
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp([' DB Precode -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_coding_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Symbols);
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
disp([' DB Precode -> DB Code -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
end
|
||||
|
||||
wh.addValueToStorage(ber,'ber',fsym);
|
||||
wh.addValueToStorage(rop,'rop',fsym);
|
||||
wh.addValueToStorage(pd_in,'pd_in',fsym);
|
||||
wh.addValueToStorage(Rx_bits,'signals',fsym);
|
||||
wh.addValueToStorage(M,'m',fsym);
|
||||
|
||||
showCurrentMeasurement('BER', ber, 'ROP', rop, 'PD in', pd_in, 'PAM',M, 'Vbias', v_bias, 'AWG Vpp', Awg_vpp);
|
||||
autoArrangeFigures(3,3,2);
|
||||
end
|
||||
|
||||
wh.save([folderpath,experiment_name,'_wh']);
|
||||
|
||||
cols = linspecer(8);
|
||||
|
||||
fsym_vals = wh.parameter.fsym.values;
|
||||
|
||||
bers = wh.getStoValue('ber',fsym_vals);
|
||||
rop_measured = wh.getStoValue('rop',fsym_vals);
|
||||
pd_in_measured = wh.getStoValue('pd_in',fsym_vals);
|
||||
|
||||
figure(90);
|
||||
hold on; % Retain the plot so new points can be added without complete redraw
|
||||
|
||||
% Plot the data and get the line handle
|
||||
hLine = plot(fsym_vals.*1e-9, bers, "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", experiment_name);
|
||||
|
||||
% Store pd_in_measured in the ZData property
|
||||
hLine.ZData = pd_in_measured;
|
||||
|
||||
% Customize the data tips
|
||||
% Set labels for existing data tip rows
|
||||
hLine.DataTipTemplate.DataTipRows(1).Label = 'Fsym';
|
||||
hLine.DataTipTemplate.DataTipRows(2).Label = 'BER';
|
||||
hLine.DataTipTemplate.DataTipRows(2).Format = '%.2e'; % Format BER as "3e-4"
|
||||
|
||||
|
||||
% Add a new data tip row for PDin
|
||||
pdinRow = dataTipTextRow('PDin', 'ZData');
|
||||
hLine.DataTipTemplate.DataTipRows(3) = pdinRow;
|
||||
|
||||
% Continue with the rest of your plot settings
|
||||
yline(3.8e-3, 'DisplayName', 'HD-FEC', 'LineStyle', '--', 'HandleVisibility', 'off');
|
||||
xlabel('Symbol Rate');
|
||||
ylabel('Bit Error Rate (BER)');
|
||||
title('Bit Error Rate vs. ROP');
|
||||
set(gca, 'yscale', 'log');
|
||||
set(gca, 'Box', 'on');
|
||||
grid on;
|
||||
grid minor;
|
||||
legend('Interpreter', 'none');
|
||||
|
||||
autoArrangeFigures(3,3,2)
|
||||
|
||||
269
projects/Lab_2024/lab_bias_sweep.m
Normal file
269
projects/Lab_2024/lab_bias_sweep.m
Normal file
@@ -0,0 +1,269 @@
|
||||
|
||||
folderpath = 'C:\Users\sioe\Nextcloud\Dokumente\02_Ablage_Office\Lab_Data_24\bias_sweep\';
|
||||
experiment_name = 'PAM4_DB_precoded_10km_ffe_';
|
||||
|
||||
% a = load([folderpath,experiment_name,'_wh']);
|
||||
% wh2 = a.obj;
|
||||
|
||||
|
||||
ffe_only = 0;
|
||||
postfilter_approach = 0;
|
||||
db_channel_approach = 1;
|
||||
db_coding_approach = 0;
|
||||
|
||||
db_precode = db_coding_approach || db_channel_approach;
|
||||
|
||||
%%% SIR Sweep for MPI Experiment %%%
|
||||
params = struct;
|
||||
|
||||
params.vbias = [2.1:0.05:2.4];
|
||||
params.awg_vpp = [0.15:0.05:0.6];
|
||||
|
||||
wh = DataStorage(params);
|
||||
|
||||
wh.addStorage("ber");
|
||||
wh.addStorage("pd_in");
|
||||
wh.addStorage("rop");
|
||||
wh.addStorage("m");
|
||||
wh.addStorage("signals");
|
||||
|
||||
precomp_path = "C:\Users\sioe\Documents\MATLAB\imdd_simulation\projects\standard_system\";
|
||||
precomp_fn = "lab_mpi_setup_2";
|
||||
precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
|
||||
precomp_amp_max = -2;
|
||||
|
||||
M = 4;
|
||||
pn_key = 2;
|
||||
usemrds = 0;
|
||||
fsym = 92e9;
|
||||
fdac = 92e9;
|
||||
Awg_vpp = 0.35;
|
||||
fadc = 160e9;
|
||||
rrcalpha = 0.05;
|
||||
v_bias = 2.25;
|
||||
pd_in_set = 6;
|
||||
rop_atten = 0;
|
||||
|
||||
looptatal = prod(wh.dim);
|
||||
disp(['Start Measurement of ',num2str(looptatal),' loops...'])
|
||||
hWaitbar = waitbar(0, 'Starting measurement...', 'Name', 'Processing Progress');
|
||||
loopcnt = 0;
|
||||
|
||||
for v_bias = wh.parameter.vbias.values
|
||||
for awg_vpp = wh.parameter.awg_vpp.values
|
||||
|
||||
loopcnt = loopcnt+1;
|
||||
progressFraction = loopcnt / looptatal;
|
||||
waitbar(progressFraction, hWaitbar, ...
|
||||
sprintf('Progress: %d/%d', loopcnt, looptatal));
|
||||
|
||||
try
|
||||
a
|
||||
% ber = wh2.getStoValue('ber', v_bias,awg_vpp);
|
||||
% rop = wh2.getStoValue('rop', v_bias,awg_vpp);
|
||||
% pd_in = wh2.getStoValue('pd_in', v_bias,awg_vpp);
|
||||
% Rx_bits = wh2.getStoValue('signals', v_bias,awg_vpp);
|
||||
% Rx_bits = Rx_bits{1};
|
||||
% M = wh2.getStoValue('m', v_bias,awg_vpp);
|
||||
|
||||
|
||||
catch
|
||||
|
||||
loop_name = ['_fsym_',num2str(fsym)];
|
||||
|
||||
%%%%% SET Voltages %%%%%%
|
||||
dcs = DC_supply("active",[1,1],"voltage",[v_bias, 9]);
|
||||
dcs.set("voltage",[v_bias, 9]);
|
||||
|
||||
%%%%% SET Attenuator %%%%%%
|
||||
voa = OptAtten("active",[1,2,1,1],"value",[rop_atten,pd_in_set,0,0],"wavelength",[1310,1310,1310,1310]);
|
||||
voa.set('active',[1,2,1,1],'value',[rop_atten,pd_in_set,0,0]);
|
||||
% voa.readvals();
|
||||
|
||||
%%%%% Construct AWG and Scope Modules %%%%%%
|
||||
SCP = ScopeKeysight("model","DSAZ634A",'autoscale',1,"fadc",'GSa_160',"channel",[1,0],"recordLen",1000000,"removeDC",1);
|
||||
AWG = AwgKeysight("model","M8196A","fdac",fdac,"scaletodac",[1,1,1,1],"skews",[0,0,0,0],"voltages",[0,0,0,awg_vpp]);
|
||||
A2S = Awg2Scope(AWG,SCP,[0,0,0,1]);
|
||||
|
||||
|
||||
%%%%% Symbol Generation %%%%%%
|
||||
Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rrcalpha);
|
||||
|
||||
[Digi_sig,Symbols,Bits] = PAMsource("fsym",fsym,"M",M,"order",18,"useprbs",1,...
|
||||
"fs_out",fdac,"applyclipping",0,"clipfactor",1.7,...
|
||||
"applypulseform",0,"pulseformer",Pform,"randkey",pn_key,...
|
||||
"db_precode",db_precode,...
|
||||
"mrds_code",usemrds,"mrds_blocklength",512,"db_encode",db_coding_approach).process();
|
||||
|
||||
%%%%% Precompensation Routine %%%%%%
|
||||
if precomp_mode == 1 % measure channel
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
|
||||
Digi_sig = freqresp.buildOFDM();
|
||||
elseif precomp_mode == 2 % apply precomp
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
|
||||
Digi_sig = freqresp.precomp(Digi_sig,'maxampdb',precomp_amp_max,'loadPath',precomp_path,'fileName',precomp_fn);
|
||||
end
|
||||
|
||||
%%%%% Resample to DAC rate %%%%%%
|
||||
Digi_sig = Digi_sig.resample("fs_out",AWG.fdac);
|
||||
|
||||
|
||||
%%%%% Plot and Save Routine 1 %%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
% Digi_sig.spectrum("displayname","Normal Tx","fignum",10);
|
||||
|
||||
% save([folderpath,[experiment_name,'bits'],loop_name],"Bits");
|
||||
% save([folderpath,[experiment_name,'symbols'],loop_name],"Symbols");
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
%%%%% AWG --> Scope %%%%%%
|
||||
[~,~,~,Scpe_sig] = A2S.process("signal4",Digi_sig);
|
||||
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
% Scpe_sig.spectrum("displayname","Scope PSD","fignum",20);
|
||||
|
||||
% Scpe_sig.plot("displayname","Scope raw signal","fignum",25);
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
|
||||
%%%%%% Sample to 2x fsym %%%%%%
|
||||
Scpe_sig = Scpe_sig.resample("fs_in",160e9,"fs_out",2*fsym);
|
||||
|
||||
%%%%% Precompensation Routine %%%%%%
|
||||
if precomp_mode == 1
|
||||
freqresp.estimate(Scpe_sig,"save",true,"savePath",precomp_path,"fileName",precomp_fn);
|
||||
freqresp.plot();
|
||||
end
|
||||
|
||||
%%%%%% Sync Rx signal with reference %%%%%%
|
||||
[Scpe_sig,S] = Scpe_sig.tsynch("reference",Symbols,"fs_ref",fsym);
|
||||
|
||||
%%%%%% SNR CHEAT - Avg. the measured signal occurences %%%%%%
|
||||
average_signals = 0;
|
||||
if average_signals
|
||||
scope_mean = zeros(size(S{1}.signal));
|
||||
for n=1:numel(S)
|
||||
scope_mean = scope_mean + S{n}.signal;
|
||||
end
|
||||
scope_mean = scope_mean ./ n;
|
||||
Scpe_sig.signal = scope_mean;
|
||||
end
|
||||
|
||||
%%%%% Plot and Save Routine 2 %%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
save([folderpath,experiment_name,'rx_signal',loop_name],"S");
