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measurement state

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This commit is contained in:
Silas Labor Zizou
2024-10-29 14:38:22 +01:00
parent 99fe2ca106
commit cf4e0f2b12
14 changed files with 1469 additions and 319 deletions
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4
Classes/00_signals/Signal.m
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@@ -27,7 +27,7 @@ classdef Signal
[~,obj.gitSHA] = system('git rev-parse HEAD'); [~,obj.gitSHA] = system('git rev-parse HEAD');
[~,obj.gitStatus] = system('git status --porcelain'); [~,obj.gitStatus] = system('git status --porcelain');
[~,obj.gitPatch] = system('git diff'); % [~,obj.gitPatch] = system('git diff');
%%% Stuff for Logbook %%% %%% Stuff for Logbook %%%
SignalType = []; SignalType = [];
@@ -344,7 +344,7 @@ classdef Signal
% spectrum_plot(obj.signal,options.fsamp,options.figurename,options.displayname); % spectrum_plot(obj.signal,options.fsamp,options.figurename,options.displayname);
N = 2^(nextpow2(length(obj.signal))-8); N = 2^(nextpow2(length(obj.signal))-10);
if options.normalizeToNyquist==0 if options.normalizeToNyquist==0
[p_lin,w] = pwelch(obj.signal,hanning(N),N/2,N,obj.fs,"centered","power","mean"); [p_lin,w] = pwelch(obj.signal,hanning(N),N/2,N,obj.fs,"centered","power","mean");

3
Classes/01_transmit/ChannelFreqResp.m
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@@ -241,10 +241,11 @@ classdef ChannelFreqResp < handle
xlim([0.2 .5*max(obj.faxis)*1e-9]); grid on; xlim([0.2 .5*max(obj.faxis)*1e-9]); grid on;
%%% plot for publication %%% plot for publication
figure(20);hold on;box on;title('Magnitude Freq. Response'); figure(30);hold on;box on;title('Magnitude Freq. Response');
% xlim([0 max(obj.faxis)*1e-9]); % xlim([0 max(obj.faxis)*1e-9]);
% ylim([-20, 10]); % ylim([-20, 10]);
fax = obj.faxis - obj.f_ref/2; fax = obj.faxis - obj.f_ref/2;
Havg = Havg ./ max(abs(Havg));
plot(fax/1e9, 20*log10(abs(fftshift(Havg)))+7,'LineWidth',2); plot(fax/1e9, 20*log10(abs(fftshift(Havg)))+7,'LineWidth',2);
grid on; grid on;

4
Classes/04_DSP/Coding/Duobinary.m
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@@ -164,11 +164,11 @@ classdef Duobinary
elseif I == 11 elseif I == 11
%todo %todo
data = data .* sqrt(5.8); data = data .* sqrt(5.8);
warning('Check if PAM16 implementation, mapping and scaling is correct!') warning('Check db decode implementation, mapping and scaling is correct!')
elseif I == 15 elseif I == 15
data = data .* sqrt(10.5); data = data .* sqrt(10.5);
elseif I == 16 elseif I == 16
warning('Check if PAM16 implementation, mapping and scaling is correct!') warning('Check db decode implementation, mapping and scaling is correct!')
end end
data = round(data); data = round(data);

2
Classes/05_Lab/Exfo_laser.m
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@@ -52,7 +52,7 @@ classdef Exfo_laser < handle
if obj.safety_mode if obj.safety_mode
warning("Safety_mode ON: Display all information. Ask when switching laser. Turn safety_mode off in class instance or during initialization Exfo_laser(...,'safety_mode',0)"); warning("Safety_mode ON: Display all information. Ask when switching laser. Turn safety_mode off in class instance or during initialization Exfo_laser(...,'safety_mode',0)");
else else
warning("safety_mode OFF: EVERYTHING IS EXECUTED WITHOUT ASKING :-) BE SHURE WHAT YOU DO"); warning("safety_mode OFF: EVERYTHING IS EXECUTED WITHOUT ASKING :-) BE SURE WHAT YOU DO");
end end
end end

29
Classes/05_Lab/OptAtten.m
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@@ -53,8 +53,11 @@ classdef OptAtten < handle
try try
%connect to device %connect to device
v = visadev('TCPIP::134.245.243.248::INSTR'); v = visadev('TCPIP::134.245.243.248::INSTR');
debug = 0; debug = 0;
if debug if debug
disp(['Connected to Instrument: ',char(v.Vendor),' ',char(v.Model),' SerNo:',char(v.SerialNumber)]); disp(['Connected to Instrument: ',char(v.Vendor),' ',char(v.Model),' SerNo:',char(v.SerialNumber)]);
@@ -258,11 +261,6 @@ classdef OptAtten < handle
answer = sscanf(line,'%f'); answer = sscanf(line,'%f');
obj.power_state(cnt) = answer; obj.power_state(cnt) = answer;
writeline(v, [':READ' num2str(s) ':POW?']);
line = readline(v);
answer = sscanf(line,'%f');
obj.power_state(cnt) = answer;
writeline(v, [':INP' num2str(s) ':ATT?']); writeline(v, [':INP' num2str(s) ':ATT?']);
line = readline(v); line = readline(v);
answer = sscanf(line,'%f'); answer = sscanf(line,'%f');
@@ -273,7 +271,7 @@ classdef OptAtten < handle
answer = sscanf(line,'%f'); answer = sscanf(line,'%f');
obj.wavelength_state(cnt) = answer; obj.wavelength_state(cnt) = answer;
writeline(v, [':INP' num2str(s) ':WAV?']); writeline(v, [':INP' num2str(s) ':ATT:SPE?']);
line = readline(v); line = readline(v);
answer = sscanf(line,'%f'); answer = sscanf(line,'%f');
obj.speed_state(cnt) = answer; obj.speed_state(cnt) = answer;
@@ -294,6 +292,25 @@ classdef OptAtten < handle
end end
end end
function [p1,p2,p3,p4]=readPower(obj)
v = visadev('TCPIP::134.245.243.248::INSTR');
cnt = 1;
for s = 1:2:7
writeline(v, [':READ' num2str(s) ':POW?']);
line = readline(v);
answer = sscanf(line,'%f');
obj.power_state(cnt) = answer;
cnt = cnt+1;
end
p1 = obj.power_state(1);
p2 = obj.power_state(2);
p3 = obj.power_state(3);
p4 = obj.power_state(4);
end
end end
end end

7
Classes/05_Lab/ScopeKeysight.m
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@@ -131,7 +131,7 @@ classdef ScopeKeysight
%use this to finetune autoscaling - VERY helpful %use this to finetune autoscaling - VERY helpful
% higher value leads to higher scaling % higher value leads to higher scaling
fintunefactor = 1.4; % within [1,...,2] fintunefactor = 1.5; % within [1,...,2]
obj.writeNcheck(v,sprintf(':CHANnel%u:RANGe %.3f',n,range/fintunefactor)); obj.writeNcheck(v,sprintf(':CHANnel%u:RANGe %.3f',n,range/fintunefactor));
end end
else else
@@ -141,6 +141,8 @@ classdef ScopeKeysight
% After Autoscale, let the user adjust the scope scaling... % After Autoscale, let the user adjust the scope scaling...
% "options.waitUntilClick" was a shit name but now this is it :-) % "options.waitUntilClick" was a shit name but now this is it :-)
if options.waitUntilClick if options.waitUntilClick
if 0
% Create a dialog box with the desired text % Create a dialog box with the desired text
d = dialog('Name', 'Scale Scope then press continue', 'Position', [300, 300, 300, 180]); d = dialog('Name', 'Scale Scope then press continue', 'Position', [300, 300, 300, 180]);
@@ -160,6 +162,9 @@ classdef ScopeKeysight
% Pause execution until the dialog box is closed % Pause execution until the dialog box is closed
uiwait(d); uiwait(d);
else
holdAndShowValue
end
end end
if obj.extRef if obj.extRef

36
Classes/Warehouse_class/classes/DataStorage.m
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@@ -125,23 +125,49 @@ classdef DataStorage < handle
lin_idx = obj.getIndicesByPhys(varargin); lin_idx = obj.getIndicesByPhys(varargin);
errcnt = 0; errcnt = 0;
for i=1:numel(lin_idx) for i=1:numel(lin_idx)
try
tmp = obj.sto.(storageVarName){lin_idx(i)}; tmp = obj.sto.(storageVarName){lin_idx(i)};
if ~isempty(tmp) if ~isempty(tmp)
if isa(tmp,'Signal')
if isa(tmp,'Signal') || isa(tmp,'struct') || isa(tmp,'Exfo_laser')
if i == 1 if i == 1
value = {}; value = {};
end end
value{i} = tmp ; value{i} = tmp ;
elseif isa(tmp,'cell') elseif isa(tmp,'cell')
if isa(tmp{1},'Signal') if isa(tmp{1},'Signal')
if i == 1 if i == 1
value = {}; value = {};
end end
value{i} = tmp{1} ; value{i} = tmp{1} ;
end
else else
value{i} = tmp{1} ;
end
else
try
value(i,:) = tmp ; value(i,:) = tmp ;
catch
% value(i,:) = tmp(1:size(value,2)) ;
if size(value,2) < size(tmp,2)
diff = size(tmp,2) - size(value,2);
value(:,end+1:end+diff) = NaN(size(value,1),diff);
value(i,:) = tmp ;
elseif size(value,2) > size(tmp,2)
diff = size(value,2) - size(tmp,2);
tmp(:,end+1:end+diff) = NaN(1,diff);
value(i,:) = tmp ;
end
end
end end
else else
errcnt = errcnt+1; errcnt = errcnt+1;
@@ -166,9 +192,7 @@ classdef DataStorage < handle
% warning([num2str(errcnt),' requested datapoint(s) not in warehouse.']); % warning([num2str(errcnt),' requested datapoint(s) not in warehouse.']);
end end
catch
error('Error in Datastorage: Something happened while looking up in warehouse.')
end
end end
else else
error('Wrong Request using ExampleWarehouse.getStoValue(*parameter set*). Give me all the Parameters! Please!') error('Wrong Request using ExampleWarehouse.getStoValue(*parameter set*). Give me all the Parameters! Please!')

48
Functions/holdAndShowValue.m Normal file
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@@ -0,0 +1,48 @@
function holdAndShowValue()
% Create the UI figure
fig = uifigure('Name', 'Multi-Channel Power Monitor', 'Position', [100 100 600 150]);
% Create labels to display the power values for each channel in a horizontal layout
powerLabels = gobjects(4, 1);
for i = 1:4
powerLabels(i) = uilabel(fig, 'Position', [50 + (i-1)*130, 70, 120, 30], ...
'FontSize', 18, 'HorizontalAlignment', 'center');
powerLabels(i).Text = sprintf('CH %d: Fetching...', i);
end
% Create the "OK" button
okButton = uibutton(fig, 'push', 'Text', 'OK', 'Position', [250 20 100 40], ...
'ButtonPushedFcn', @(src, event) closeWindow());
% Initialize the timer
updateTimer = timer('ExecutionMode', 'fixedRate', 'Period', 1, ...
'TimerFcn', @(src, event) updatePowerValues());
% Start the timer
start(updateTimer);
% Function to close the window and stop the timer
function closeWindow()
stop(updateTimer);
delete(updateTimer);
delete(fig);
end
% Function to fetch and update power values for all channels
function updatePowerValues()
powerValues = fetchPowerValues(); % Replace with your data-fetching function
for i = 1:4
powerLabels(i).Text = sprintf('CH %d: %.2f dBm', i, powerValues(i));
end
end
% Wait until the figure is closed to resume execution
waitfor(fig);
end
% Example function to simulate fetching power values for four channels
function powerValues = fetchPowerValues()
% Replace this with actual code to get the power values from the power meter
[p1,p2,p3,p4] = OptAtten().readPower();
powerValues = [p1,p2,p3,p4];
end

2
Functions/showCurrentMeasurement.m
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@@ -41,7 +41,7 @@ function showCurrentMeasurement(varargin)
for i = 1:length(values) for i = 1:length(values)
varNameLower = names{i}; % Convert variable name to lowercase for case-insensitive comparison varNameLower = names{i}; % Convert variable name to lowercase for case-insensitive comparison
if isnumeric(values{i}) if isnumeric(values{i})
if any(strcmpi(varNameLower, {'ber','mlse','ffe','db'})) if any(contains(varNameLower, {'ber','mlse','ffe','db'}))
% Format 'ber' values in exponential notation with two decimal places % Format 'ber' values in exponential notation with two decimal places
values{i} = sprintf('%.2e', values{i}); values{i} = sprintf('%.2e', values{i});
else else

20
Functions/waitUntilClick.m Normal file
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@@ -0,0 +1,20 @@
function waitUntilClick()
% Create the UI figure
fig = uifigure('Name', 'Pause Execution', 'Position', [100 100 300 150]);
% Create a label to inform the user
uilabel(fig, 'Position', [50 80 200 40], 'Text', 'Click "Continue" to proceed', ...
'FontSize', 14, 'HorizontalAlignment', 'center');
% Create the "Continue" button
continueButton = uibutton(fig, 'push', 'Text', 'Continue', 'Position', [100 20 100 40], ...
'ButtonPushedFcn', @(src, event) closeWindow());
% Function to close the window when "Continue" is clicked
function closeWindow()
delete(fig); % Close the figure window
end
% Wait until the figure is closed to resume execution
waitfor(fig);
end

137
projects/HighSpeedExperiment_2024/bias_evaluation.m
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@@ -1,19 +1,17 @@
% filename = "C:\Users\sioe\Documents\High_Speed_Measurement_2024\bias_testing\PAM4_b2b_bias_sweep_20241023_130342_wh.mat"; filename = "C:\Users\sioe\Documents\High_Speed_Measurement_2024\bias_5km\PAMX_5km_20241025_204334_wh.mat";
%
% a = load(filename); a = load(filename);
% wh = a.obj; wh = a.obj;
v_bias_vals = wh.parameter.vbias.values; v_bias_vals = wh.parameter.vbias.values;
awg_vpp_vals = wh.parameter.awg_vpp.values; awg_vpp_vals = wh.parameter.awg_vpp.values;
precomp_amp_max_vals = wh.parameter.precomp_amp_max.values; precomp_amp_max_vals = wh.parameter.precomp_amp_max.values;
rop_atten_vals = wh.parameter.rop_atten.values; rop_atten_vals = wh.parameter.rop_atten.values;
PAM = wh.parameter.M.values(1); lambda_vals = wh.parameter.lambda.values;
M_vals = wh.parameter.M.values;
m = wh.getStoValue('m',v_bias_vals(1),awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),PAM); fsym_vals = [168e9, 144e9, 120e9];
ber_ffe = []; ber_ffe = [];
ber_mlse = []; ber_mlse = [];
@@ -22,20 +20,106 @@ pd_in_measured= [];
rop_measured = []; rop_measured = [];
cnt = 0; cnt = 0;
for PAM = wh.parameter.M.values
cnt = cnt+1; figure(252)
ber_ffe(cnt,:) = wh.getStoValue('ber_ffe',v_bias_vals,awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),PAM)'; clf
ber_mlse(cnt,:) = wh.getStoValue('ber_mlse',v_bias_vals,awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),PAM); hold on
rop_measured(cnt,:) = wh.getStoValue('rop',v_bias_vals,awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),PAM); cols = cbrewer2('Set1',3);
pd_in_measured(cnt,:) = wh.getStoValue('pd_in',v_bias_vals,awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),PAM); for l = 1:numel(lambda_vals)
for m = 1:numel(M_vals)
ber_ffe = wh.getStoValue('ber_ffe',v_bias_vals,awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),M_vals(m),lambda_vals(l));
ber = wh.getStoValue('ber_collect',v_bias_vals,awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),M_vals(m),lambda_vals(l));
exfo = wh.getStoValue('exfo',v_bias_vals,awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),M_vals(m),lambda_vals(l));
for e = 1:numel(exfo)
laser_pow(e) = exfo{e}.cur_power;
end
rop_measured = wh.getStoValue('rop',v_bias_vals,awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),M_vals(m),lambda_vals(l));
pd_in_measured(l,m,:) = wh.getStoValue('pd_in',v_bias_vals,awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),M_vals(m),lambda_vals(l));
rx_logbook = wh.getStoValue('rx_logbook',v_bias_vals(1),awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),M_vals(1),lambda_vals(1));
subplot(1,3,l)
hold on
a = scatter(v_bias_vals,min(ber,[],2),40,'LineWidth',2,'Marker','.','DisplayName',['PAM ',num2str(M_vals(m))],'MarkerEdgeColor',cols(m,:));
title([num2str(lambda_vals(l)),'nm'])
a.DataTipTemplate.DataTipRows(1).Label = 'Vbias';
a.DataTipTemplate.DataTipRows(2).Label = 'BER';
a.DataTipTemplate.DataTipRows(2).Format ='%.1e';
a.DataTipTemplate.DataTipRows(3).Label = 'P_{out}';
a.DataTipTemplate.DataTipRows(3).Value = rop_measured;
a.DataTipTemplate.DataTipRows(3).Format = ['auto'];
a.DataTipTemplate.DataTipRows(4).Label = 'Baudr';
a.DataTipTemplate.DataTipRows(4).Value = repmat(fsym_vals(m).*1e-9,size(ber_ffe));
a.DataTipTemplate.DataTipRows(4).Format = ['%d',' GBd'];
a.DataTipTemplate.DataTipRows(5).Label = 'L_{out}';
a.DataTipTemplate.DataTipRows(5).Value = laser_pow;
a.DataTipTemplate.DataTipRows(5).Format = ['auto'];
% Polynomial fit (e.g., second-order polynomial)
[woutliers,n] = rmoutliers( min(ber,[],2) );
p = polyfit( v_bias_vals(~n), log10(woutliers), 4); % Adjust order as needed
BER_fit = polyval(p, v_bias_vals);
% Plot the fitted curve
plot(v_bias_vals, 10.^(BER_fit), '-r', 'LineWidth', 1.5,'Color',cols(m,:),'HandleVisibility','off');
% Continue with the rest of your plot settings
yline(3.8e-3, 'DisplayName', 'HD-FEC', 'LineStyle', '--', 'HandleVisibility', 'off');
xlabel('Bias Voltage');
ylabel('Bit Error Rate (BER)');
sgtitle('Bit Error Rate vs. ROP');
set(gca, 'yscale', 'log');
set(gca, 'Box', 'on');
grid on;
grid minor;
legend('Interpreter', 'none');
ylim([1e-3,0.5]);
xlim([-16, -2]);
ylim([1e-3,0.5]);
xlim([min(v_bias_vals) max(v_bias_vals)]);
end
end end
filename = "C:\Users\sioe\Documents\High_Speed_Measurement_2024\bias_testing_and_b2b\PAM4_b2b_bias_sweep_20241023_191202_wh_BB_BIAS_FINAL.mat";
a = load(filename);
wh = a.obj;
v_bias_vals = wh.parameter.vbias.values;
awg_vpp_vals = wh.parameter.awg_vpp.values;
precomp_amp_max_vals = wh.parameter.precomp_amp_max.values;
rop_atten_vals = wh.parameter.rop_atten.values;
M_vals = wh.parameter.M.values;
ber_ffe = [];
ber_mlse = [];
rop_measured = [];
pd_in_measured = [];
figure(2024) figure(2024)
for i = 1:3 for i = 1:3
ber_ffe(i,:) = wh.getStoValue('ber_ffe',v_bias_vals,awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),M_vals(i));
rop_measured(i,:) = wh.getStoValue('rop',v_bias_vals,awg_vpp_vals(1),precomp_amp_max_vals(1),rop_atten_vals(1),M_vals(i));
[bestber,bestindex] = min(ber_ffe(i,:),[],'all'); [bestber,bestindex] = min(ber_ffe(i,:),[],'all');
[awg_pos,v_bias_pos]=ind2sub(size(ber_ffe(i,:)),bestindex); [awg_pos,v_bias_pos]=ind2sub(size(ber_ffe(i,:)),bestindex);
bestawgvpp=awg_vpp_vals(awg_pos); bestawgvpp=awg_vpp_vals(awg_pos);
@@ -43,24 +127,35 @@ for i = 1:3
disp(['Best Vpp: ',num2str(bestvbias),' V; Best Vpp AWG: ',num2str(bestawgvpp),' V' ]); disp(['Best Vpp: ',num2str(bestvbias),' V; Best Vpp AWG: ',num2str(bestawgvpp),' V' ]);
% Polynomial fit (e.g., second-order polynomial)
[woutliers,n] = rmoutliers( ber_ffe(i,:) );
p = polyfit( v_bias_vals(~n), log10(woutliers), 8); % Adjust order as needed
BER_fit = polyval(p, v_bias_vals);
% Plot the fitted curve
plot(v_bias_vals, 10.^(BER_fit), '-r', 'LineWidth', 1.5,'Color',cols(i,:),'HandleVisibility','off');
hold on hold on
a = scatter(rop_measured(i,:),ber_ffe(i,:),'Marker','+','DisplayName',['PAM ',num2str(wh.parameter.M.values(i))]); a = scatter(v_bias_vals,ber_ffe(i,:),'Marker','+','DisplayName',['PAM ',num2str(wh.parameter.M.values(i))],'MarkerEdgeColor',cols(i,:));
a.DataTipTemplate.DataTipRows(1).Label = 'P_{out}'; a.DataTipTemplate.DataTipRows(1).Label = 'Vbias';
a.DataTipTemplate.DataTipRows(2).Label = 'BER'; a.DataTipTemplate.DataTipRows(2).Label = 'BER';
a.DataTipTemplate.DataTipRows(2).Format ='%.1e'; a.DataTipTemplate.DataTipRows(2).Format ='%.1e';
a.DataTipTemplate.DataTipRows(3).Label = 'Vbias'; a.DataTipTemplate.DataTipRows(3).Label = 'P_{out}';
a.DataTipTemplate.DataTipRows(3).Value = v_bias_vals; a.DataTipTemplate.DataTipRows(3).Value = rop_measured(i,:);
a.DataTipTemplate.DataTipRows(3).Format = 'auto'; a.DataTipTemplate.DataTipRows(3).Format = 'auto';
end end
% Continue with the rest of your plot settings % Continue with the rest of your plot settings
yline(3.8e-3, 'DisplayName', 'HD-FEC', 'LineStyle', '--', 'HandleVisibility', 'off'); yline(3.8e-3, 'DisplayName', 'HD-FEC', 'LineStyle', '--', 'HandleVisibility', 'off');
xlabel('Measured MZM Output Power (dBm)'); xlabel('Bias Voltage');
ylabel('Bit Error Rate (BER)'); ylabel('Bit Error Rate (BER)');
title('Bit Error Rate vs. ROP'); title('Bit Error Rate vs. ROP | MI->DO | B2B');
set(gca, 'yscale', 'log'); set(gca, 'yscale', 'log');
set(gca, 'Box', 'on'); set(gca, 'Box', 'on');
grid on; grid on;
grid minor; grid minor;
legend('Interpreter', 'none'); legend('Interpreter', 'none');
ylim([1e-4,0.5]);
xlim([1.6 3.2]);