|
||||
Scpe_sig.eye(fsym,M,"fignum",40,"displayname",' after Scope');
|
||||
|
||||
voa.readvals();
|
||||
rop = voa.power_state(1);
|
||||
pd_in = voa.power_state(2);
|
||||
|
||||
|
||||
%%%%% EQUALIZE %%%%%%
|
||||
Eq = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",50,"sps",2,"decide",0);
|
||||
Eq = VNLE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",[0.0004 0.0005 0.0006],"mu_tr",0,"order",[50,7,7],"sps",2,"decide",1);
|
||||
Eq = EQ("Ne",[50,7,7],"Nb",[0,0,0],"training_length",4096*2,"training_loops",5,"dd_loops",5,"K",2,"DCmu",0.05,"DDmu",[0.0004 0.0004 0.0004 0.0004 ],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);
|
||||
|
||||
if ffe_only %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber),'| ROP: ',num2str(rop),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
if 1
|
||||
figure(53);
|
||||
constellation = unique(Symbols.signal);
|
||||
received = NaN(numel(constellation),length(Symbols));
|
||||
for lvl = 1:numel(constellation)
|
||||
received(lvl,Symbols.signal==constellation(lvl)) = EQ_sig.signal(Symbols.signal==constellation(lvl));
|
||||
hold on
|
||||
histogram(received(lvl,:),1000,"EdgeAlpha",0);
|
||||
end
|
||||
end
|
||||
|
||||
elseif postfilter_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
Noi = EQ_sig-Symbols;
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber_ffe_only,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
nc = 2;
|
||||
burg_coeff = arburg(Noi.signal,nc);
|
||||
|
||||
EQ_sig = EQ_sig.filter(burg_coeff,1);
|
||||
|
||||
if 0
|
||||
Noi.spectrum('displayname','Noise PSD','fignum',123)
|
||||
[h,w] = freqz(1,burg_coeff,length(Noi),"whole",Noi.fs);
|
||||
h = h/max(abs(h));
|
||||
hold on
|
||||
w_ = (w - Noi.fs/2);
|
||||
plot(w_.*1e-9,20*log10(fftshift(h)),'DisplayName',['', num2str(nc), ' coefficients for burg alg.']);
|
||||
end
|
||||
|
||||
EQ_sig = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber_ffe_only),' -> PF -> MLSE: ',sprintf('%.1E',ber),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_channel_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Duobinary().encode(Symbols));
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp([' DB Precode -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_coding_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Symbols);
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
disp([' DB Precode -> DB Code -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
end
|
||||
|
||||
end
|
||||
|
||||
wh.addValueToStorage(ber,'ber',v_bias,awg_vpp);
|
||||
wh.addValueToStorage(rop,'rop',v_bias,awg_vpp);
|
||||
wh.addValueToStorage(pd_in,'pd_in',v_bias,awg_vpp);
|
||||
wh.addValueToStorage(Rx_bits,'signals',v_bias,awg_vpp);
|
||||
wh.addValueToStorage(M,'m',v_bias,awg_vpp);
|
||||
|
||||
showCurrentMeasurement('BER', ber, 'ROP', rop, 'PD in', pd_in, 'PAM',M, 'Vbias', v_bias, 'AWG Vpp', awg_vpp, 'Precomp MaxAmp',precomp_amp_max);
|
||||
autoArrangeFigures(3,3,2);
|
||||
|
||||
|
||||
end
|
||||
end
|
||||
|
||||
close(hWaitbar);
|
||||
|
||||
wh.save([folderpath,experiment_name,'_wh']);
|
||||
|
||||
autoArrangeFigures(3,3,2)
|
||||
|
||||
320
projects/Lab_2024/lab_bias_sweep_gigantisch.m
Normal file
320
projects/Lab_2024/lab_bias_sweep_gigantisch.m
Normal file
@@ -0,0 +1,320 @@
|
||||
|
||||
folderpath = 'C:\Users\sioe\Nextcloud\Dokumente\02_Ablage_Office\Lab_Data_24\bias_sweep_4db_pdin\';
|
||||
experiment_name = 'PAM6_alles_10km_ffe_';
|
||||
|
||||
wh2 = obj;
|
||||
|
||||
ffe_only = 0;
|
||||
postfilter_approach = 0;
|
||||
db_channel_approach = 1;
|
||||
db_coding_approach = 0;
|
||||
|
||||
db_precode = db_coding_approach || db_channel_approach;
|
||||
|
||||
%%% SIR Sweep for MPI Experiment %%%
|
||||
params = struct;
|
||||
|
||||
params.vbias = [2.2:0.05:2.5];
|
||||
params.awg_vpp = [0.15:0.05:0.6];
|
||||
params.eq_mode = [1];
|
||||
params.precomp_amp_max = [0:2:5];
|
||||
|
||||
|
||||
wh = DataStorage(params);
|
||||
|
||||
wh.addStorage("ber");
|
||||
wh.addStorage("pd_in");
|
||||
wh.addStorage("rop");
|
||||
wh.addStorage("m");
|
||||
wh.addStorage("signals");
|
||||
|
||||
precomp_path = "C:\Users\sioe\Documents\MATLAB\imdd_simulation\projects\standard_system\";
|
||||
precomp_fn = "lab_mpi_setup_2";
|
||||
precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
|
||||
precomp_amp_max = -2;
|
||||
|
||||
M = 6;
|
||||
pn_key = 2;
|
||||
usemrds = 0;
|
||||
fsym = 70e9;
|
||||
fdac = 92e9;
|
||||
awg_vpp = 0.35;
|
||||
fadc = 160e9;
|
||||
rrcalpha = 0.05;
|
||||
v_bias = 2.25;
|
||||
pd_in_set = 4;
|
||||
rop_atten = 0;
|
||||
|
||||
looptatal = prod(wh.dim);
|
||||
iterationTimes = zeros(looptatal, 1); % Preallocate for speed
|
||||
|
||||
disp(['Start Measurement of ',num2str(looptatal),' loops...'])
|
||||
hWaitbar = waitbar(0, 'Starting measurement...', 'Name', 'Processing Progress');
|
||||
loopcnt = 0;
|
||||
|
||||
estimatedTimeRemaining = 0;
|
||||
estimatedTotalTime = 0;
|
||||
for eq_mode = wh.parameter.eq_mode.values
|
||||
for precomp_amp_max = wh.parameter.precomp_amp_max.values
|
||||
for v_bias = wh.parameter.vbias.values
|
||||
for awg_vpp = wh.parameter.awg_vpp.values
|
||||
|
||||
iterationStartTime = tic;
|
||||
experiment_name = ['PAM6_alles_10km_eq',num2str(eq_mode),'maxamp',num2str(precomp_amp_max),'vbias',num2str(v_bias),'awgvpp',num2str(awg_vpp)];
|
||||
experiment_name = strrep(experiment_name,'.','_');
|
||||
|
||||
loopcnt = loopcnt+1;
|
||||
progressFraction = loopcnt / looptatal;
|
||||
waitbar(progressFraction, hWaitbar, ...
|
||||
sprintf('Progress: %d/%d\nEstimated time remaining: %.2f hours\nEstimated time remaining: %.2f hours', ...
|
||||
loopcnt, looptatal, estimatedTimeRemaining/60/60, estimatedTotalTime/60/60));
|
||||
|
||||
|
||||
loop_name = ['_fsym_',num2str(fsym)];
|
||||
|
||||
try
|
||||
|
||||
a
|
||||
ber = wh2.getStoValue('ber',v_bias,awg_vpp,eq_mode,precomp_amp_max);
|
||||
assert(~isempty(ber),'err')
|
||||
rop = wh2.getStoValue('rop',v_bias,awg_vpp,eq_mode,precomp_amp_max);
|
||||
assert(~isempty(rop))
|
||||
pd_in = wh2.getStoValue('pd_in',v_bias,awg_vpp,eq_mode,precomp_amp_max);
|
||||
assert(~isempty(pd_in))
|
||||
M = wh2.getStoValue('m',v_bias,awg_vpp,eq_mode,precomp_amp_max);
|
||||
assert(~isempty(M))
|
||||
|
||||
catch
|
||||
|
||||
|
||||
|
||||
|
||||
switch eq_mode
|
||||
|
||||
case 2
|
||||
ffe_only = 0;
|
||||
postfilter_approach = 1;
|
||||
db_channel_approach = 0;
|
||||
db_coding_approach = 0;
|
||||
|
||||
db_precode = db_coding_approach || db_channel_approach;
|
||||
case 3
|
||||
ffe_only = 0;
|
||||
postfilter_approach = 0;
|
||||
db_channel_approach = 1;
|
||||
db_coding_approach = 0;
|
||||
|
||||
db_precode = db_coding_approach || db_channel_approach;
|
||||
case 4
|
||||
ffe_only = 0;
|
||||
postfilter_approach = 0;
|
||||
db_channel_approach = 0;
|
||||
db_coding_approach = 1;
|
||||
|
||||
db_precode = db_coding_approach || db_channel_approach;
|
||||
end
|
||||
|
||||
|
||||
|
||||
%%%%% SET Voltages %%%%%%
|
||||
dcs = DC_supply("active",[1,1],"voltage",[v_bias, 9]);
|
||||
dcs.set("voltage",[v_bias, 9]);
|
||||
|
||||
%%%%% SET Attenuator %%%%%%
|
||||
voa = OptAtten("active",[1,2,1,1],"value",[rop_atten,pd_in_set,0,0],"wavelength",[1310,1310,1310,1310]);
|
||||
voa.set('active',[1,2,1,1],'value',[rop_atten,pd_in_set,0,0]);
|
||||
% voa.readvals();
|
||||
|
||||
%%%%% Construct AWG and Scope Modules %%%%%%
|
||||
SCP = ScopeKeysight("model","DSAZ634A",'autoscale',1,"fadc",'GSa_160',"channel",[1,0],"recordLen",1000000,"removeDC",1);
|
||||
AWG = AwgKeysight("model","M8196A","fdac",fdac,"scaletodac",[1,1,1,1],"skews",[0,0,0,0],"voltages",[0,0,0,awg_vpp]);
|
||||
A2S = Awg2Scope(AWG,SCP,[0,0,0,1]);
|
||||
|
||||
%%%%% Symbol Generation %%%%%%
|
||||
Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rrcalpha);
|
||||
|
||||
[Digi_sig,Symbols,Bits] = PAMsource("fsym",fsym,"M",M,"order",18,"useprbs",1,...
|
||||
"fs_out",fdac,"applyclipping",0,"clipfactor",1.7,...
|
||||
"applypulseform",0,"pulseformer",Pform,"randkey",pn_key,...
|
||||
"db_precode",db_precode,...