221
projects/HighSpeedExperiment_2024/bias_optimization.m
View File

@@ -5,9 +5,9 @@ currentTime = datetime('now', 'Format', 'yyyyMMdd_HHmmss');
timeStr = char(currentTime); timeStr = char(currentTime);
experiment_name = [experiment_name, timeStr]; experiment_name = [experiment_name, timeStr];
ffe_only = 1; ffe_only = 0;
postfilter_approach = 0; postfilter_approach = 0;
db_channel_approach = 0; db_channel_approach = 1;
db_coding_approach = 0; db_coding_approach = 0;
db_precode = db_coding_approach || db_channel_approach; db_precode = db_coding_approach || db_channel_approach;
@@ -15,19 +15,20 @@ db_precode = db_coding_approach || db_channel_approach;
%%% SIR Sweep for MPI Experiment %%% %%% SIR Sweep for MPI Experiment %%%
params = struct; params = struct;
params.vbias = [1.7:0.02:3.2]; % PAM6=2.3V %PAM8=2.68V % params.vbias = [1.7:0.02:3.2]; % PAM6=2.3V %PAM8=2.68V
params.awg_vpp = [2.7];
params.precomp_amp_max = [5];
params.rop_atten = [0];
params.M = [4,6,8];
params.lambda = [1292,1310,1327]; %calcWavelengthPlan(16, 400e9 , 1310);
% params.vbias = [2.23]; % PAM6=2.3V %PAM8=2.68V
% params.awg_vpp = [2.7]; % params.awg_vpp = [2.7];
% params.precomp_amp_max = [5]; % params.precomp_amp_max = [5];
% params.rop_atten = [0]; % params.rop_atten = [0];
% params.M = [6]; % params.M = [4,6,8];
% params.lambda = [1310]; %calcWavelengthPlan(16, 400e9 , 1310); % params.lambda = [1293,1310,1327.4]; %calcWavelengthPlan(16, 400e9 , 1310);
params.vbias = [2.3]; %PAM4=2.3 V PAM6=2.3V %PAM8=2.6V
params.awg_vpp = [2.7];
params.precomp_amp_max = [-50];
params.rop_atten = [0];
params.M = [4];
params.lambda = [1310]; %calcWavelengthPlan(16, 400e9 , 1310);
params.rcalpha = [0.05];
wh = DataStorage(params); wh = DataStorage(params);
@@ -39,14 +40,17 @@ wh.addStorage("pd_in");
wh.addStorage("rop"); wh.addStorage("rop");
wh.addStorage("m"); wh.addStorage("m");
wh.addStorage("rx_logbook"); wh.addStorage("rx_logbook");
wh.addStorage("dcs");
wh.addStorage("pdfa");
wh.addStorage("exfo");
precomp_path = "C:\Users\sioe\Documents\High_Speed_Measurement_2024\precomp\"; precomp_path = "C:\Users\sioe\Documents\High_Speed_Measurement_2024\precomp\";
precomp_fn = "lab_high_speed"; precomp_fn = "lab_high_speed";
precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
precomp_amp_max = 4; precomp_amp_max = -34;
random_key = 2; random_key = 2;
pd_in_set = 7; pd_in_set = 8;
looptotal = prod(wh.dim); looptotal = prod(wh.dim);
@@ -62,6 +66,7 @@ loopcnt = 0;
estimatedTimeRemaining = 0; estimatedTimeRemaining = 0;
estimatedTotalTime = 0; estimatedTotalTime = 0;
for rcalpha = wh.parameter.rcalpha.values
for lambda = wh.parameter.lambda.values for lambda = wh.parameter.lambda.values
exfo = Exfo_laser("serialport_number",'COM8','mainframe_channel',1,'safety_mode',0); exfo = Exfo_laser("serialport_number",'COM8','mainframe_channel',1,'safety_mode',0);
@@ -76,18 +81,21 @@ for lambda = wh.parameter.lambda.values
% 2) % 2)
exfo.setWavelength(lambda); exfo.setWavelength(lambda);
end
% 3) % 3)
pdfa.enablePDFA(); pdfa.enablePDFA();
% 4) % 4)
pdfa.setPumpLevel(100); pdfa.setPumpLevel(100);
end
% 5) SET to first vbias and wait 30 minutes % 5) SET to first vbias and wait 30 minutes
v_bias_first = wh.parameter.vbias.values(1); v_bias_first = wh.parameter.vbias.values(1);
dcs = DC_supply("active",[1,0],"voltage",[v_bias_first, 0]); dcs = DC_supply("active",[1,0],"voltage",[v_bias_first, 0]);
dcs.set("voltage",[v_bias_first, 0]); dcs.set("voltage",[v_bias_first, 0]);
dcs.readVals();
% pause(30*60); %wait 30 minutes for stable bias % pause(30*60); %wait 30 minutes for stable bias
for v_bias = wh.parameter.vbias.values for v_bias = wh.parameter.vbias.values
@@ -100,13 +108,13 @@ for lambda = wh.parameter.lambda.values
loopcnt = loopcnt+1; loopcnt = loopcnt+1;
if M == 4 if M == 4
fsym = 168e9; fsym = 220e9;
pulsef = 1; pulsef = 0;
elseif M == 6 elseif M == 6
fsym = 144e9; fsym = 180e9;
pulsef = 0; pulsef = 0;
elseif M == 8 elseif M == 8
fsym = 120e9; fsym = 160e9;
pulsef = 0; pulsef = 0;
end end
@@ -119,19 +127,19 @@ for lambda = wh.parameter.lambda.values
dcs.set("voltage",[v_bias, 0]); dcs.set("voltage",[v_bias, 0]);
%%%%% SET Attenuator %%%%%% %%%%% SET Attenuator %%%%%%
voa = OptAtten("active",[1,2,1,1],"value",[rop_atten,pd_in_set,0,0],"wavelength",[1310,1310,1310,1310]); voa = OptAtten("active",[1,2,1,1],"value",[rop_atten,pd_in_set,0,0],"wavelength",[1310,1310,1310,1310],"speed",[1000,100,1000,1000]);
voa.set('active',[1,2,1,1],'value',[rop_atten,pd_in_set,0,0]); voa.set('active',[1,2,1,1],'value',[rop_atten,pd_in_set,0,0]);
% voa.readvals(); % voa.readvals();
%%%%% Construct AWG and Scope Modules %%%%%% %%%%% Construct AWG and Scope Modules %%%%%%
fdac = 256e9; fdac = 256e9;
fadc = 256e9; fadc = 256e9;
SCP = ScopeKeysight("model","UXR1104B",'autoscale',1,"fadc","GSa_256","channel",[0,1,0,0],"recordLen",2000000,"removeDC",1); SCP = ScopeKeysight("model","UXR1104B",'autoscale',1,"fadc","GSa_256","channel",[0,1,0,0],"recordLen",3000000,"removeDC",1);
AWG = AwgKeysight("model","M8199B","fdac",fdac,"scaletodac",[1,1],"skews",[0,0],"voltages",[0,awg_vpp]); AWG = AwgKeysight("model","M8199B","fdac",fdac,"scaletodac",[1,1],"skews",[0,0],"voltages",[0,awg_vpp]);
A2S = Awg2Scope(AWG,SCP,[0,2,0,0],"waitUntilClick",0); % A2S = Awg2Scope(AWG,SCP,[0,2,0,0],"waitUntilClick",0); %
%%%%% Symbol Generation %%%%%% %%%%% Symbol Generation %%%%%%
Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",0.05); Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rcalpha);
[Digi_sig,Symbols,Bits] = PAMsource(... [Digi_sig,Symbols,Bits] = PAMsource(...
"fsym",fsym,"M",M,"order",19,"useprbs",1,... "fsym",fsym,"M",M,"order",19,"useprbs",1,...
@@ -142,7 +150,8 @@ for lambda = wh.parameter.lambda.values
"db_precode",db_precode,"db_encode",db_coding_approach,... "db_precode",db_precode,"db_encode",db_coding_approach,...
"mrds_code",0,"mrds_blocklength",512).process(); "mrds_code",0,"mrds_blocklength",512).process();
Digi_sig.spectrum("displayname","Normal Tx","fignum",20,"normalizeToNyquist",0,"normalizeTo0dB",0); Digi_sig.spectrum("displayname","Normal Tx","fignum",10,"normalizeToNyquist",0,"normalizeTo0dB",0);
%%%%% Precompensation Routine %%%%%% %%%%% Precompensation Routine %%%%%%
if precomp_mode == 1 % measure channel if precomp_mode == 1 % measure channel
@@ -158,17 +167,17 @@ for lambda = wh.parameter.lambda.values
%%%%% Plot and Save Routine 1 %%%%%%%%%%%%%%%%%%%%%%%%% %%%%% Plot and Save Routine 1 %%%%%%%%%%%%%%%%%%%%%%%%%
Digi_sig.spectrum("displayname","Normal Tx","fignum",10,"normalizeToNyquist",0,"normalizeTo0dB",0); Digi_sig.spectrum("displayname","Normal Tx","fignum",14,"normalizeToNyquist",0,"normalizeTo0dB",0);
save([folderpath,[experiment_name,'_bits'],loop_name],"Bits"); % save([folderpath,[experiment_name,'_bits'],loop_name],"Bits");
save([folderpath,[experiment_name,'_symbols'],loop_name],"Symbols"); % save([folderpath,[experiment_name,'_symbols'],loop_name],"Symbols");
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%% AWG --> Scope %%%%%% %%%%% AWG --> Scope %%%%%%
[~,Scpe_sig_raw,~,D] = A2S.process("signal2",Digi_sig,"waitUntilClick",0); [~,Scpe_sig_raw,~,D] = A2S.process("signal2",Digi_sig,"waitUntilClick",0);
% Scpe_sig_raw.spectrum("displayname","Scope PSD","fignum",20); Scpe_sig_raw.spectrum("displayname","Scope PSD","fignum",20,"normalizeTo0dB",1);
% Scpe_sig_raw.plot("displayname","Scope raw signal","fignum",25,"clear",1); Scpe_sig_raw.plot("displayname","Scope raw signal","fignum",29,"clear",1);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%% Sample to 2x fsym %%%%%% %%%%%% Sample to 2x fsym %%%%%%
@@ -191,16 +200,25 @@ for lambda = wh.parameter.lambda.values
%%%%%% SNR CHEAT - Avges the measured signal occurences found after correlation in "tsynch" %%%%%% %%%%%% SNR CHEAT - Avges the measured signal occurences found after correlation in "tsynch" %%%%%%
average_signals = 0; average_signals = 0;
if average_signals if average_signals
Scpe_sig_avg = Scpe_sig_syncd;
scope_mean = zeros(size(S{1}.signal)); scope_mean = zeros(size(S{1}.signal));
for n=1:numel(S) for n=1:numel(S)
scope_mean = scope_mean + S{n}.signal; scope_mean = scope_mean + S{n}.signal;
end end
scope_mean = scope_mean ./ n; scope_mean = scope_mean ./ n;
Scpe_sig_syncd.signal = scope_mean; Scpe_sig_avg.signal = scope_mean;
Scpe_sig_avg.spectrum("displayname","Scope PSD","fignum",20,"normalizeTo0dB",1);
Scpe_sig_avg.plot("displayname","Scope raw signal","fignum",27,"clear",1);
Scpe_sig_avg.eye(fsym,M,"fignum",41,"displayname",' Eye of AVG Signal');
end end
% Optfilter = Filter('filtdegree',6,"f_cutoff",100e9,"fs",Scpe_sig_avg.fs,"filterType",filtertypes.gaussian,"active",true);
% Scpe_sig_syncd = Optfilter.process(Scpe_sig_syncd);
% Scpe_sig_syncd.spectrum("displayname","Scope PSD","fignum",20,"normalizeTo0dB",1);
%%%%% Plot and Save Routines: SAVE RECEIVED SIGNALS %%%%%%%%%%%%%%%%%%%%%%%%% %%%%% Plot and Save Routines: SAVE RECEIVED SIGNALS %%%%%%%%%%%%%%%%%%%%%%%%%
save([folderpath,experiment_name,'_rx_signal',loop_name],"S"); % save([folderpath,experiment_name,'_rx_signal',loop_name],"S");
Scpe_sig_syncd.eye(fsym,M,"fignum",40,"displayname",' after Scope'); Scpe_sig_syncd.eye(fsym,M,"fignum",40,"displayname",' after Scope');
@@ -227,11 +245,11 @@ for lambda = wh.parameter.lambda.values
[~,errors_bm,ber(i),errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1); [~,errors_bm,ber(i),errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