|
||||
"mrds_code",usemrds,"mrds_blocklength",512,"db_encode",db_coding_approach).process();
|
||||
|
||||
%%%%% Precompensation Routine %%%%%%
|
||||
if precomp_mode == 1 % measure channel
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
|
||||
Digi_sig = freqresp.buildOFDM();
|
||||
elseif precomp_mode == 2 % apply precomp
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
|
||||
Digi_sig = freqresp.precomp(Digi_sig,'maxampdb',precomp_amp_max,'loadPath',precomp_path,'fileName',precomp_fn);
|
||||
end
|
||||
|
||||
%%%%% Resample to DAC rate %%%%%%
|
||||
Digi_sig = Digi_sig.resample("fs_out",AWG.fdac);
|
||||
|
||||
|
||||
%%%%% Plot and Save Routine 1 %%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
% Digi_sig.spectrum("displayname","Normal Tx","fignum",10);
|
||||
|
||||
% save([folderpath,[experiment_name,'bits'],loop_name],"Bits");
|
||||
% save([folderpath,[experiment_name,'symbols'],loop_name],"Symbols");
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
%%%%% AWG --> Scope %%%%%%
|
||||
[~,~,~,Scpe_sig] = A2S.process("signal4",Digi_sig);
|
||||
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
% Scpe_sig.spectrum("displayname","Scope PSD","fignum",20);
|
||||
|
||||
% Scpe_sig.plot("displayname","Scope raw signal","fignum",25);
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
|
||||
%%%%%% Sample to 2x fsym %%%%%%
|
||||
Scpe_sig = Scpe_sig.resample("fs_in",160e9,"fs_out",2*fsym);
|
||||
|
||||
%%%%% Precompensation Routine %%%%%%
|
||||
if precomp_mode == 1
|
||||
freqresp.estimate(Scpe_sig,"save",true,"savePath",precomp_path,"fileName",precomp_fn);
|
||||
freqresp.plot();
|
||||
end
|
||||
|
||||
%%%%%% Sync Rx signal with reference %%%%%%
|
||||
[Scpe_sig,S] = Scpe_sig.tsynch("reference",Symbols,"fs_ref",fsym);
|
||||
|
||||
%%%%%% SNR CHEAT - Avg. the measured signal occurences %%%%%%
|
||||
average_signals = 0;
|
||||
if average_signals
|
||||
scope_mean = zeros(size(S{1}.signal));
|
||||
for n=1:numel(S)
|
||||
scope_mean = scope_mean + S{n}.signal;
|
||||
end
|
||||
scope_mean = scope_mean ./ n;
|
||||
Scpe_sig.signal = scope_mean;
|
||||
end
|
||||
|
||||
%%%%% Plot and Save Routine 2 %%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
save([folderpath,experiment_name,'rx_signal',loop_name],"S");
|
||||
% Scpe_sig.eye(fsym,M,"fignum",40,"displayname",' after Scope');
|
||||
|
||||
voa.readvals();
|
||||
rop = voa.power_state(1);
|
||||
pd_in = voa.power_state(2);
|
||||
|
||||
|
||||
%%%%% EQUALIZE %%%%%%
|
||||
Eq = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",50,"sps",2,"decide",0);
|
||||
Eq = VNLE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",[0.0004 0.0005 0.0006],"mu_tr",0,"order",[50,7,7],"sps",2,"decide",1);
|
||||
Eq = EQ("Ne",[50,7,7],"Nb",[0,0,0],"training_length",4096*2,"training_loops",5,"dd_loops",5,"K",2,"DCmu",0.05,"DDmu",[0.0004 0.0004 0.0004 0.0004 ],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);
|
||||
|
||||
if ffe_only %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
% EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber),'| ROP: ',num2str(rop),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
if 0
|
||||
figure(53);
|
||||
constellation = unique(Symbols.signal);
|
||||
received = NaN(numel(constellation),length(Symbols));
|
||||
for lvl = 1:numel(constellation)
|
||||
received(lvl,Symbols.signal==constellation(lvl)) = EQ_sig.signal(Symbols.signal==constellation(lvl));
|
||||
hold on
|
||||
histogram(received(lvl,:),1000,"EdgeAlpha",0);
|
||||
end
|
||||
end
|
||||
|
||||
elseif postfilter_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
% EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
Noi = EQ_sig-Symbols;
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber_ffe_only,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
nc = 2;
|
||||
burg_coeff = arburg(Noi.signal,nc);
|
||||
|
||||
EQ_sig = EQ_sig.filter(burg_coeff,1);
|
||||
|
||||
if 0
|
||||
Noi.spectrum('displayname','Noise PSD','fignum',123)
|
||||
[h,w] = freqz(1,burg_coeff,length(Noi),"whole",Noi.fs);
|
||||
h = h/max(abs(h));
|
||||
hold on
|
||||
w_ = (w - Noi.fs/2);
|
||||
plot(w_.*1e-9,20*log10(fftshift(h)),'DisplayName',['', num2str(nc), ' coefficients for burg alg.']);
|
||||
end
|
||||
|
||||
EQ_sig = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber_ffe_only),' -> PF -> MLSE: ',sprintf('%.1E',ber),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_channel_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Duobinary().encode(Symbols));
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp([' DB Precode -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_coding_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Symbols);
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
% EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
disp([' DB Precode -> DB Code -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
end
|
||||
|
||||
end
|
||||
|
||||
wh.addValueToStorage(ber,'ber',v_bias,awg_vpp,eq_mode,precomp_amp_max);
|
||||
wh.addValueToStorage(rop,'rop',v_bias,awg_vpp,eq_mode,precomp_amp_max);
|
||||
wh.addValueToStorage(pd_in,'pd_in',v_bias,awg_vpp,eq_mode,precomp_amp_max);
|
||||
%wh.addValueToStorage(Rx_bits,'signals',v_bias,awg_vpp);
|
||||
wh.addValueToStorage(M,'m',v_bias,awg_vpp,eq_mode,precomp_amp_max);
|
||||
|
||||
showCurrentMeasurement('BER', ber, 'ROP', rop, 'PD in', pd_in, 'PAM',M, 'Vbias', v_bias, 'AWG Vpp', awg_vpp, 'Precomp MaxAmp',precomp_amp_max);
|
||||
|
||||
iterationTimes(loopcnt) = toc(iterationStartTime);
|
||||
averageTimePerIteration = mean(iterationTimes(1:loopcnt));
|
||||
estimatedTotalTime = averageTimePerIteration * looptatal;
|
||||
estimatedTimeRemaining = estimatedTotalTime - sum(iterationTimes(1:loopcnt));
|
||||
%autoArrangeFigures(3,3,2);
|
||||
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
close(hWaitbar);
|
||||
|
||||
wh.save([folderpath,experiment_name,'wh']);
|
||||
|
||||
autoArrangeFigures(3,3,2)
|
||||
|
||||
disp("measurement done")
|
||||
246
projects/Lab_2024/lab_db_precode.m
Normal file
246
projects/Lab_2024/lab_db_precode.m
Normal file
@@ -0,0 +1,246 @@
|
||||
|
||||
folderpath = 'C:\Users\sioe\Nextcloud\Dokumente\02_Ablage_Office\Lab_Data_24\no_mpi_2024\';
|
||||
experiment_name = '10km_ffe_no_mpi_';
|
||||
|
||||
only_dsp = 0;
|
||||
|
||||
ffe_only = 1;
|
||||
postfilter_approach = 0;
|
||||
db_channel_approach = 0;
|
||||
db_coding_approach = 0;
|
||||
|
||||
db_precode = db_coding_approach || db_channel_approach;
|
||||
|
||||
%%% SIR Sweep for MPI Experiment %%%
|
||||
params = struct;
|
||||
params.i_atten = [40];
|
||||
|
||||
wh = DataStorage(params);
|
||||
|
||||
wh.addStorage("ber");
|
||||
wh.addStorage("sir");
|
||||
wh.addStorage("pd_in");
|
||||
wh.addStorage("signals");
|
||||
|
||||
precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
|
||||
precomp_amp_max = 3;
|
||||
|
||||
M = 6;
|
||||
pn_key = 2;
|
||||
usemrds = 0;
|
||||
fdac = 92e9;
|
||||
fsym = 56e9;
|
||||
fadc = 160e9;
|
||||
rrcalpha = 0.05;
|
||||
v_bias = 2.25;
|
||||
i_atten = params.i_atten(1);
|
||||
pd_in_desired = 6;
|
||||
|
||||
|
||||
disp(['Start Measurement of ',num2str(prod(wh.dim)),' loops...'])
|
||||
|
||||
for i = 1
|
||||
|
||||
%%%%% SET Volatges %%%%%%
|
||||
dcs = DC_supply("active",[1,1],"voltage",[v_bias, 9]);
|
||||
dcs.set("voltage",[v_bias, 9]);
|
||||
|
||||
voa = OptAtten("active",[1,2,1,1],"value",[0,pd_in_desired,0,i_atten],"wavelength",[1310,1310,1310,1310]);
|
||||
%voa.set('active',[1,2,1,1],'value',[0,pd_in_desired,0,i_atten]);
|
||||
% voa.readvals();
|
||||
|
||||
SCP = ScopeKeysight("model","DSAZ634A",'autoscale',1,"fadc",'GSa_160',"channel",[1,0],"recordLen",2000000,"removeDC",1);
|
||||
AWG = AwgKeysight("model","M8196A","fdac",fdac,"scaletodac",[1,1,1,1],"skews",[0,0,0,0],"voltages",[0,0,0,0.62]);
|
||||
A2S = Awg2Scope(AWG,SCP,[0,0,0,1]);
|
||||
|
||||
|
||||
if 1
|
||||
precomp_path = "C:\Users\sioe\Documents\MATLAB\imdd_simulation\projects\standard_system\";
|
||||
precomp_fn = "lab_mpi_setup_2";
|
||||
else
|
||||
precomp_path = "C:\Users\sioe\Documents\MATLAB\model-collection\sioe_models\Labor_2024\Lab_PAM4\";
|
||||
precomp_fn = "precomp_bla__loop1_1";
|
||||
end
|
||||
|
||||
|
||||
%%%%% Symbol Generation %%%%%%
|
||||
Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rrcalpha);
|
||||
|
||||
[Digi_sig,Symbols,Bits] = PAMsource("fsym",fsym,"M",M,"order",18,"useprbs",1,...
|
||||
"fs_out",fdac,"applyclipping",0,"clipfactor",1.7,...
|
||||
"applypulseform",0,"pulseformer",Pform,"randkey",pn_key,...
|
||||
"db_precode",db_precode,...
|
||||
"mrds_code",usemrds,"mrds_blocklength",512,"db_encode",db_coding_approach).process();
|
||||
|
||||
if precomp_mode == 1 % measure channel
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
|
||||
Digi_sig = freqresp.buildOFDM();
|
||||
elseif precomp_mode == 2 % apply precomp
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
|
||||
Digi_sig = freqresp.precomp(Digi_sig,'maxampdb',precomp_amp_max,'loadPath',precomp_path,'fileName',precomp_fn);
|
||||
end
|
||||
|
||||
Digi_sig = Digi_sig.resample("fs_out",AWG.fdac);
|
||||
|
||||
Digi_sig.spectrum("displayname","Normal Tx","fignum",10);
|
||||
|
||||
|
||||
save([folderpath,[experiment_name,'bits']],"Bits");
|
||||
save([folderpath,[experiment_name,'symbols']],"Symbols");
|
||||
|
||||
|
||||
for i_atten = wh.parameter.i_atten.values
|
||||
|
||||
%%%%% SET ATTENUATOR %%%%%%
|
||||
voa.set('active',[1,2,1,1],'value',[0,7,0,i_atten]);
|
||||
|
||||
%%%%% AWG --> Scope %%%%%%
|
||||
[~,~,~,Scpe_sig] = A2S.process("signal4",Digi_sig);
|
||||
|
||||
Scpe_sig.spectrum("displayname","Scope PSD","fignum",20);
|
||||
|
||||
|
||||
|
||||
% Scpe_sig.spectrum("displayname",'Rx Signal','fignum',10);
|
||||
|
||||
%%%%%% Sample to 2x fsym %%%%%%
|
||||
Scpe_sig = Scpe_sig.resample("fs_in",160e9,"fs_out",2*fsym);
|
||||
|
||||
if precomp_mode == 1
|
||||
freqresp.estimate(Scpe_sig,"save",true,"savePath",precomp_path,"fileName",precomp_fn);
|
||||
freqresp.plot();
|
||||
end
|
||||
|
||||
%%%%%% Sync Rx signal with reference %%%%%%
|
||||
[Scpe_sig,S] = Scpe_sig.tsynch("reference",Symbols,"fs_ref",fsym);
|
||||
save([folderpath,experiment_name,'rx_signal_iatten_',num2str(i_atten),''],"S");
|
||||
|
||||
average_signals = 0;
|
||||
if average_signals
|
||||
scope_mean = zeros(size(S{1}.signal));
|
||||
for n=1:numel(S)
|
||||
scope_mean = scope_mean + S{n}.signal;
|
||||
end
|
||||
scope_mean = scope_mean ./ n;
|
||||
Scpe_sig.signal = scope_mean;
|
||||
end
|
||||
|
||||
Scpe_sig.plot("displayname","Scope PSD","fignum",30);
|
||||
Scpe_sig.eye(fsym,M,"fignum",40,"displayname",' after Scope');
|
||||
|
||||
sir = voa.power_state(3)-voa.power_state(4);
|
||||
pd_in = voa.power_state(2);
|
||||
|
||||
|
||||
%%%%% EQUALIZE %%%%%%
|
||||
Eq = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",50,"sps",2,"decide",0);
|
||||
Eq = VNLE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",[0.0004 0.0005 0.0006],"mu_tr",0,"order",[50,7,7],"sps",2,"decide",1);
|
||||
Eq = EQ("Ne",[50,7,7],"Nb",[0,0,0],"training_length",4096*2,"training_loops",5,"dd_loops",5,"K",2,"DCmu",0.0,"DDmu",[0.0004 0.0004 0.0004 0.0004 ],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);
|
||||
|
||||
if ffe_only %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber),'| SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif postfilter_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
Noi = EQ_sig-Symbols;
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber_ffe_only,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
nc = 2;
|
||||
burg_coeff = arburg(Noi.signal,nc);
|
||||
|
||||
EQ_sig = EQ_sig.filter(burg_coeff,1);
|
||||
|
||||
if 0
|
||||
Noi.spectrum('displayname','Noise PSD','fignum',123)
|
||||
[h,w] = freqz(1,burg_coeff,length(Noi),"whole",Noi.fs);
|
||||
h = h/max(abs(h));
|
||||
hold on
|
||||
w_ = (w - Noi.fs/2);
|
||||
plot(w_.*1e-9,20*log10(fftshift(h)),'DisplayName',['', num2str(nc), ' coefficients for burg alg.']);
|
||||
end
|
||||
|
||||
EQ_sig = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber_ffe_only),' -> PF -> MLSE: ',sprintf('%.1E',ber),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_channel_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Duobinary().encode(Symbols));
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp([' DB Precode -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_coding_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Symbols);
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
disp([' DB Precode -> DB Code -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
end
|
||||
|
||||
|
||||
|
||||
wh.addValueToStorage(ber,'ber',i_atten);
|
||||
wh.addValueToStorage(sir,'sir',i_atten);
|
||||
wh.addValueToStorage(pd_in,'pd_in',i_atten);
|
||||
wh.addValueToStorage(Rx_bits,'signals',i_atten);
|
||||
|
||||
end
|
||||
end
|
||||
|
||||
wh.save([folderpath,experiment_name,'_wh']);
|
||||
|
||||
cols = linspecer(8);
|
||||
|
||||
sir_vals = wh.parameter.i_atten.values;
|
||||
bers = wh.getStoValue('ber',sir_vals);
|
||||
|
||||
figure(90);
|
||||
a = gca;
|
||||
hold on; % Retain the plot so new points can be added without complete redraw
|
||||
|
||||
plot(sir_vals,bers,"LineWidth",0.5,"LineStyle","-","Marker",".","MarkerSize",15,"DisplayName",[experiment_name]);
|
||||
yline(3.8e-3,'DisplayName','HD-FEC','LineStyle','--','HandleVisibility','off');
|
||||
xlabel('Received Optical Power (dBm)');
|
||||
ylabel('Bit Error Rate (BER)');
|
||||
title('Bit Error Rate vs. ROP');
|
||||
set(gca,'yscale','log');
|
||||
set(gca,'Box','on');
|
||||
grid on;
|
||||
grid minor
|
||||
legend('Interpreter','none')
|
||||
|
||||
autoArrangeFigures(2,3,2)
|
||||
|
||||
@@ -1,14 +1,18 @@
|
||||
|
||||
|
||||
folderpath = 'C:\Users\sioe\Nextcloud\Dokumente\02_Ablage_Office\Lab_Data_24\mpi_ofc_2024\';
|
||||
|
||||
%%% SIR Sweep for MPI Experiment %%%
|
||||
params = struct;
|
||||
params.i_atten = 10;
|
||||
params.i_atten = [40];
|
||||
|
||||
wh = DataStorage(params);
|
||||
|
||||
wh.addStorage("ber");
|
||||
wh.addStorage("ber_pf");
|
||||
wh.addStorage("sir");
|
||||
wh.addStorage("pd_in");
|
||||
|
||||
playandrecord = 0;
|
||||
wh.addStorage("signals");
|
||||
|
||||
precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
|
||||
M = 4;
|
||||
@@ -18,8 +22,8 @@ fdac = 92e9;
|
||||
fsym = 92e9;
|
||||
fadc = 160e9;
|
||||
rrcalpha = 0.05;
|
||||
v_bias = 2.27;
|
||||
i_atten = 40;
|
||||
v_bias = 2.25;
|
||||
i_atten = params.i_atten(1);
|
||||
pd_in_desired = 7;
|
||||
|
||||
disp(['Start Measurement of ',num2str(prod(wh.dim)),' loops...'])