disp(['FFE: ',sprintf('%.1E',ber(i)),'| ROP: ',num2str(rop),' dB | PD_in: ',num2str(pd_in),' dBm']); % disp(['FFE: ',sprintf('%.1E',ber(i)),'| ROP: ',num2str(rop),' dB | PD_in: ',num2str(pd_in),' dBm']);
end end
disp(['FFE EQ: BEST BER: ',sprintf('%.1E',min(ber)),' AVG BER: ',sprintf('%.1E',mean(ber)),' WORST:',sprintf('%.1E',max(ber)),'. Out of ',num2str(numel(ber))]);
try try
ber_ffe = mean(rmoutliers(ber)); ber_ffe = mean(rmoutliers(ber));
catch catch
@@ -263,53 +281,118 @@ for lambda = wh.parameter.lambda.values
elseif postfilter_approach %%%%%%%%%%%%%%%%%%%%%%%%%%% elseif postfilter_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
[EQ_sig] = Eq.process(Scpe_sig_syncd,Symbols); ber_vnle = [];
ber_vnle_mlse = [];
ber_ffe_mlse =[];
ber_ffe = [];
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1); parfor s = 1:numel(S)
Noi = EQ_sig-Symbols;
Rx_bits = PAMmapper(M,0).demap(EQ_sig);
[~,num_errors,ber_ffe,pos_errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
if 1
%FFE LINEAR
Eq = EQ("Ne",[50,0,0],"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);
Scpe_sig_syncd = S{s};
[EQ_ffe] = Eq.process(Scpe_sig_syncd,Symbols);
Noi = EQ_ffe-Symbols;
Rx_bits = PAMmapper(M,0).demap(EQ_ffe);
[~,num_errors,ber_ffe(s),pos_errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
if 1
%FFE + MLSE
nc = 2; nc = 2;
burg_coeff = arburg(Noi.signal,nc); burg_coeff = arburg(Noi.signal,nc);
EQ_ffe = EQ_ffe.filter(burg_coeff,1);
EQ_mlse = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_ffe);
Rx_bits = PAMmapper(M,0).demap(EQ_mlse);
[~,num_errors,ber_ffe_mlse(s),pos_errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
%VNLE
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);
Scpe_sig_syncd = S{s};
[EQ_vnle] = Eq.process(Scpe_sig_syncd,Symbols);
Noi = EQ_vnle-Symbols;
Rx_bits = PAMmapper(M,0).demap(EQ_vnle);
[~,num_errors,ber_vnle(s),pos_errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
%VNLE + MLSE
if 0
nc = 2;
burg_coeff = arburg(Noi.signal,nc);
EQ_mlse = EQ_vnle.filter(burg_coeff,1);
EQ_mlse = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_mlse);
Rx_bits = PAMmapper(M,0).demap(EQ_mlse);
[~,num_errors,ber_vnle_mlse(s),pos_errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
end
disp(['FFE EQ: BEST BER: ',sprintf('%.1E',min(ber_ffe)),' AVG BER: ',sprintf('%.1E',mean(ber_ffe)),' WORST:',sprintf('%.1E',max(ber_ffe)),'. Out of ',num2str(numel(ber_ffe))]);
disp(['FFE + MLSE EQ: BEST BER: ',sprintf('%.1E',min(ber_ffe_mlse)),' AVG BER: ',sprintf('%.1E',mean(ber_ffe_mlse)),' WORST:',sprintf('%.1E',max(ber_ffe_mlse)),'. Out of ',num2str(numel(ber_ffe_mlse))]);
disp(['VNLE EQ: BEST BER: ',sprintf('%.1E',min(ber_vnle)),' AVG BER: ',sprintf('%.1E',mean(ber_vnle)),' WORST:',sprintf('%.1E',max(ber_vnle)),'. Out of ',num2str(numel(ber_vnle))]);
% disp(['VNLE+MLSE EQ: BEST BER: ',sprintf('%.1E',min(ber_vnle_mlse)),' AVG BER: ',sprintf('%.1E',mean(ber_vnle_mlse)),' WORST:',sprintf('%.1E',max(ber_vnle_mlse)),'. Out of ',num2str(numel(ber_ffe))]);
EQ_sig = EQ_sig.filter(burg_coeff,1);
if 0 if 0
Noi.spectrum('displayname','Noise PSD','fignum',123) window = 100;
Noi_ = Noi;
Noi.signal = Noi.signal - movmean(Noi.signal,[floor(window/2),ceil(window/2)]);
EQ_vnle.spectrum('displayname','EQ out PSD','fignum',123);
Noi.spectrum('displayname','Noise PSD','fignum',123);
nc = 1;
burg_coeff = arburg(Noi.signal,nc);
[h,w] = freqz(1,burg_coeff,length(Noi),"whole",Noi.fs); [h,w] = freqz(1,burg_coeff,length(Noi),"whole",Noi.fs);
h = h/max(abs(h)); h = h/max(abs(h));
hold on hold on
w_ = (w - Noi.fs/2); w_ = (w - Noi.fs/2);
plot(w_.*1e-9,20*log10(fftshift(h)),'DisplayName',['', num2str(nc), ' coefficients for burg alg.']); plot(w_.*1e-9,20*log10(fftshift(h)),'DisplayName',['', num2str(nc), ' coefficients for burg alg.']);
end end
if 0
EQ_sig = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig); figure(57);
clf
Rx_bits = PAMmapper(M,0).demap(EQ_sig); title(sprintf('PAM %d ; BER: %1.2e',M, ber_ffe));
constellation = unique(Symbols.signal);
[~,num_errors,ber_mlse,pos_errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1); received = NaN(numel(constellation),length(Symbols));
for lvl = 1:numel(constellation)
disp(['FFE: ',sprintf('%.1E',ber_ffe),' -> PF -> MLSE: ',sprintf('%.1E',ber_mlse),' dB | PD_in: ',num2str(pd_in),' dBm']); %Separate the equalized signal into the
%respective levels based on the actually
%transmitted level!
received(lvl,Symbols.signal==constellation(lvl)) = EQ_vnle.signal(Symbols.signal==constellation(lvl));
intermediate = received(lvl,:);
cnt(lvl) = numel(intermediate(~isnan(intermediate)));
hold on
histogram(received(lvl,:),1000,"EdgeAlpha",0,'DisplayName',['Lvl ',num2str(lvl),' | ',num2str(cnt(lvl)),' entries']);
end
legend
end
% disp(['FFE: ',sprintf('%.1E',ber_ffe),' -> PF -> MLSE: ',sprintf('%.1E',ber_mlse),' dB | PD_in: ',num2str(pd_in),' dBm']);
elseif db_channel_approach %%%%%%%%%%%%%%%%%%%%%%%%%%% elseif db_channel_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
parfor s = 1:numel(S)
Scpe_sig_syncd = S{s};
[EQ_sig, Noi] = Eq.process(Scpe_sig_syncd,Duobinary().encode(Symbols)); [EQ_sig, Noi] = Eq.process(Scpe_sig_syncd,Duobinary().encode(Symbols));
EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1); % 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 = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
EQ_sig = Duobinary().decode(EQ_sig); EQ_sig = Duobinary().decode(EQ_sig);
Rx_bits = PAMmapper(M,0).demap(EQ_sig); Rx_bits = PAMmapper(M,0).demap(EQ_sig);
[~,num_errors,ber_db,pos_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']); [~,num_errors,ber_db(s),pos_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(s)),' | PD_in: ',num2str(pd_in),' dBm']);
end
disp(['DB EQ: BEST BER: ',sprintf('%.1E',min(ber_db)),' AVG BER: ',sprintf('%.1E',mean(ber_db)),' WORST:',sprintf('%.1E',max(ber_db)),'. Out of',num2str(numel(ber_db))]);
ber = min(ber_db);
elseif db_coding_approach %%%%%%%%%%%%%%%%%%%%%%%%%%% elseif db_coding_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -328,20 +411,24 @@ for lambda = wh.parameter.lambda.values
%%%%% Store measurement into measurement "warehouse" %%%%%% %%%%% Store measurement into measurement "warehouse" %%%%%%
wh.addValueToStorage(ber,'ber_collect',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda); wh.addValueToStorage(ber,'ber_collect',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda,rcalpha);
wh.addValueToStorage(ber_ffe,'ber_ffe',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda); wh.addValueToStorage(ber_ffe,'ber_ffe',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda,rcalpha);
wh.addValueToStorage(ber_mlse,'ber_mlse',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda); wh.addValueToStorage(ber_mlse,'ber_mlse',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda,rcalpha);
wh.addValueToStorage(ber_db,'ber_db',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda); wh.addValueToStorage(ber_db,'ber_db',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda,rcalpha);
wh.addValueToStorage(rop,'rop',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda); wh.addValueToStorage(rop,'rop',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda,rcalpha);
wh.addValueToStorage(pd_in,'pd_in',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda); wh.addValueToStorage(pd_in,'pd_in',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda,rcalpha);
Rx_bits.logbook.SignalCopy = []; % Rx_bits.logbook.SignalCopy = [];
wh.addValueToStorage(Rx_bits,'rx_logbook',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda); % wh.addValueToStorage(Rx_bits,'rx_logbook',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda,rcalpha);
wh.addValueToStorage(M,'m',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda); wh.addValueToStorage(M,'m',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda,rcalpha);
wh.addValueToStorage(dcs,'dcs',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda,rcalpha);
wh.addValueToStorage(pdfa,'pdfa',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda,rcalpha);
wh.addValueToStorage(exfo,'exfo',v_bias,awg_vpp,precomp_amp_max,rop_atten,M,lambda,rcalpha);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%% Plot stuff into Table (feel free to add own values in -> 'name',value <- notation. Must be closed when table is changed)%%%%%%%%%%%%%%%%%%%%%% %%%%% Plot stuff into Table (feel free to add own values in -> 'name',value <- notation. Must be closed when table is changed)%%%%%%%%%%%%%%%%%%%%%%
showCurrentMeasurement('FFE', ber_ffe,'MLSE',ber_mlse, 'Fsym',fsym.*1e-9, 'ROP', rop, 'PD in', pd_in, 'PAM',M, 'Vbias', v_bias, 'AWG Vpp', awg_vpp, 'Precomp MaxAmp',precomp_amp_max); % showCurrentMeasurement('BER', min(ber_vnle),'BER',mean(ber_vnle),'Alpha',rcalpha, 'Fsym',fsym.*1e-9, 'ROP', rop,'pulsef',pulsef,'rrcalpha',rrcalpha, 'PAM',M, 'Vbias', v_bias, 'AWG Vpp', awg_vpp, 'Precomp MaxAmp',precomp_amp_max);
%%%%% Arrange Figures %%%%%%%%%%%%%%%%%%%%%% %%%%% Arrange Figures %%%%%%%%%%%%%%%%%%%%%%
autoArrangeFigures(3,3,2); autoArrangeFigures(3,3,2);
@@ -363,12 +450,14 @@ for lambda = wh.parameter.lambda.values
end end
end end
end end
end
close(hWaitbar); close(hWaitbar);
wh.save([folderpath,experiment_name,'_wh']); wh.save([folderpath,experiment_name,'_wh']);
autoArrangeFigures(3,3,2) % autoArrangeFigures(3,3,2)
%%% LAMBDA PLOT %%% LAMBDA PLOT