|
||||
@@ -28,10 +32,13 @@ disp(['Start Measurement of ',num2str(prod(wh.dim)),' loops...'])
|
||||
dcs = DC_supply("active",[1,1],"voltage",[v_bias, 9]);
|
||||
dcs.set("voltage",[v_bias, 9]);
|
||||
|
||||
voa = OptAtten("active",[0,2,1,1],"value",[0,pd_in_desired,0,i_atten],"wavelength",[1310,1310,1310,1310]);
|
||||
voa.set('active',[0,2,1,1],'value',[0,pd_in_desired,0,i_atten]);
|
||||
voa.readvals();
|
||||
%%%%% SET Volatges %%%%%%
|
||||
voa = OptAtten("active",[1,2,1,1],"value",[0,pd_in_desired,0,i_atten],"wavelength",[1310,1310,1310,1310]);
|
||||
% voa.set('active',[1,2,1,1],'value',[0,pd_in_desired,0,i_atten]);
|
||||
% voa.readvals();
|
||||
|
||||
SCP = ScopeKeysight("model","DSAZ634A",'autoscale',1,"fadc",'GSa_160',"channel",[1,0],"recordLen",2000000,"removeDC",1);
|
||||
AWG = AwgKeysight("model","M8196A","fdac",fdac,"scaletodac",[1,1,1,1],"skews",[0,0,0,0],"voltages",[0,0,0,0.62]);
|
||||
A2S = Awg2Scope(AWG,SCP,[0,0,0,1]);
|
||||
|
||||
|
||||
if 1
|
||||
@@ -45,6 +52,7 @@ end
|
||||
|
||||
%%%%% Symbol Generation %%%%%%
|
||||
Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rrcalpha);
|
||||
|
||||
[Digi_sig,Symbols,Bits] = PAMsource("fsym",fsym,"M",M,"order",18,"useprbs",1,...
|
||||
"fs_out",fdac,"applyclipping",0,"clipfactor",1.7,...
|
||||
"applypulseform",0,"pulseformer",Pform,"randkey",pn_key,...
|
||||
@@ -59,24 +67,23 @@ elseif precomp_mode == 2 % apply precomp
|
||||
Digi_sig = freqresp.precomp(Digi_sig,'maxampdb',3,'loadPath',precomp_path,'fileName',precomp_fn);
|
||||
end
|
||||
|
||||
%%%%% AWG %%%%%%
|
||||
AWG = AwgKeysight("model","M8196A","fdac",fdac,"scaletodac",[1,1,1,1],"skews",[0,0,0,0],"voltages",[0,0,0,0.62]);
|
||||
AWG.upload("signal4",Digi_sig);
|
||||
Digi_sig = Digi_sig.resample("fs_out",AWG.fdac);
|
||||
|
||||
save([folderpath,'bits'],"Bits");
|
||||
save([folderpath,'symbols'],"Symbols");
|
||||
|
||||
for i_atten = wh.parameter.i_atten.values
|
||||
|
||||
%%%%% SET ATTENUATOR %%%%%%
|
||||
voa.set('active',[0,2,1,1],'value',[0,7,0,i_atten]);
|
||||
voa.set('active',[1,2,1,1],'value',[0,7,0,i_atten]);
|
||||
|
||||
%%%%% Scope %%%%%%
|
||||
SCP = ScopeKeysight("model","DSAZ634A",'autoscale',1,"fadc",'GSa_160',"channel",[1],"recordLen",2000000,"removeDC",1);
|
||||
Scpe_sig = SCP.read();
|
||||
Scpe_sig = Electricalsignal(Scpe_sig{1},"fs",fadc);
|
||||
%%%%% AWG --> Scope %%%%%%
|
||||
[~,~,~,Scpe_sig] = A2S.process("signal4",Digi_sig);
|
||||
|
||||
% Scpe_sig.spectrum("displayname",'Rx Signal','fignum',10);
|
||||
|
||||
%%%%%% Sample to 2x fsym %%%%%%
|
||||
Scpe_sig = Scpe_sig.resample("fs_in",160e9,"fs_out",2*92e9);
|
||||
Scpe_sig = Scpe_sig.resample("fs_in",160e9,"fs_out",2*fsym);
|
||||
|
||||
if precomp_mode == 1
|
||||
freqresp.estimate(Scpe_sig,"save",true,"savePath",precomp_path,"fileName",precomp_fn);
|
||||
@@ -85,44 +92,57 @@ for i_atten = wh.parameter.i_atten.values
|
||||
|
||||
%%%%%% Sync Rx signal with reference %%%%%%
|
||||
[Scpe_sig,S] = Scpe_sig.tsynch("reference",Symbols,"fs_ref",fsym);
|
||||
save([folderpath,'rx_iatten_',num2str(i_atten),''],"S");
|
||||
|
||||
Scpe_sig.eye(fsym,M);
|
||||
Scpe_sig.spectrum("displayname","Scope PSD","fignum",1996);
|
||||
|
||||
%%%%% EQUALIZE %%%%%%
|
||||
|
||||
% Scpe_sig.signal = Scpe_sig.signal - movmean(Scpe_sig.signal,[100,0]);
|
||||
|
||||
Eq_ffe_only = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",25,"sps",2,"decide",0);
|
||||
ber_ffe_only = runEQ(Eq_ffe_only,Scpe_sig,Symbols,Bits,M);
|
||||
Eq_ffe_only = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",50,"sps",2,"decide",0);
|
||||
[ber_ffe_only,EQ_sig,Noi] = runEQ(Eq_ffe_only,Scpe_sig,Symbols,Bits,M);
|
||||
|
||||
Eq_move_it = EQ("Ne",[50,7,7],"Nb",[0,0,0],"training_length",4096*2,"training_loops",5,"dd_loops",5,"K",2,"DCmu",0.05,"DDmu",[0.0004 0.0004 0.0004 0.0004 ],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);
|
||||
ber_move_it = runEQ(Eq_move_it,Scpe_sig,Symbols,Bits,M);
|
||||
nc = 2;
|
||||
burg_coeff = arburg(Noi.signal,nc);
|
||||
|
||||
EQ_sig = EQ_sig.filter(burg_coeff,1);
|
||||
|
||||
EQ_sig.plot("displayname",'After EQ','fignum',1112);
|
||||
|
||||
if 0
|
||||
Noi.spectrum('displayname','Noise PSD','fignum',123)
|
||||
[h,w] = freqz(1,burg_coeff,length(Noi),"whole",Noi.fs);
|
||||
h = h/max(abs(h));
|
||||
hold on
|
||||
w_ = (w - Noi.fs/2);
|
||||
plot(w_.*1e-9,20*log10(fftshift(h)),'DisplayName',['', num2str(nc), ' coefficients for burg alg.']);
|
||||
end
|
||||
|
||||
% EQ_sig.spectrum("displayname","Signal Spectrum after Postfilter","fignum",1234);
|
||||
|
||||
Eq_nonlin = EQ("Ne",[50,7,7],"Nb",[0,0,0],"training_length",4096*2,"training_loops",5,"dd_loops",5,"K",2,"DCmu",0.0,"DDmu",[0.0004 0.0004 0.0004 0.0004 ],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);
|
||||
%VNLE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",[0.0004 0.0005 0.0006],"mu_tr",0,"order",[50,7,7],"sps",2,"decide",0);
|
||||
ber_nonlin = runEQ(Eq_nonlin,Scpe_sig,Symbols,Bits,M);
|
||||
|
||||
Eq_adaptive_decision = FFE_adaptive_decision("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",25,"sps",2,"decide",0,"buffer_length",80);
|
||||
ber_adaptive_decision = runEQ(Eq_adaptive_decision,Scpe_sig,Symbols,Bits,M);
|
||||
|
||||
FFE_FFDCAVG("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",25,"sps",2,"decide",0,"mu_buff",128);
|
||||
ber_ff_dcavg = runEQ(FFE_FFDCAVG,Scpe_sig,Symbols,Bits,M);
|
||||
|
||||
Eq_feedback_removal = FFE_DCremoval("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",25,"sps",2,"decide",0,"mu_dc",0.05,"dc_buffer_len",1);
|
||||
ber_feedback_removal = runEQ(Eq_feedback_removal,Scpe_sig,Symbols,Bits,M);
|
||||
|
||||
EQ_sig = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
|
||||
[~,errors_bm,ber_pf,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
sir = voa.power_state(3)-voa.power_state(4);
|
||||
pd_in = voa.power_state(2);
|
||||
|
||||
disp(['BER: ',sprintf('%.1E',ber_eq),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
disp(['FFE: ',sprintf('%.1E',ber_ffe_only),' -> PF -> MLSE: ',sprintf('%.1E',ber_pf),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
wh.addValueToStorage(ber_eq,'ber',i_atten);
|
||||
wh.addValueToStorage(ber_ffe_only,'ber',i_atten);
|
||||
wh.addValueToStorage(ber_pf,'ber_pf',i_atten);
|
||||
wh.addValueToStorage(sir,'sir',i_atten);
|
||||
wh.addValueToStorage(pd_in,'pd_in',i_atten);
|
||||
wh.addValueToStorage(Rx_bits,'signals',i_atten);
|
||||
|
||||
end
|
||||
|
||||
|
||||
name = ['mpidata_92GBd'];
|
||||
wh.save([folderpath,name]);
|
||||
|
||||
cols = linspecer(8);
|
||||
|
||||
|
||||
68
projects/Lab_2024/lab_modulator_tf_sweep.m
Normal file
68
projects/Lab_2024/lab_modulator_tf_sweep.m
Normal file
@@ -0,0 +1,68 @@
|
||||
% Initialize a structure to hold parameters
|
||||
params = struct;
|
||||
|
||||
% Define the bias voltage range from 1.2V to 2.8V with 0.01V increments
|
||||
params.v_bias = 1.2:0.01:2.8;
|
||||
|
||||
% Create a DataStorage object with the defined parameters
|
||||
wh = DataStorage(params);
|
||||
|
||||
% Add a storage field for output power measurements
|
||||
wh.addStorage("p_out");
|
||||
|
||||
% Display the total number of measurement loops to be executed
|
||||
disp(['Start Measurement of ', num2str(prod(wh.dim)), ' loops...']);
|
||||
|
||||
% Initialize the Optical Attenuator (VOA) with specified settings
|
||||
voa = OptAtten(...
|
||||
"active", [1, 0, 0, 0], ... % Activate only the first channel
|
||||
"value", [0, 0, 0, 0], ... % Set attenuation values to 0 dB
|
||||
"wavelength", [1310, 1310, 1310, 1310]); % Set the wavelength for each channel
|
||||
|
||||
% Initialize the DC Power Supply with specified settings
|
||||
dcs = DC_supply(...
|
||||
"active", [1, 1], ... % Activate the first two channels
|
||||
"voltage", [v_bias, 9]); % Set initial voltages for channels
|
||||
|
||||
% Set the VOA active channels and attenuation values
|
||||
voa.set('active', [1, 0, 0, 0], 'value', [0, 0, 0, 0]);
|
||||
|
||||
% Loop over each bias voltage value to perform measurements
|
||||
for v_bias = wh.parameter.v_bias.values
|
||||
try
|
||||
% Try to retrieve existing output power measurement to avoid repetition
|
||||
p_out = wh2.getStoValue('p_out', v_bias);
|
||||
wh.addValueToStorage(p_out, 'p_out', v_bias);
|
||||
catch
|
||||
% If no existing measurement, proceed with the measurement
|
||||
|
||||
%%%%% SET Voltages %%%%%%
|
||||
% Update the DC supply voltage for the current bias voltage
|
||||
dcs.set("voltage", [v_bias, 9]);
|
||||
|
||||
%%%%% Measure VOA %%%%%%
|
||||
% Read the current values from the VOA
|
||||
voa.readvals();
|
||||
|
||||
% Store the measured output power in the DataStorage object
|
||||
wh.addValueToStorage(voa.power_state(1), 'p_out', v_bias);
|
||||
end
|
||||
|
||||
% Retrieve all stored output power measurements up to the current point
|
||||
p_out = wh.getStoValue('p_out', wh.parameter.v_bias.values);
|
||||
|
||||
% Plot the measured output power in dBm versus the negative bias voltage
|
||||
figure(90);
|
||||
plot(-wh.parameter.v_bias.values(1:numel(p_out)), p_out, 'DisplayName', 'Measured Output Power in dBm');
|
||||
xlim([-max(params.v_bias), -min(params.v_bias)]); % Set x-axis limits
|
||||
grid on; % Enable grid for better readability
|
||||
end
|
||||
|
||||
% After completing the measurements, retrieve all output power data
|
||||
p_out = wh.getStoValue('p_out', wh.parameter.v_bias.values);
|
||||
|
||||
% Plot the output power converted from dBm to linear scale (Watts)
|
||||
figure(91);
|
||||
plot(-wh.parameter.v_bias.values(1:numel(p_out)), db2pow(p_out), 'DisplayName', 'Measured Output Power in Watts');
|
||||
xlim([-max(params.v_bias), -min(params.v_bias)]); % Set x-axis limits
|
||||
grid on; % Enable grid for better readability
|
||||
265
projects/Lab_2024/lab_precompensation_sweep.m
Normal file
265
projects/Lab_2024/lab_precompensation_sweep.m
Normal file
@@ -0,0 +1,265 @@
|
||||
|
||||
folderpath = 'C:\Users\sioe\Nextcloud\Dokumente\02_Ablage_Office\Lab_Data_24\precompensation_sweep\';
|
||||
experiment_name = 'PAM4_DBencode_10km_';
|
||||
|
||||
% a = load([folderpath,experiment_name,'_wh']);
|
||||
% wh2 = a.obj;
|
||||
|
||||
|
||||
ffe_only = 0;
|
||||
postfilter_approach = 0;
|
||||
db_channel_approach = 0;
|
||||
db_coding_approach = 1;
|
||||
|
||||
db_precode = db_coding_approach || db_channel_approach;
|
||||
|
||||
%%% SIR Sweep for MPI Experiment %%%
|
||||
params = struct;
|
||||
|
||||
params.precomp_amp_max = [-6:6];
|
||||
|
||||
wh = DataStorage(params);
|
||||
|
||||
wh.addStorage("ber");
|
||||
wh.addStorage("pd_in");
|
||||
wh.addStorage("rop");
|
||||
wh.addStorage("m");
|
||||
wh.addStorage("signals");
|
||||
|
||||
precomp_path = "C:\Users\sioe\Documents\MATLAB\imdd_simulation\projects\standard_system\";
|
||||
precomp_fn = "lab_mpi_setup_2";
|
||||
precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
|
||||
% precomp_amp_max = -2;
|
||||
|
||||
M = 4;
|
||||
pn_key = 2;
|
||||
usemrds = 0;
|
||||
fsym = 92e9;
|
||||
fdac = 92e9;
|
||||
awg_vpp = 0.2;
|
||||
fadc = 160e9;
|
||||
rrcalpha = 0.05;
|
||||
v_bias = 2.35;
|
||||
pd_in_set = 6;
|
||||
rop_atten = 0;
|
||||
|
||||
looptatal = prod(wh.dim);
|
||||
disp(['Start Measurement of ',num2str(looptatal),' loops...'])
|
||||
hWaitbar = waitbar(0, 'Starting measurement...', 'Name', 'Processing Progress');
|
||||
loopcnt = 0;
|
||||
|
||||
for precomp_amp_max = wh.parameter.precomp_amp_max.values
|
||||
|
||||
loopcnt = loopcnt+1;
|
||||
progressFraction = loopcnt / looptatal;
|
||||
waitbar(progressFraction, hWaitbar, ...
|
||||
sprintf('Progress: %d/%d', loopcnt, looptatal));
|
||||
|
||||
|
||||
loop_name = ['_fsym_',num2str(fsym)];
|
||||
|
||||
%%%%% SET Voltages %%%%%%
|
||||
dcs = DC_supply("active",[1,1],"voltage",[v_bias, 9]);
|
||||
dcs.set("voltage",[v_bias, 9]);
|
||||
|
||||
%%%%% SET Attenuator %%%%%%
|
||||
voa = OptAtten("active",[1,2,1,1],"value",[rop_atten,pd_in_set,0,0],"wavelength",[1310,1310,1310,1310]);
|
||||
voa.set('active',[1,2,1,1],'value',[rop_atten,pd_in_set,0,0]);
|
||||
% voa.readvals();
|
||||
|
||||
%%%%% Construct AWG and Scope Modules %%%%%%
|
||||
SCP = ScopeKeysight("model","DSAZ634A",'autoscale',1,"fadc",'GSa_160',"channel",[1,0],"recordLen",1000000,"removeDC",1);
|
||||
AWG = AwgKeysight("model","M8196A","fdac",fdac,"scaletodac",[1,1,1,1],"skews",[0,0,0,0],"voltages",[0,0,0,awg_vpp]);
|
||||
A2S = Awg2Scope(AWG,SCP,[0,0,0,1]);
|
||||
|
||||
|
||||
%%%%% Symbol Generation %%%%%%
|
||||
Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rrcalpha);
|
||||
|
||||
[Digi_sig,Symbols,Bits] = PAMsource("fsym",fsym,"M",M,"order",18,"useprbs",1,...
|
||||
"fs_out",fdac,"applyclipping",0,"clipfactor",1.7,...
|
||||
"applypulseform",0,"pulseformer",Pform,"randkey",pn_key,...
|
||||
"db_precode",db_precode,...