433
projects/HighSpeedExperiment_2024/master_evaluation.m Normal file
View File

@@ -0,0 +1,433 @@
folderpath = 'C:\Users\sioe\Documents\High_Speed_Measurement_2024\8km_bitrate_rop_master\';
experiment_name = '';
currentTime = datetime('now', 'Format', 'yyyyMMdd_HHmmss');
timeStr = char(currentTime);
experiment_name = [experiment_name, timeStr];
if 1
%%% BITRATE Sweep for MPI Experiment %%%
awg_vpp = 2.7;
pd_in_set = 8;
random_key = 0;
params = struct;
params.M = [4,6,8];
params.lambda = flip([1293, 1302, 1310, 1318, 1327.4]); %calcWavelengthPlan(16, 400e9 , 1310);
params.bitrate = [300:30:480].*1e9;
params.duobinary = [0,1];
params.rop_atten = [0];
end
if 0
%%% ROP SWEEP
awg_vpp = 2.7;
pd_in_set = 6;
random_key = 0;
params = struct;
params.M = [8,6,4];
params.lambda = [1310]; %calcWavelengthPlan(16, 400e9 , 1310);
params.bitrate = [300:30:480].*1e9;
params.duobinary = [1,0];
params.rop_atten = [0:1.5:7.5];
end
wh = DataStorage(params);
wh.addStorage("ber_ffe");
wh.addStorage("ber_ffe_mlse");
wh.addStorage("ber_vnle");
wh.addStorage("ber_vnle_mlse");
wh.addStorage("ber_db");
wh.addStorage("FFE");
wh.addStorage("VNLE");
wh.addStorage("pd_in");
wh.addStorage("rop");
wh.addStorage("m");
wh.addStorage("dcs");
wh.addStorage("pdfa");
wh.addStorage("exfo");
wh.addStorage("voa");
precomp_path = "C:\Users\sioe\Documents\High_Speed_Measurement_2024\precomp\";
precomp_fn = "lab_high_speed";
precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
looptotal = prod(wh.dim);
disp(['Start Measurement of ',num2str(looptotal),' loops...'])
iterationTimes = zeros(looptotal, 1); % Preallocate for speed
if ~exist('hWaitbar', 'var') || ~isvalid(hWaitbar)
hWaitbar = waitbar(0, sprintf('Starting %d measurements',looptotal), 'Name', 'Processing Progress');
else
waitbar(0, hWaitbar, sprintf('Starting %d measurements',looptotal));
end
loopcnt = 0;
estimatedTimeRemaining = 0;
estimatedTotalTime = 0;
for M = wh.parameter.M.values
dcs = DC_supply("active",[1,0],"voltage",[2.3, 0]);
if M == 4
v_bias_for_pam = 2.3;
dcs.set("voltage",[v_bias_for_pam, 0]);
pulsef = 1;
elseif M == 6
%pause(7*60); %wait 30 minutes for stable bias
v_bias_for_pam=2.3;
dcs.set("voltage",[v_bias_for_pam, 0]);
pulsef = 0;
elseif M == 8
v_bias_for_pam=2.6;
dcs.set("voltage",[v_bias_for_pam, 0]);
pause(7*60); %wait 30 minutes for stable bias
pulsef = 0;
end
for lambda = wh.parameter.lambda.values
exfo = Exfo_laser("serialport_number",'COM8','mainframe_channel',1,'safety_mode',0);
pdfa = Thor_PDFA("safety_mode",0);
exfo.getLaserInfo;
if ~(exfo.cur_wavelength == lambda)
% 1)
pdfa.disablePDFA;
% 2)
exfo.setWavelength(lambda);
% 3)
pdfa.enablePDFA();
% 4)
pdfa.setPumpLevel(100);
end
for bitrate = wh.parameter.bitrate.values
fsym = floor( bitrate*1e-9./log2(M) ).*1e9;
for db = wh.parameter.duobinary.values
if db == 1
ffe_only = 0;
postfilter_approach = 0;
db_channel_approach = 1;
db_coding_approach = 0;
db_precode = db_coding_approach || db_channel_approach;
if M == 4
pulsef=1;
precomp_amp_max = -50;
elseif M == 6
pulsef=0;
precomp_amp_max = -50;
elseif M == 8
pulsef=0;
precomp_amp_max = -50;
end
elseif db == 0
ffe_only = 0;
postfilter_approach = 1;
db_channel_approach = 0;
db_coding_approach = 0;
db_precode = db_coding_approach || db_channel_approach;
if M == 4
pulsef=1;
precomp_amp_max = -38;
elseif M == 6
pulsef=0;
precomp_amp_max = -34;
elseif M == 8
pulsef=0;
precomp_amp_max = -34;
end
end
%%%%% Construct AWG and Scope Modules %%%%%%
fdac = 256e9;
fadc = 256e9;
SCP = ScopeKeysight("model","UXR1104B",'autoscale',1,"fadc","GSa_256","channel",[0,1,0,0],"recordLen",4000000,"removeDC",1);
AWG = AwgKeysight("model","M8199B","fdac",fdac,"scaletodac",[1,1],"skews",[0,0],"voltages",[0,awg_vpp]);
A2S = Awg2Scope(AWG,SCP,[0,2,0,0],"waitUntilClick",0); %
%%%%% Symbol Generation %%%%%%
rcalpha = 0.05;
Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rcalpha);
Pamsource = PAMsource(...
"fsym",fsym,"M",M,"order",19,"useprbs",1,...
"fs_out",fdac,...
"applyclipping",0,"clipfactor",1.5,...
"applypulseform",pulsef,"pulseformer",Pform,...
"randkey",random_key,...
"db_precode",db_precode,"db_encode",db_coding_approach,...
"mrds_code",0,"mrds_blocklength",512);
[Digi_sig,Symbols,Bits] = Pamsource.process();
%%%%% Precompensation Routine %%%%%%
if precomp_mode == 1 % measure channel
precomp_est = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',fdac);
Digi_sig = precomp_est.buildOFDM();
elseif precomp_mode == 2 % apply precomp
precomp_est = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
Digi_sig = precomp_est.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);
% Digi_sig.spectrum("displayname","TX After precomp","fignum",30,"normalizeToNyquist",0,"normalizeTo0dB",1);
for rop_atten = wh.parameter.rop_atten.values
%%%%% Loop Preps
iterationStartTime = tic;
loopcnt = loopcnt+1;
loop_name = ['_PAM_',num2str(M),'_L_',num2str(lambda),'_R_',num2str(bitrate),'_DB_',num2str(db),'_ROP_',num2str(rop_atten)];
loop_name = strrep(loop_name,'.','_');
%%%%% READ Voltages %%%%%%
dcs.readVals();
%%%%% SET Attenuator %%%%%%
voa = OptAtten("active",[1,2,1,1],"value",[rop_atten,pd_in_set,0,0],"wavelength",[1310,1310,1310,1310],"speed",[1000,100,1000,1000]);
voa.set('active',[1,2,1,1],'value',[rop_atten,pd_in_set,0,0]);
voa.readvals();
%%%% SIGNAL USUALLY HERE, NOW ABOVE ROP_ATTEN %%%
%%%%% Plot and Save Routine 1 - same for all rops, thus save only once %%%%%%%%%%%%%%%%%%%%%%%%%
if rop_atten == 0
save([folderpath,experiment_name,loop_name,'_bits'],"Bits");
save([folderpath,experiment_name,loop_name,'_symbols'],"Symbols");
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%% AWG --> Scope %%%%%%
[~,Scpe_sig_raw,~,D] = A2S.process("signal2",Digi_sig,"waitUntilClick",0);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Scpe_sig_raw = Filter('filtdegree',5,"f_cutoff",0.55.*fsym,"fs",fadc,"filterType",filtertypes.gaussian,"active",true).process(Scpe_sig_raw);
%
% Scpe_sig_raw.plot("displayname","Scope raw signal","fignum",20,"clear",1);
% Scpe_sig_raw.spectrum("displayname","Scope PSD","fignum",30,"normalizeTo0dB",1);
% Scpe_sig_raw.eye(fsym,M,"displayname",'eye','fignum',200);
%%%%%% Sample to 2x fsym %%%%%%
Scpe_sig_resampled = Scpe_sig_raw.resample("fs_in",fadc,"fs_out",2*fsym);
%%%%% Precompensation Routine %%%%%%
if precomp_mode == 1
precomp_est.estimate(Scpe_sig_resampled,"save",true,"savePath",precomp_path,"fileName",precomp_fn);
precomp_est.plot();
end