|
||||
"mrds_code",usemrds,"mrds_blocklength",512,"db_encode",db_coding_approach).process();
|
||||
|
||||
%%%%% Precompensation Routine %%%%%%
|
||||
if precomp_mode == 1 % measure channel
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
|
||||
Digi_sig = freqresp.buildOFDM();
|
||||
elseif precomp_mode == 2 % apply precomp
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
|
||||
Digi_sig = freqresp.precomp(Digi_sig,'maxampdb',precomp_amp_max,'loadPath',precomp_path,'fileName',precomp_fn);
|
||||
end
|
||||
|
||||
%%%%% Resample to DAC rate %%%%%%
|
||||
Digi_sig = Digi_sig.resample("fs_out",AWG.fdac);
|
||||
|
||||
|
||||
%%%%% Plot and Save Routine 1 %%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
% Digi_sig.spectrum("displayname","Normal Tx","fignum",10);
|
||||
|
||||
% save([folderpath,[experiment_name,'bits'],loop_name],"Bits");
|
||||
% save([folderpath,[experiment_name,'symbols'],loop_name],"Symbols");
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
%%%%% AWG --> Scope %%%%%%
|
||||
[~,~,~,Scpe_sig] = A2S.process("signal4",Digi_sig);
|
||||
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
% Scpe_sig.spectrum("displayname","Scope PSD","fignum",20);
|
||||
|
||||
% Scpe_sig.plot("displayname","Scope raw signal","fignum",25);
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
|
||||
%%%%%% Sample to 2x fsym %%%%%%
|
||||
Scpe_sig = Scpe_sig.resample("fs_in",160e9,"fs_out",2*fsym);
|
||||
|
||||
%%%%% Precompensation Routine %%%%%%
|
||||
if precomp_mode == 1
|
||||
freqresp.estimate(Scpe_sig,"save",true,"savePath",precomp_path,"fileName",precomp_fn);
|
||||
freqresp.plot();
|
||||
end
|
||||
|
||||
%%%%%% Sync Rx signal with reference %%%%%%
|
||||
[Scpe_sig,S] = Scpe_sig.tsynch("reference",Symbols,"fs_ref",fsym);
|
||||
|
||||
%%%%%% SNR CHEAT - Avg. the measured signal occurences %%%%%%
|
||||
average_signals = 0;
|
||||
if average_signals
|
||||
scope_mean = zeros(size(S{1}.signal));
|
||||
for n=1:numel(S)
|
||||
scope_mean = scope_mean + S{n}.signal;
|
||||
end
|
||||
scope_mean = scope_mean ./ n;
|
||||
Scpe_sig.signal = scope_mean;
|
||||
end
|
||||
|
||||
%%%%% Plot and Save Routine 2 %%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
save([folderpath,experiment_name,'rx_signal',loop_name],"S");
|
||||
Scpe_sig.eye(fsym,M,"fignum",40,"displayname",' after Scope');
|
||||
|
||||
voa.readvals();
|
||||
rop = voa.power_state(1);
|
||||
pd_in = voa.power_state(2);
|
||||
|
||||
|
||||
%%%%% EQUALIZE %%%%%%
|
||||
Eq = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",50,"sps",2,"decide",0);
|
||||
Eq = VNLE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",[0.0004 0.0005 0.0006],"mu_tr",0,"order",[50,7,7],"sps",2,"decide",1);
|
||||
Eq = EQ("Ne",[50,7,7],"Nb",[0,0,0],"training_length",4096*2,"training_loops",5,"dd_loops",5,"K",2,"DCmu",0.05,"DDmu",[0.0004 0.0004 0.0004 0.0004 ],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);
|
||||
|
||||
if ffe_only %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber),'| ROP: ',num2str(rop),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
if 1
|
||||
figure(53);
|
||||
constellation = unique(Symbols.signal);
|
||||
received = NaN(numel(constellation),length(Symbols));
|
||||
for lvl = 1:numel(constellation)
|
||||
received(lvl,Symbols.signal==constellation(lvl)) = EQ_sig.signal(Symbols.signal==constellation(lvl));
|
||||
hold on
|
||||
histogram(received(lvl,:),1000,"EdgeAlpha",0);
|
||||
end
|
||||
end
|
||||
|
||||
elseif postfilter_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
Noi = EQ_sig-Symbols;
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber_ffe_only,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
nc = 2;
|
||||
burg_coeff = arburg(Noi.signal,nc);
|
||||
|
||||
EQ_sig = EQ_sig.filter(burg_coeff,1);
|
||||
|
||||
if 0
|
||||
Noi.spectrum('displayname','Noise PSD','fignum',123)
|
||||
[h,w] = freqz(1,burg_coeff,length(Noi),"whole",Noi.fs);
|
||||
h = h/max(abs(h));
|
||||
hold on
|
||||
w_ = (w - Noi.fs/2);
|
||||
plot(w_.*1e-9,20*log10(fftshift(h)),'DisplayName',['', num2str(nc), ' coefficients for burg alg.']);
|
||||
end
|
||||
|
||||
EQ_sig = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber_ffe_only),' -> PF -> MLSE: ',sprintf('%.1E',ber),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_channel_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Duobinary().encode(Symbols));
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp([' DB Precode -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_coding_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Symbols);
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
disp([' DB Precode -> DB Code -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
end
|
||||
|
||||
|
||||
wh.addValueToStorage(ber,'ber',precomp_amp_max);
|
||||
wh.addValueToStorage(rop,'rop',precomp_amp_max);
|
||||
wh.addValueToStorage(pd_in,'pd_in',precomp_amp_max);
|
||||
wh.addValueToStorage(Rx_bits,'signals',precomp_amp_max);
|
||||
wh.addValueToStorage(M,'m',precomp_amp_max);
|
||||
|
||||
showCurrentMeasurement('BER', ber, 'ROP', rop, 'PD in', pd_in, 'PAM',M, 'Vbias', v_bias, 'AWG Vpp', awg_vpp, 'Precomp MaxAmp',precomp_amp_max);
|
||||
autoArrangeFigures(3,3,2);
|
||||
|
||||
|
||||
end
|
||||
|
||||
close(hWaitbar);
|
||||
|
||||
wh.save([folderpath,experiment_name,'_wh']);
|
||||
|
||||
autoArrangeFigures(3,3,2)
|
||||
|
||||
figure(90)
|
||||
amp_vals = wh.parameter.precomp_amp_max.values;
|
||||
ber = wh.getStoValue('ber',wh.parameter.precomp_amp_max.values);
|
||||
plot(amp_vals,ber,'DisplayName',['PAM ',num2str(M)]);
|
||||
xlabel('Precompensation Max Amp');
|
||||
ylabel('BER');
|
||||
grid on
|
||||
grid minor
|
||||
title('Bit Error Rate vs. ROP');
|
||||
set(gca, 'yscale', 'log');
|
||||
legend
|
||||
261
projects/Lab_2024/lab_rop_sweep.m
Normal file
261
projects/Lab_2024/lab_rop_sweep.m
Normal file
@@ -0,0 +1,261 @@
|
||||
|
||||
folderpath = 'C:\Users\sioe\Nextcloud\Dokumente\02_Ablage_Office\Lab_Data_24\no_mpi_2024\';
|
||||
experiment_name = '10km_ffe_no_mpi_';
|
||||
|
||||
ffe_only = 1;
|
||||
postfilter_approach = 0;
|
||||
db_channel_approach = 0;
|
||||
db_coding_approach = 0;
|
||||
|
||||
db_precode = db_coding_approach || db_channel_approach;
|
||||
|
||||
%%% SIR Sweep for MPI Experiment %%%
|
||||
params = struct;
|
||||
params.rop_atten = [7:-1:0]; % high atten to low atten to make sure there is no sudden opening of VOA
|
||||
params.pd_in_set = [6]; % desired P_out (outp. power mode=2)
|
||||
|
||||
wh = DataStorage(params);
|
||||
|
||||
wh.addStorage("ber");
|
||||
wh.addStorage("pd_in");
|
||||
wh.addStorage("rop");
|
||||
wh.addStorage("signals");
|
||||
|
||||
precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
|
||||
precomp_amp_max = 3;
|
||||
|
||||
M = 4;
|
||||
pn_key = 2;
|
||||
usemrds = 0;
|
||||
fdac = 92e9;
|
||||
fsym = 92e9;
|
||||
fadc = 160e9;
|
||||
rrcalpha = 0.05;
|
||||
v_bias = 2.25;
|
||||
|
||||
disp(['Start Measurement of ',num2str(prod(wh.dim)),' loops...'])
|
||||
|
||||
for rop_atten = wh.parameter.rop_atten.values
|
||||
for pd_in_set = wh.parameter.pd_in_set.values
|
||||
|
||||
loop_name = ['_ropatten_',num2str(rop_atten),'_pdin_',num2str(pd_in_set)];
|
||||
|
||||
%%%%% SET Voltages %%%%%%
|
||||
dcs = DC_supply("active",[1,1],"voltage",[v_bias, 9]);
|
||||
dcs.set("voltage",[v_bias, 9]);
|
||||
|
||||
voa = OptAtten("active",[1,2,1,1],"value",[rop_atten,pd_in_set,0,0],"wavelength",[1310,1310,1310,1310]);
|
||||
voa.set('active',[1,2,1,1],'value',[rop_atten,pd_in_set,0,0]);
|
||||
% voa.readvals();
|
||||
|
||||
SCP = ScopeKeysight("model","DSAZ634A",'autoscale',1,"fadc",'GSa_160',"channel",[1,0],"recordLen",1000000,"removeDC",1);
|
||||
AWG = AwgKeysight("model","M8196A","fdac",fdac,"scaletodac",[1,1,1,1],"skews",[0,0,0,0],"voltages",[0,0,0,0.62]);
|
||||
A2S = Awg2Scope(AWG,SCP,[0,0,0,1]);
|
||||
|
||||
if 1
|
||||
precomp_path = "C:\Users\sioe\Documents\MATLAB\imdd_simulation\projects\standard_system\";
|
||||
precomp_fn = "lab_mpi_setup_2";
|
||||
else
|
||||
precomp_path = "C:\Users\sioe\Documents\MATLAB\model-collection\sioe_models\Labor_2024\Lab_PAM4\";
|
||||
precomp_fn = "precomp_bla__loop1_1";
|
||||
end
|
||||
|
||||
|
||||
%%%%% Symbol Generation %%%%%%
|
||||
Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rrcalpha);
|
||||
|
||||
[Digi_sig,Symbols,Bits] = PAMsource("fsym",fsym,"M",M,"order",18,"useprbs",1,...
|
||||
"fs_out",fdac,"applyclipping",0,"clipfactor",1.7,...
|
||||
"applypulseform",0,"pulseformer",Pform,"randkey",pn_key,...
|
||||
"db_precode",db_precode,...
|
||||
"mrds_code",usemrds,"mrds_blocklength",512,"db_encode",db_coding_approach).process();
|
||||
|
||||
if precomp_mode == 1 % measure channel
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
|
||||
Digi_sig = freqresp.buildOFDM();
|
||||
elseif precomp_mode == 2 % apply precomp
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
|
||||
Digi_sig = freqresp.precomp(Digi_sig,'maxampdb',precomp_amp_max,'loadPath',precomp_path,'fileName',precomp_fn);
|
||||
end
|
||||
|
||||
Digi_sig = Digi_sig.resample("fs_out",AWG.fdac);
|
||||
|
||||
Digi_sig.spectrum("displayname","Normal Tx","fignum",10);
|
||||
|
||||
|
||||
save([folderpath,[experiment_name,'bits'],loop_name],"Bits");
|
||||
save([folderpath,[experiment_name,'symbols'],loop_name],"Symbols");
|
||||
|
||||
%%%%% AWG --> Scope %%%%%%
|
||||
[~,~,~,Scpe_sig] = A2S.process("signal4",Digi_sig);
|
||||
|
||||
Scpe_sig.spectrum("displayname","Scope PSD","fignum",20);
|
||||
|
||||
|
||||
|
||||
% Scpe_sig.spectrum("displayname",'Rx Signal','fignum',10);
|
||||
|
||||
%%%%%% Sample to 2x fsym %%%%%%
|
||||
Scpe_sig = Scpe_sig.resample("fs_in",160e9,"fs_out",2*fsym);
|
||||
|
||||
if precomp_mode == 1
|
||||
freqresp.estimate(Scpe_sig,"save",true,"savePath",precomp_path,"fileName",precomp_fn);
|
||||
freqresp.plot();
|
||||
end
|
||||
|
||||
%%%%%% Sync Rx signal with reference %%%%%%
|
||||
[Scpe_sig,S] = Scpe_sig.tsynch("reference",Symbols,"fs_ref",fsym);
|
||||
save([folderpath,experiment_name,'rx_signal',loop_name],"S");
|
||||
|
||||
average_signals = 0;
|
||||
if average_signals
|
||||
scope_mean = zeros(size(S{1}.signal));
|
||||
for n=1:numel(S)
|
||||
scope_mean = scope_mean + S{n}.signal;
|
||||
end
|
||||
scope_mean = scope_mean ./ n;
|
||||
Scpe_sig.signal = scope_mean;
|
||||
end
|
||||
|
||||
Scpe_sig.plot("displayname","Scope PSD","fignum",30);
|
||||
Scpe_sig.eye(fsym,M,"fignum",40,"displayname",' after Scope');
|
||||
|
||||
voa.readvals();
|
||||
rop = voa.power_state(1);
|
||||
pd_in = voa.power_state(2);
|
||||
|
||||
|
||||
%%%%% EQUALIZE %%%%%%
|
||||
Eq = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",50,"sps",2,"decide",0);
|
||||
Eq = VNLE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",[0.0004 0.0005 0.0006],"mu_tr",0,"order",[50,7,7],"sps",2,"decide",1);
|
||||
Eq = EQ("Ne",[50,7,7],"Nb",[0,0,0],"training_length",4096*2,"training_loops",5,"dd_loops",5,"K",2,"DCmu",0.0,"DDmu",[0.0004 0.0004 0.0004 0.0004 ],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);
|
||||
|
||||
if ffe_only %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber),'| ROP: ',num2str(rop),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif postfilter_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
Noi = EQ_sig-Symbols;
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber_ffe_only,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
nc = 2;
|
||||
burg_coeff = arburg(Noi.signal,nc);
|
||||
|
||||
EQ_sig = EQ_sig.filter(burg_coeff,1);
|
||||
|
||||
if 0
|
||||
Noi.spectrum('displayname','Noise PSD','fignum',123)
|
||||
[h,w] = freqz(1,burg_coeff,length(Noi),"whole",Noi.fs);
|
||||
h = h/max(abs(h));
|
||||
hold on
|
||||
w_ = (w - Noi.fs/2);
|
||||
plot(w_.*1e-9,20*log10(fftshift(h)),'DisplayName',['', num2str(nc), ' coefficients for burg alg.']);
|
||||
end
|
||||
|
||||
EQ_sig = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber_ffe_only),' -> PF -> MLSE: ',sprintf('%.1E',ber),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_channel_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Duobinary().encode(Symbols));
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp([' DB Precode -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_coding_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Symbols);
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
disp([' DB Precode -> DB Code -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
end
|
||||
|
||||
wh.addValueToStorage(ber,'ber',rop_atten,pd_in_set);
|
||||
wh.addValueToStorage(rop,'rop',rop_atten,pd_in_set);
|
||||
wh.addValueToStorage(pd_in,'pd_in',rop_atten,pd_in_set);
|
||||
wh.addValueToStorage(Rx_bits,'signals',rop_atten,pd_in_set);
|
||||
|
||||
showCurrentMeasurement('BER', ber, 'ROP', rop, 'PD in', pd_in);
|
||||
autoArrangeFigures(3,3,2);
|
||||
end
|
||||
end
|
||||
|
||||
wh.save([folderpath,experiment_name,'_wh']);
|
||||
|
||||
cols = linspecer(8);
|
||||
|
||||
rop_vals = wh.parameter.rop_atten.values;
|
||||
pd_in_set = wh.parameter.pd_in_set.values(1);
|
||||
|
||||
bers = wh.getStoValue('ber',rop_vals,pd_in_set);
|
||||
rop_measured = wh.getStoValue('rop',rop_vals,pd_in_set);
|
||||
pd_in_measured = wh.getStoValue('pd_in',rop_vals,pd_in_set);
|
||||
|
||||
s = wh.getStoValue('signals',rop_vals,pd_in_set);
|
||||
|
||||
figure(90);
|
||||
hold on; % Retain the plot so new points can be added without complete redraw
|
||||
|
||||
% Plot the data and get the line handle
|
||||
hLine = plot(rop_measured, bers, "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", experiment_name);
|
||||
|
||||
% Store pd_in_measured in the ZData property
|
||||
hLine.ZData = pd_in_measured;
|
||||
|
||||
% Customize the data tips
|
||||
% Set labels for existing data tip rows
|
||||
hLine.DataTipTemplate.DataTipRows(1).Label = 'ROP';
|
||||
hLine.DataTipTemplate.DataTipRows(2).Label = 'BER';
|
||||
hLine.DataTipTemplate.DataTipRows(2).Format = '%.2e'; % Format BER as "3e-4"
|
||||
|
||||
|
||||
% Add a new data tip row for PDin
|
||||
pdinRow = dataTipTextRow('PDin', 'ZData');
|
||||
hLine.DataTipTemplate.DataTipRows(3) = pdinRow;
|
||||
|
||||
% Continue with the rest of your plot settings
|
||||
yline(3.8e-3, 'DisplayName', 'HD-FEC', 'LineStyle', '--', 'HandleVisibility', 'off');
|
||||
xlabel('Received Optical Power (dBm)');
|
||||
ylabel('Bit Error Rate (BER)');
|
||||
title('Bit Error Rate vs. ROP');
|
||||
set(gca, 'yscale', 'log');
|
||||
set(gca, 'Box', 'on');
|
||||
grid on;
|
||||
grid minor;
|
||||
legend('Interpreter', 'none');
|
||||
|
||||
autoArrangeFigures(3,3,2)
|
||||
|
||||
368
projects/Lab_2024/lab_sir_sweep.m
Normal file
368
projects/Lab_2024/lab_sir_sweep.m
Normal file
@@ -0,0 +1,368 @@
|
||||
|
||||
folderpath = 'C:\Users\sioe\Nextcloud\Dokumente\02_Ablage_Office\Lab_Data_24\sir_sweep_pam4\';
|
||||
experiment_name = 'PAM4_DB_encoded_10km_';
|
||||
|
||||
%%% SIR Sweep for MPI Experiment %%%
|
||||
params = struct;
|
||||
|
||||
params.vbias = [2.45];
|
||||
params.awg_vpp = [0.25];
|
||||
params.eq_mode = [4];
|
||||
params.i_atten = [0:4:40];
|
||||
|
||||
wh = DataStorage(params);
|
||||
|
||||
wh.addStorage("ber");
|
||||
wh.addStorage("pd_in");
|
||||
wh.addStorage("m");
|
||||
wh.addStorage("sir");
|
||||
wh.addStorage("s_pow");
|
||||
wh.addStorage("i_pow");
|
||||
wh.addStorage("signals");
|
||||
|
||||
precomp_path = "C:\Users\sioe\Documents\MATLAB\imdd_simulation\projects\standard_system\";
|
||||
precomp_fn = "lab_mpi_setup_2";
|
||||
precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
|
||||
precomp_amp_max = 5;
|
||||
|
||||
M = 4;
|
||||
pn_key = 2;
|
||||
usemrds = 0;
|
||||
fsym = 92e9;
|
||||
fdac = 92e9;
|
||||
awg_vpp = 0.35;
|
||||
fadc = 160e9;
|
||||
rrcalpha = 0.05;
|
||||
v_bias = 2.25;
|
||||
pd_in_set = 6;
|
||||
|
||||
looptotal = prod(wh.dim);
|
||||
iterationTimes = zeros(looptotal, 1); % Preallocate for speed
|
||||
|
||||
disp(['Start Measurement of ',num2str(looptotal),' loops...'])
|
||||
hWaitbar = waitbar(0, 'Starting measurement...', 'Name', 'Processing Progress');
|
||||
loopcnt = 0;
|
||||
|
||||
estimatedTimeRemaining = 0;
|
||||
estimatedTotalTime = 0;
|
||||
for eq_mode = wh.parameter.eq_mode.values
|
||||
for i_atten = wh.parameter.i_atten.values
|
||||
for v_bias = wh.parameter.vbias.values
|
||||
for awg_vpp = wh.parameter.awg_vpp.values
|
||||
|
||||
iterationStartTime = tic;
|
||||
|
||||
loop_name = ['_iatten_',num2str(i_atten)];
|
||||
|
||||
loopcnt = loopcnt+1;
|
||||
progressFraction = loopcnt / looptotal;
|
||||
waitbar(progressFraction, hWaitbar, ...
|
||||
sprintf('Progress: %d/%d\nEstimated time remaining: %.2f hours\nEstimated time remaining: %.2f hours', ...
|
||||
loopcnt, looptotal, estimatedTimeRemaining/60/60, estimatedTotalTime/60/60));
|
||||
|
||||
try
|
||||
|
||||
z
|
||||
ber = wh2.getStoValue('ber',v_bias,awg_vpp,eq_mode,precomp_amp_max);
|
||||
assert(~isempty(ber),'err')
|
||||
rop = wh2.getStoValue('rop',v_bias,awg_vpp,eq_mode,precomp_amp_max);
|
||||
assert(~isempty(rop))
|
||||
pd_in = wh2.getStoValue('pd_in',v_bias,awg_vpp,eq_mode,precomp_amp_max);
|
||||
assert(~isempty(pd_in))
|
||||
M = wh2.getStoValue('m',v_bias,awg_vpp,eq_mode,precomp_amp_max);
|
||||
assert(~isempty(M))
|
||||
|
||||
catch
|
||||
|
||||
|
||||
|
||||
|
||||
switch eq_mode
|
||||
case 1
|
||||
ffe_only = 1;
|
||||
postfilter_approach = 0;
|
||||
db_channel_approach = 0;
|
||||
db_coding_approach = 0;
|
||||
|
||||
db_precode = db_coding_approach || db_channel_approach;
|
||||
|
||||
case 2
|
||||
ffe_only = 0;
|
||||
postfilter_approach = 1;
|
||||
db_channel_approach = 0;
|
||||
db_coding_approach = 0;
|
||||
|
||||
db_precode = db_coding_approach || db_channel_approach;
|
||||
case 3
|
||||
ffe_only = 0;
|
||||
postfilter_approach = 0;
|
||||
db_channel_approach = 1;
|
||||
db_coding_approach = 0;
|
||||
|
||||
db_precode = db_coding_approach || db_channel_approach;
|
||||
case 4
|
||||
ffe_only = 0;
|
||||
postfilter_approach = 0;
|
||||
db_channel_approach = 0;
|
||||
db_coding_approach = 1;
|
||||
|
||||
db_precode = db_coding_approach || db_channel_approach;
|
||||
end
|
||||
|
||||
|
||||
|
||||
%%%%% SET Voltages %%%%%%
|
||||
dcs = DC_supply("active",[1,1],"voltage",[v_bias, 9]);
|
||||
dcs.set("voltage",[v_bias, 9]);
|
||||
|
||||
%%%%% SET Attenuator %%%%%%
|
||||
voa = OptAtten("active",[1,2,1,1],"value",[0,pd_in_set,0,i_atten],"wavelength",[1310,1310,1310,1310]);
|
||||
voa.set('active',[1,2,1,1],'value',[0,pd_in_set,0,i_atten]);
|
||||
% voa.readvals();
|
||||
|
||||
%%%%% Construct AWG and Scope Modules %%%%%%
|
||||
SCP = ScopeKeysight("model","DSAZ634A",'autoscale',1,"fadc",'GSa_160',"channel",[1,0],"recordLen",2000000,"removeDC",1);
|
||||
AWG = AwgKeysight("model","M8196A","fdac",fdac,"scaletodac",[1,1,1,1],"skews",[0,0,0,0],"voltages",[0,0,0,awg_vpp]);
|
||||
A2S = Awg2Scope(AWG,SCP,[0,0,0,1]);
|
||||
|
||||
%%%%% Symbol Generation %%%%%%
|
||||
Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rrcalpha);
|
||||
|
||||
[Digi_sig,Symbols,Bits] = PAMsource("fsym",fsym,"M",M,"order",19,"useprbs",1,...
|
||||
"fs_out",fdac,"applyclipping",0,"clipfactor",1.7,...
|
||||
"applypulseform",0,"pulseformer",Pform,"randkey",pn_key,...
|
||||
"db_precode",db_precode,...