voa.readvals();
rop = voa.power_state(1);
pd_in = voa.power_state(2);
%%%%%% Sync Rx signal with reference (S is a cell array with all occurences) %%%%%%
[Scpe_sig_syncd,S,isFlipped] = Scpe_sig_resampled.tsynch("reference",Symbols,"fs_ref",fsym);
%%%%% Plot and Save Routines: SAVE RECEIVED SIGNALS %%%%%%%%%%%%%%%%%%%%%%%%%
save([folderpath,experiment_name,loop_name,'_rx_signal'],"S");
save([folderpath,experiment_name,loop_name,'_raw_signal'],"Scpe_sig_raw");
%%%%% EQUALIZE %%%%%%
% set to minus one not zero not avoid confusion if BER is acutally zero
ber_vnle = [-1];
ber_vnle_mlse = [-1];
ber_ffe_mlse =[-1];
ber_ffe = [-1];
ber_db = [-1];
ffe = EQ("Ne",[50,0,0],"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);
vnle = 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 postfilter_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
eq_values = min(numel(S),8);
Noi = cell(eq_values,1);
EQ_vnle= cell(eq_values,1);
EQ_ffe= cell(eq_values,1);
if 0
parfor s = 1:eq_values
if 0
%FFE LINEAR
Scpe_sig_syncd = S{s};
[EQ_ffe{s}] = ffe.process(Scpe_sig_syncd,Symbols);
Noi{s} = EQ_ffe{s}-Symbols;
Rx_bits = PAMmapper(M,0).demap(EQ_ffe{s});
[~,~,ber_ffe(s),~] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
if 0
%FFE + MLSE
nc = 2;
burg_coeff = arburg(Noi{s}.signal,nc);
EQ_ffe{s} = EQ_ffe{s}.filter(burg_coeff,1);
EQ_mlse = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_ffe{s});
Rx_bits = PAMmapper(M,0).demap(EQ_mlse);
[~,~,ber_ffe_mlse(s),~] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
if 1
%VNLE
Scpe_sig_syncd = S{s};
[EQ_vnle{s}] = vnle.process(Scpe_sig_syncd,Symbols);
Noi{s} = EQ_vnle{s}-Symbols;
Rx_bits = PAMmapper(M,0).demap(EQ_vnle{s});
[~,~,ber_vnle(s),~] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
%VNLE + MLSE
if 1
nc = 2;
burg_coeff = arburg(Noi{s}.signal,nc);
EQ_mlse = EQ_vnle{s}.filter(burg_coeff,1);
EQ_mlse = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_mlse);
Rx_bits = PAMmapper(M,0).demap(EQ_mlse);
[~,~,ber_vnle_mlse(s),~] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
end
disp(['FFE EQ: BEST BER: ',sprintf('%.1E',min(ber_ffe)),' AVG BER: ',sprintf('%.1E',mean(ber_ffe)),' WORST:',sprintf('%.1E',max(ber_ffe)),'. Out of ',num2str(numel(ber_ffe))]);
disp(['FFE + MLSE EQ: BEST BER: ',sprintf('%.1E',min(ber_ffe_mlse)),' AVG BER: ',sprintf('%.1E',mean(ber_ffe_mlse)),' WORST:',sprintf('%.1E',max(ber_ffe_mlse)),'. Out of ',num2str(numel(ber_ffe_mlse))]);
disp(['VNLE EQ: BEST BER: ',sprintf('%.1E',min(ber_vnle)),' AVG BER: ',sprintf('%.1E',mean(ber_vnle)),' WORST:',sprintf('%.1E',max(ber_vnle)),'. Out of ',num2str(numel(ber_vnle))]);
disp(['VNLE+MLSE EQ: BEST BER: ',sprintf('%.1E',min(ber_vnle_mlse)),' AVG BER: ',sprintf('%.1E',mean(ber_vnle_mlse)),' WORST:',sprintf('%.1E',max(ber_vnle_mlse)),'. Out of ',num2str(numel(ber_ffe))]);
[~,i] = min(ber_vnle);
figure(56);
clf
title(sprintf('PAM %d ; BER: %1.2e',M, ber_vnle(i)));
constellation = unique(Symbols.signal);
received = NaN(numel(constellation),length(Symbols));
for lvl = 1:numel(constellation)
%Separate the equalized signal into the
%respective levels based on the actually
%transmitted level!
received(lvl,Symbols.signal==constellation(lvl)) = EQ_vnle{i}.signal(Symbols.signal==constellation(lvl));
intermediate = received(lvl,:);
cnt(lvl) = numel(intermediate(~isnan(intermediate)));
hold on
histogram(received(lvl,:),1000,"EdgeAlpha",0,'DisplayName',['Lvl ',num2str(lvl),' | ',num2str(cnt(lvl)),' entries']);
end
legend
end
elseif db_channel_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
ffe = EQ("Ne",[50,0,0],"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 0
parfor s = 1:numel(S)
Scpe_sig_syncd = S{s};
[EQ_sig, Noi] = ffe.process(Scpe_sig_syncd,Duobinary().encode(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);
[~,num_errors,ber_db(s),pos_errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
disp(['DB EQ: BEST BER: ',sprintf('%.1E',min(ber_db)),' AVG BER: ',sprintf('%.1E',mean(ber_db)),' WORST:',sprintf('%.1E',max(ber_db)),'. Out of',num2str(numel(ber_db))]);
else
disp('Disabled MLSE for DB in all cases, due to time in measurement loop')
end
elseif db_coding_approach
parfor s = 1:numel(S)
S{s}=S{s}.normalize("mode","rms");
ffe = 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);
[EQ_sig, Noi] = ffe.process(S{s},Symbols);
EQ_sig.plot("displayname",'After EQ','fignum',112);
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);
[~,num_errors,ber_db(s),pos_errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
disp(['DB EQ: BEST BER: ',sprintf('%.1E',min(ber_db)),' AVG BER: ',sprintf('%.1E',mean(ber_db)),' WORST:',sprintf('%.1E',max(ber_db)),'. Out of',num2str(numel(ber_db))]);
end
%%%%% Store measurement into measurement "warehouse" %%%%%%
wh.addValueToStorage({ber_ffe},'ber_ffe',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage({ber_ffe_mlse},'ber_ffe_mlse',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage({ber_vnle},'ber_vnle',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage({ber_vnle_mlse},'ber_vnle_mlse',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage({ber_db},'ber_db',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage(rop,'rop',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage(pd_in,'pd_in',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage(M,'m',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage(dcs,'dcs',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage(pdfa,'pdfa',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage(exfo,'exfo',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage(voa,'voa',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage(ffe,'FFE',M,lambda,bitrate,db,rop_atten);
wh.addValueToStorage(vnle,'VNLE',M,lambda,bitrate,db,rop_atten);
iterationTimes(loopcnt) = toc(iterationStartTime);
averageTimePerIteration = mean(iterationTimes(1:loopcnt));
estimatedTotalTime = averageTimePerIteration * looptotal;
estimatedTimeRemaining = estimatedTotalTime - sum(iterationTimes(1:loopcnt));
progressFraction = loopcnt / looptotal;
waitbar(progressFraction, hWaitbar, ...
sprintf('Loop: %d of %d \n Runtime: %.1f min | %.1f sec per Loop |Time to go: %.1f min ', ...
loopcnt, looptotal, sum(iterationTimes(1:loopcnt))/60, averageTimePerIteration, estimatedTimeRemaining/60 ));
wh.save([folderpath,experiment_name,'_wh']);
end
end
end
end
end
close(hWaitbar);
wh.save([folderpath,experiment_name,'_wh']);

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folderpath = 'C:\Users\sioe\Documents\High_Speed_Measurement_2024\mpi_measurement\';
experiment_name = 'testen';
currentTime = datetime('now', 'Format', 'yyyyMMdd_HHmmss');
timeStr = char(currentTime);
experiment_name = [experiment_name, timeStr];
%%% BITRATE Sweep for MPI Experiment %%%
awg_vpp = 2.7;
rop_atten = 0; %VOA 1 -> %nicht angeschlossen
pd_in_set = 8; %VOA 2 -> PD in
%VOA 3 -> Signal path
%VOA 4 -> Interference path
random_key = 0;
params = struct;
params.M = [8];
params.bitrate = [336].*1e9;%[90:60:480].*1e9;%[300:30:480].*1e9;
params.duobinary = [0];
params.interference_atten = [45];
wh = DataStorage(params);
wh.addStorage("ber_ffe");
wh.addStorage("ber_ffe_mlse");
wh.addStorage("ber_vnle");
wh.addStorage("ber_vnle_mlse");
wh.addStorage("ber_db");
wh.addStorage("FFE");
wh.addStorage("VNLE");
wh.addStorage("pd_in");
wh.addStorage("rop");
wh.addStorage("s_power");
wh.addStorage("i_power");
wh.addStorage("sir");
wh.addStorage("m");
wh.addStorage("dcs");
wh.addStorage("pdfa");
wh.addStorage("exfo");
wh.addStorage("voa");
precomp_path = "C:\Users\sioe\Documents\High_Speed_Measurement_2024\precomp\";
precomp_fn = "lab_high_speed";
precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
looptotal = prod(wh.dim);
disp(['Start Measurement of ',num2str(looptotal),' loops...'])
iterationTimes = zeros(looptotal, 1); % Preallocate for speed
if ~exist('hWaitbar', 'var') || ~isvalid(hWaitbar)
hWaitbar = waitbar(0, sprintf('Starting %d measurements',looptotal), 'Name', 'Processing Progress');
else
waitbar(0, hWaitbar, sprintf('Starting %d measurements',looptotal));
end
loopcnt = 0;
estimatedTimeRemaining = 0;
estimatedTotalTime = 0;
for M = wh.parameter.M.values
dcs = DC_supply("active",[1,0],"voltage",[2.3, 0]);
if M == 4
v_bias_for_pam = 2.3;
dcs.set("voltage",[v_bias_for_pam, 0]);
pulsef = 1;
elseif M == 6
%pause(7*60); %wait 30 minutes for stable bias
v_bias_for_pam=2.3;
dcs.set("voltage",[v_bias_for_pam, 0]);
pulsef = 0;
elseif M == 8
v_bias_for_pam=2.6;
dcs.set("voltage",[v_bias_for_pam, 0]);
disp('waiting...');
%pause(5*60); %wait 5 minutes for stable bias
pulsef = 0;
end
for bitrate = wh.parameter.bitrate.values
fsym = floor( bitrate*1e-9./log2(M) ).*1e9;
for db = wh.parameter.duobinary.values
if db == 1
ffe_only = 0;
postfilter_approach = 0;
db_channel_approach = 1;
db_coding_approach = 0;
db_precode = db_coding_approach || db_channel_approach;
if M == 4
pulsef=1;
precomp_amp_max = -50;
elseif M == 6
pulsef=0;
precomp_amp_max = -50;
elseif M == 8
pulsef=0;
precomp_amp_max = -50;
end
elseif db == 0
ffe_only = 0;
postfilter_approach = 1;
db_channel_approach = 0;
db_coding_approach = 0;
db_precode = db_coding_approach || db_channel_approach;
if M == 4
pulsef=1;
precomp_amp_max = -38;
elseif M == 6
pulsef=0;
precomp_amp_max = -34;
elseif M == 8
pulsef=0;
precomp_amp_max = -34;
end
end
%%%%% Construct AWG and Scope Modules %%%%%%
fdac = 256e9;
fadc = 256e9;
%%%%% Symbol Generation %%%%%%
rcalpha = 0.05;
Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rcalpha);
Pamsource = PAMsource(...
"fsym",fsym,"M",M,"order",19,"useprbs",1,...
"fs_out",fdac,...
"applyclipping",0,"clipfactor",1.5,...
"applypulseform",pulsef,"pulseformer",Pform,...
"randkey",random_key,...
"db_precode",db_precode,"db_encode",db_coding_approach,...
"mrds_code",0,"mrds_blocklength",512);
[Digi_sig,Symbols,Bits] = Pamsource.process();
%%%%% Precompensation Routine %%%%%%
if precomp_mode == 1 % measure channel
precomp_est = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',fdac);
Digi_sig = precomp_est.buildOFDM();
elseif precomp_mode == 2 % apply precomp
precomp_est = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
Digi_sig = precomp_est.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);
% Digi_sig = Filter('filtdegree',5,"f_cutoff",0.75*fsym,"fs",fadc,"filterType",filtertypes.gaussian,"active",true).process(Digi_sig);
% Digi_sig.spectrum("displayname","TX After precomp","fignum",10,"normalizeToNyquist",0,"normalizeTo0dB",0);
holdAndShowValue;
scopeAutoScale = 1;
for interference_atten = wh.parameter.interference_atten.values
SCP = ScopeKeysight("model","UXR1104B",'autoscale',scopeAutoScale,"fadc","GSa_256","channel",[0,1,0,0],"recordLen",10000000,"removeDC",1);
AWG = AwgKeysight("model","M8199B","fdac",fdac,"scaletodac",[1,1],"skews",[0,0],"voltages",[0,awg_vpp]);
A2S = Awg2Scope(AWG,SCP,[0,2,0,0],"waitUntilClick",1); %
scopeAutoScale = 0; %until is set to 1 in next db change and then bitrate
%%%%% Loop Preps
iterationStartTime = tic;
loopcnt = loopcnt+1;
loop_name = ['_PAM_',num2str(M),'_R_',num2str(bitrate),'_DB_',num2str(db),'_I_atten_',num2str(interference_atten)];
loop_name = strrep(loop_name,'.','_');
%%%%% READ Voltages %%%%%%
dcs.readVals();
%%%%% SET Attenuator %%%%%%
voa = OptAtten("active",[1,2,1,1],"value",[rop_atten,pd_in_set,0,interference_atten],"wavelength",[1310,1310,1310,1310],"speed",[1000,100,1000,1000]);
voa.set('active',[1,2,1,1],'value',[rop_atten,pd_in_set,0,interference_atten]);
%%%% SIGNAL USUALLY HERE, NOW ABOVE ROP_ATTEN %%%
%%%%% Plot and Save Routine 1 - same for all rops, thus save only once %%%%%%%%%%%%%%%%%%%%%%%%%
if interference_atten == 0
save([folderpath,experiment_name,loop_name,'_bits'],"Bits");
save([folderpath,experiment_name,loop_name,'_symbols'],"Symbols");
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%% AWG --> Scope %%%%%%
[~,Scpe_sig_raw,~,D] = A2S.process("signal2",Digi_sig,"waitUntilClick",0);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Scpe_sig_raw.spectrum("displayname","Scope PSD before filter","fignum",30,"normalizeTo0dB",1);
Scpe_sig_raw = Filter('filtdegree',5,"f_cutoff",0.65.*fsym,"fs",fadc,"filterType",filtertypes.gaussian,"active",true).process(Scpe_sig_raw);
% Scpe_sig_raw.spectrum("displayname","Scope PSD after filter","fignum",30,"normalizeTo0dB",1);
%%%%%% Sample to 2x fsym %%%%%%
Scpe_sig_resampled = Scpe_sig_raw.resample("fs_in",fadc,"fs_out",2*fsym);
voa.readvals();
rop = voa.power_state(1);
pd_in = voa.power_state(2);
i_power = voa.power_state(4);
s_power = voa.power_state(3);
sir = s_power-i_power;
Scpe_sig_raw.plot("displayname",['SIR: ',sprintf('%.2f',sir),' dB'],"fignum",20,"clear",1);
disp(['PDin: ',sprintf('%.2f',pd_in),' dB | S: ',sprintf('%.2f',s_power),' dB | I: ',sprintf('%.2f',i_power),' dB | -> SIR: ',sprintf('%.2f',sir),' dB']);
%%%%%% Sync Rx signal with reference (S is a cell array with all occurences) %%%%%%
[Scpe_sig_syncd,S,isFlipped] = Scpe_sig_resampled.tsynch("reference",Symbols,"fs_ref",fsym);