|
||||
"mrds_code",usemrds,"mrds_blocklength",512,"db_encode",db_coding_approach).process();
|
||||
|
||||
%%%%% Precompensation Routine %%%%%%
|
||||
if precomp_mode == 1 % measure channel
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
|
||||
Digi_sig = freqresp.buildOFDM();
|
||||
elseif precomp_mode == 2 % apply precomp
|
||||
freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
|
||||
Digi_sig = freqresp.precomp(Digi_sig,'maxampdb',precomp_amp_max,'loadPath',precomp_path,'fileName',precomp_fn);
|
||||
end
|
||||
|
||||
%%%%% Resample to DAC rate %%%%%%
|
||||
Digi_sig = Digi_sig.resample("fs_out",AWG.fdac);
|
||||
|
||||
|
||||
%%%%% Plot and Save Routine 1 %%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
Digi_sig.spectrum("displayname","Normal Tx","fignum",10);
|
||||
|
||||
if loopcnt == 1
|
||||
save([folderpath,[experiment_name,'bits'],loop_name],"Bits");
|
||||
save([folderpath,[experiment_name,'symbols'],loop_name],"Symbols");
|
||||
end
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
%%%%% AWG --> Scope %%%%%%
|
||||
[~,~,~,Scpe_sig] = A2S.process("signal4",Digi_sig);
|
||||
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
Scpe_sig.spectrum("displayname","Scope PSD","fignum",20);
|
||||
|
||||
% Scpe_sig.plot("displayname","Scope raw signal","fignum",25);
|
||||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
|
||||
%%%%%% Sample to 2x fsym %%%%%%
|
||||
Scpe_sig = Scpe_sig.resample("fs_in",160e9,"fs_out",2*fsym);
|
||||
|
||||
%%%%% Precompensation Routine %%%%%%
|
||||
if precomp_mode == 1
|
||||
freqresp.estimate(Scpe_sig,"save",true,"savePath",precomp_path,"fileName",precomp_fn);
|
||||
freqresp.plot();
|
||||
end
|
||||
|
||||
%%%%%% Sync Rx signal with reference %%%%%%
|
||||
[Scpe_sig,S] = Scpe_sig.tsynch("reference",Symbols,"fs_ref",fsym);
|
||||
|
||||
%%%%%% SNR CHEAT - Avg. the measured signal occurences %%%%%%
|
||||
average_signals = 0;
|
||||
if average_signals
|
||||
scope_mean = zeros(size(S{1}.signal));
|
||||
for n=1:numel(S)
|
||||
scope_mean = scope_mean + S{n}.signal;
|
||||
end
|
||||
scope_mean = scope_mean ./ n;
|
||||
Scpe_sig.signal = scope_mean;
|
||||
end
|
||||
|
||||
%%%%% Plot and Save Routine 2 %%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
save([folderpath,experiment_name,'rx_signal',loop_name],"S");
|
||||
% Scpe_sig.eye(fsym,M,"fignum",40,"displayname",' after Scope');
|
||||
|
||||
voa.readvals();
|
||||
|
||||
pd_in = voa.power_state(2);
|
||||
s_pow = voa.power_state(3);
|
||||
i_pow = voa.power_state(4);
|
||||
|
||||
sir = s_pow- i_pow;
|
||||
|
||||
%%%%% EQUALIZE %%%%%%
|
||||
Eq = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",50,"sps",2,"decide",0);
|
||||
Eq = VNLE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",[0.0004 0.0005 0.0006],"mu_tr",0,"order",[50,7,7],"sps",2,"decide",1);
|
||||
Eq = EQ("Ne",[50,7,7],"Nb",[0,0,0],"training_length",4096*2,"training_loops",5,"dd_loops",5,"K",2,"DCmu",0.0,"DDmu",[0.0004 0.0004 0.0004 0.0004 ],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);
|
||||
|
||||
if ffe_only %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber),'| SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
if 0
|
||||
figure(53);
|
||||
constellation = unique(Symbols.signal);
|
||||
received = NaN(numel(constellation),length(Symbols));
|
||||
for lvl = 1:numel(constellation)
|
||||
received(lvl,Symbols.signal==constellation(lvl)) = EQ_sig.signal(Symbols.signal==constellation(lvl));
|
||||
hold on
|
||||
histogram(received(lvl,:),1000,"EdgeAlpha",0);
|
||||
end
|
||||
end
|
||||
|
||||
elseif postfilter_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig] = Eq.process(Scpe_sig,Symbols);
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
Noi = EQ_sig-Symbols;
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber_ffe_only,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
nc = 2;
|
||||
burg_coeff = arburg(Noi.signal,nc);
|
||||
|
||||
EQ_sig = EQ_sig.filter(burg_coeff,1);
|
||||
|
||||
if 1
|
||||
Noi.spectrum('displayname','Noise PSD','fignum',123)
|
||||
[h,w] = freqz(1,burg_coeff,length(Noi),"whole",Noi.fs);
|
||||
h = h/max(abs(h));
|
||||
hold on
|
||||
w_ = (w - Noi.fs/2);
|
||||
plot(w_.*1e-9,20*log10(fftshift(h)),'DisplayName',['', num2str(nc), ' coefficients for burg alg.']);
|
||||
end
|
||||
|
||||
if 0
|
||||
figure(53);
|
||||
constellation = unique(Symbols.signal);
|
||||
received = NaN(numel(constellation),length(Symbols));
|
||||
for lvl = 1:numel(constellation)
|
||||
received(lvl,Symbols.signal==constellation(lvl)) = EQ_sig.signal(Symbols.signal==constellation(lvl));
|
||||
hold on
|
||||
histogram(received(lvl,:),1000,"EdgeAlpha",0);
|
||||
end
|
||||
end
|
||||
|
||||
EQ_sig = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp(['FFE: ',sprintf('%.1E',ber_ffe_only),' -> PF -> MLSE: ',sprintf('%.1E',ber),' dB | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_channel_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Duobinary().encode(Symbols));
|
||||
|
||||
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
|
||||
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
disp([' DB Precode -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
elseif db_coding_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||||
|
||||
[EQ_sig, Noi] = Eq.process(Scpe_sig,Symbols);
|
||||
EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
|
||||
EQ_sig = Duobinary().decode(EQ_sig);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
% EQ_sig.plot("fignum",50,"displayname",'After EQ');
|
||||
|
||||
disp([' DB Precode -> DB Code -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | PD_in: ',num2str(pd_in),' dBm']);
|
||||
|
||||
end
|
||||
|
||||
end
|
||||
|
||||
wh.addValueToStorage(ber,'ber',v_bias,awg_vpp,eq_mode,i_atten);
|
||||
wh.addValueToStorage(pd_in,'pd_in',v_bias,awg_vpp,eq_mode,i_atten);
|
||||
wh.addValueToStorage(Rx_bits,'signals',v_bias,awg_vpp,eq_mode,i_atten);
|
||||
wh.addValueToStorage(sir,'sir',v_bias,awg_vpp,eq_mode,i_atten);
|
||||
wh.addValueToStorage(s_pow,'s_pow',v_bias,awg_vpp,eq_mode,i_atten);
|
||||
wh.addValueToStorage(i_pow,'i_pow',v_bias,awg_vpp,eq_mode,i_atten);
|
||||
wh.addValueToStorage(M,'m',v_bias,awg_vpp,eq_mode,i_atten);
|
||||
|
||||
showCurrentMeasurement('BER', ber, 'PD in', pd_in, 'PAM',M, 'Vbias', v_bias, 'AWG Vpp', awg_vpp, 'Precomp MaxAmp',precomp_amp_max);
|
||||
|
||||
iterationTimes(loopcnt) = toc(iterationStartTime);
|
||||
averageTimePerIteration = mean(iterationTimes(1:loopcnt));
|
||||
estimatedTotalTime = averageTimePerIteration * looptotal;
|
||||
estimatedTimeRemaining = estimatedTotalTime - sum(iterationTimes(1:loopcnt));
|
||||
%autoArrangeFigures(3,3,2);
|
||||
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
close(hWaitbar);
|
||||
|
||||
wh.save([folderpath,experiment_name,'wh']);
|
||||
|
||||
|
||||
cols = linspecer(8);
|
||||
|
||||
i_atten_vals = wh.parameter.i_atten.values;
|
||||
v_bias = wh.parameter.vbias.values(1);
|
||||
awg_vpp = wh.parameter.awg_vpp.values(1);
|
||||
eq_mode = wh.parameter.eq_mode.values(1);
|
||||
|
||||
bers = wh.getStoValue('ber',v_bias,awg_vpp,eq_mode,i_atten_vals);
|
||||
|
||||
figure(90);
|
||||
hold on; % Retain the plot so new points can be added without complete redraw
|
||||
|
||||
% Plot the data and get the line handle
|
||||
hLine = plot(i_atten_vals, bers, "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", experiment_name);
|
||||
|
||||
% Customize the data tips
|
||||
% Set labels for existing data tip rows
|
||||
hLine.DataTipTemplate.DataTipRows(1).Label = 'Fsym';
|
||||
hLine.DataTipTemplate.DataTipRows(2).Label = 'BER';
|
||||
hLine.DataTipTemplate.DataTipRows(2).Format = '%.2e'; % Format BER as "3e-4"
|
||||
|
||||
|
||||
% Continue with the rest of your plot settings
|
||||
yline(3.8e-3, 'DisplayName', 'HD-FEC', 'LineStyle', '--', 'HandleVisibility', 'off');
|
||||
xlabel('Signal to Interference Ratio in dB');
|
||||
ylabel('Bit Error Rate (BER)');
|
||||
title('Bit Error Rate vs. SIR');
|
||||
set(gca, 'yscale', 'log');
|
||||
set(gca, 'Box', 'on');
|
||||
grid on;
|
||||
grid minor;
|
||||
legend('Interpreter', 'none');
|
||||
|
||||
|
||||
autoArrangeFigures(3,3,2)
|
||||
|
||||
disp("measurement done")
|
||||
@@ -1,13 +1,25 @@
|
||||
|
||||
function BER = runEQ(Eq_class,Scpe_sig,Symbols,Bits,M)
|
||||
|
||||
[EQ_sig] = Eq_class.process(Scpe_sig,Symbols);
|
||||
|
||||
error = EQ_sig-Symbols;
|
||||
error.spectrum("displayname",['Error PSD after: ',inputname(1),' '],'fignum',564);
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
|
||||
[~,errors_bm,BER,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
function [BER,EQ_sig,Noi] = runEQ(Eq_class,Scpe_sig,Symbols,Bits,M)
|
||||
|
||||
[EQ_sig] = Eq_class.process(Scpe_sig,Symbols);
|
||||
|
||||
Noi = EQ_sig-Symbols;
|
||||
|
||||
|
||||
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
|
||||
|
||||
[~,errors_bm,BER,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
|
||||
|
||||
if 0
|
||||
figure();
|
||||
constellation = unique(Symbols.signal);
|
||||
received = NaN(numel(constellation),length(Symbols));
|
||||
for lvl = 1:numel(constellation)
|
||||
received(lvl,Symbols.signal==constellation(lvl)) = EQ_sig.signal(Symbols.signal==constellation(lvl));
|
||||
hold on
|
||||
histogram(received(lvl,:),1000,"EdgeAlpha",0);
|
||||
end
|
||||
|
||||
Noi.spectrum("displayname",['Error PSD after: ',inputname(1),' '],'fignum',564);
|
||||
end
|
||||
end
|
||||
88
projects/Lab_2024/sweep_laser_vs_power.m
Normal file
88
projects/Lab_2024/sweep_laser_vs_power.m
Normal file
@@ -0,0 +1,88 @@
|
||||
|
||||
% 1) Establish connection to laser
|
||||
o = serialport("COM9",9600); %per USB angeschlossen
|
||||
configureTerminator(o,"CR")
|
||||
writeline(o,"*IDN?");
|
||||
wait(1)
|
||||
if o.NumBytesAvailable ~= 0
|
||||
disp(['Laser Mainframe: ',readline(o)]);
|
||||
else
|
||||
error('Keine Verbindung zum Mainframe mglich?')
|
||||
clear o
|
||||
|
||||
end
|
||||
|
||||
% 2) connect to device
|
||||
v = visa('keysight', 'TCPIP0::134.245.243.248::inst0::INSTR');
|
||||
fopen(v);
|
||||
fprintf(v, '*IDN?;');
|
||||
disp(['Powermeter: ' fscanf(v)]);
|
||||
|
||||
% Define channels
|
||||
laser_channel = 7;
|
||||
powermeter_slot = 1;
|
||||
l = 1300:0.1:1320;
|
||||
|
||||
% turn on the laser
|
||||
writeline(o,['CH',num2str(laser_channel),':ENABLE']);
|
||||
wait(0.2)
|
||||
current_wavelen = readline(o);
|
||||
|
||||
clear power
|
||||
clear lambda
|
||||
|
||||
for n = 1:length(l)
|
||||
|
||||
% 2 change wavelength in laser slot
|
||||
command = string(['CH',num2str(laser_channel),':L=',num2str(l(n))]);
|
||||
writeline(o,command);
|
||||
wait(0.5);
|
||||
readline(o);
|
||||
|
||||
% query and check wavelength
|
||||
writeline(o,['CH',num2str(laser_channel),':L?']);
|
||||
wait(0.2)
|
||||
current_wavelen = readline(o);
|
||||
current_wavelen = str2double(strrep(regexp(current_wavelen,'([CH7:L=])+([\d]*)+([.])+([\d]*)','match'),'CH7:L=',''));
|
||||
|
||||
if l(n) ~= current_wavelen
|
||||
clear o
|
||||
fclose(v);
|
||||
delete(v);
|
||||
clear v
|
||||
error('Wellenlnge wurde nicht bernommen');
|
||||
end
|
||||
|
||||
wait(0.75);
|
||||
|
||||
% get current power in slot
|
||||
slot = 1;
|
||||
fprintf(v, [':READ' num2str(slot) ':POW?']);
|
||||
power(n) = sscanf(fscanf(v),'%f');
|
||||
lambda(n) = current_wavelen;
|
||||
|
||||
if mod(n,10)==1
|
||||
disp(['Measured ',num2str(power(n)),' dBm at ',num2str(lambda(n)),' nm'])
|
||||
end
|
||||
end
|
||||
|
||||
figure(2)
|
||||
hold on
|
||||
plot(lambda,power,'Marker','*');
|
||||
xlabel('Wavelngth in nm')
|
||||
ylabel('Power in dBm')
|
||||
grid minor
|
||||
|
||||
figure(211)
|
||||
hold on
|
||||
plot(lambda,10.^(power/10),'Marker','*');
|
||||
xlabel('Wavelngth in nm')
|
||||
ylabel('Power in mW')
|
||||
grid minor
|
||||
|
||||
%close the serial connection
|
||||
|
||||
clear o
|
||||
fclose(v);
|
||||
delete(v);
|
||||
clear v
|
||||
Reference in New Issue
Block a user