%%%%% Plot and Save Routines: SAVE RECEIVED SIGNALS %%%%%%%%%%%%%%%%%%%%%%%%%
save([folderpath,experiment_name,loop_name,'_rx_signal'],"S");
save([folderpath,experiment_name,loop_name,'_raw_signal'],"Scpe_sig_raw");
%%%%% EQUALIZE %%%%%%
% set to minus one not zero not avoid confusion if BER is acutally zero
ber_vnle = [-1];
ber_vnle_mlse = [-1];
ber_ffe_mlse =[-1];
ber_ffe = [-1];
ber_db = [-1];
ffe = EQ("Ne",[50,0,0],"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);
vnle = 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 postfilter_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
if 1
eq_values = min(numel(S),8);
Noi = cell(eq_values,1);
EQ_vnle= cell(eq_values,1);
EQ_ffe= cell(eq_values,1);
parfor s = 1:eq_values
if 0
%FFE LINEAR
Scpe_sig_syncd = S{s};
[EQ_ffe{s}] = ffe.process(Scpe_sig_syncd,Symbols);
Noi{s} = EQ_ffe{s}-Symbols;
Rx_bits = PAMmapper(M,0).demap(EQ_ffe{s});
[~,~,ber_ffe(s),~] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
if 0
%FFE + MLSE
nc = 2;
burg_coeff = arburg(Noi{s}.signal,nc);
EQ_ffe{s} = EQ_ffe{s}.filter(burg_coeff,1);
EQ_mlse = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_ffe{s});
Rx_bits = PAMmapper(M,0).demap(EQ_mlse);
[~,~,ber_ffe_mlse(s),~] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
if 1
%VNLE
Scpe_sig_syncd = S{s};
[EQ_vnle{s}] = vnle.process(Scpe_sig_syncd,Symbols);
Noi{s} = EQ_vnle{s}-Symbols;
Rx_bits = PAMmapper(M,0).demap(EQ_vnle{s});
[~,~,ber_vnle(s),~] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
%VNLE + MLSE
if 1
nc = 2;
burg_coeff = arburg(Noi{s}.signal,nc);
EQ_mlse = EQ_vnle{s}.filter(burg_coeff,1);
EQ_mlse = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_mlse);
Rx_bits = PAMmapper(M,0).demap(EQ_mlse);
[~,~,ber_vnle_mlse(s),~] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
end
if 0
nc=1;
Noi{1}.spectrum('displayname',['Noise; SIR:',sprintf('%.2f',sir)],'fignum',40,'normalizeTo0dB',1);
burg_coeff = arburg(Noi{1}.signal,nc);
[h,w] = freqz(1,burg_coeff,length(Noi{1}),"whole",Noi{1}.fs);
h = h/max(abs(h));
hold on
w_ = (w - Noi{1}.fs/2);
plot(w_.*1e-9,20*log10(fftshift(h)),'DisplayName',[num2str(nc), ' burg; SIR:',sprintf('%.2f',sir)]);
drawnow;
end
end
% disp(['FFE EQ: BEST BER: ',sprintf('%.1E',min(ber_ffe)),' AVG BER: ',sprintf('%.1E',mean(ber_ffe)),' WORST:',sprintf('%.1E',max(ber_ffe)),'. Out of ',num2str(numel(ber_ffe))]);
% disp(['FFE + MLSE EQ: BEST BER: ',sprintf('%.1E',min(ber_ffe_mlse)),' AVG BER: ',sprintf('%.1E',mean(ber_ffe_mlse)),' WORST:',sprintf('%.1E',max(ber_ffe_mlse)),'. Out of ',num2str(numel(ber_ffe_mlse))]);
disp(['VNLE EQ: BEST BER: ',sprintf('%.1E',min(ber_vnle)),' AVG BER: ',sprintf('%.1E',mean(ber_vnle)),' WORST:',sprintf('%.1E',max(ber_vnle)),'. Out of ',num2str(numel(ber_vnle))]);
% disp(['VNLE+MLSE EQ: BEST BER: ',sprintf('%.1E',min(ber_vnle_mlse)),' AVG BER: ',sprintf('%.1E',mean(ber_vnle_mlse)),' WORST:',sprintf('%.1E',max(ber_vnle_mlse)),'. Out of ',num2str(numel(ber_vnle_mlse))]);
elseif db_channel_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
ffe = EQ("Ne",[50,0,0],"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);
ffe = 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 0
eq_values = min(numel(S),8);
Noi = cell(eq_values,1);
EQ_sig = cell(eq_values,1);
parfor s = 1:eq_values
Scpe_sig_syncd = S{s};
[EQ_sig{s}, Noi{s}] = ffe.process(Scpe_sig_syncd,Duobinary().encode(Symbols));
EQ_sig{s}.signal = EQ_sig{s}.signal-mean(EQ_sig{s}.signal);
EQ_sig_mlse = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig{s});
EQ_sig_mlse = Duobinary().decode(EQ_sig_mlse);
Rx_bits = PAMmapper(M,0).demap(EQ_sig_mlse);
[~,num_errors,ber_db(s),pos_errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
end
if 0
Noi{1}.spectrum('displayname',['Noise; SIR:',sprintf('%.2f',sir)],'fignum',40,'normalizeTo0dB',1);
Duobinary().encode(Symbols).spectrum('displayname',['DB coded symbols; SIR:',sprintf('%.2f',sir)],'fignum',40,'normalizeTo0dB',1);
EQ_sig{1}.spectrum('displayname',['EQ; SIR:',sprintf('%.2f',sir)],'fignum',40,'normalizeTo0dB',1);
EQ_sig{1}.signal = EQ_sig{1}.signal-mean(EQ_sig{1}.signal);
end
disp(['DB EQ: BEST BER: ',sprintf('%.1E',min(ber_db)),' AVG BER: ',sprintf('%.1E',mean(ber_db)),' WORST:',sprintf('%.1E',max(ber_db)),'. Out of',num2str(numel(ber_db))]);
else
disp('Disabled MLSE for DB in all cases, due to time in measurement loop')
end
end
%%%%% Store measurement into measurement "warehouse" %%%%%%
wh.addValueToStorage({ber_ffe},'ber_ffe',M,bitrate,db,interference_atten);
wh.addValueToStorage({ber_ffe_mlse},'ber_ffe_mlse',M,bitrate,db,interference_atten);
wh.addValueToStorage({ber_vnle},'ber_vnle',M,bitrate,db,interference_atten);
wh.addValueToStorage({ber_vnle_mlse},'ber_vnle_mlse',M,bitrate,db,interference_atten);
wh.addValueToStorage({ber_db},'ber_db',M,bitrate,db,interference_atten);
wh.addValueToStorage(rop,'rop',M,bitrate,db,interference_atten);
wh.addValueToStorage(pd_in,'pd_in',M,bitrate,db,interference_atten);
wh.addValueToStorage(s_power,'s_power',M,bitrate,db,interference_atten);
wh.addValueToStorage(i_power,'i_power',M,bitrate,db,interference_atten);
wh.addValueToStorage(sir,'sir',M,bitrate,db,interference_atten);
wh.addValueToStorage(M,'m',M,bitrate,db,interference_atten);
wh.addValueToStorage(dcs,'dcs',M,bitrate,db,interference_atten);
exfo = Exfo_laser("serialport_number",'COM8','mainframe_channel',1,'safety_mode',0);
exfo.getLaserInfo;
wh.addValueToStorage(exfo,'exfo',M,bitrate,db,interference_atten);
wh.addValueToStorage(voa,'voa',M,bitrate,db,interference_atten);
wh.addValueToStorage(ffe,'FFE',M,bitrate,db,interference_atten);
wh.addValueToStorage(vnle,'VNLE',M,bitrate,db,interference_atten);
iterationTimes(loopcnt) = toc(iterationStartTime);
averageTimePerIteration = mean(iterationTimes(1:loopcnt));
estimatedTotalTime = averageTimePerIteration * looptotal;
estimatedTimeRemaining = estimatedTotalTime - sum(iterationTimes(1:loopcnt));
progressFraction = loopcnt / looptotal;
waitbar(progressFraction, hWaitbar, ...
sprintf('Loop: %d of %d \n Runtime: %.1f min | %.1f sec per Loop |Time to go: %.1f min ', ...
loopcnt, looptotal, sum(iterationTimes(1:loopcnt))/60, averageTimePerIteration, estimatedTimeRemaining/60 ));
wh.save([folderpath,experiment_name,'_wh']);
showCurrentMeasurement('SIR', sir, 'I Att', interference_atten,'BER V', min(ber_vnle),'BER M',min(ber_vnle_mlse),'BER DB',min(ber_db),'Fsym',fsym.*1e-9, 'ROP', rop, 'PAM',M);
end
end
end
end
close(hWaitbar);
wh.save([folderpath,experiment_name,'_wh']);
disp('Measurement complete')