From 2927a29d85e34fc1a901ecc38f2da51e62442ca3 Mon Sep 17 00:00:00 2001 From: sioe Date: Sun, 20 Oct 2024 17:32:07 +0200 Subject: [PATCH 1/2] add offline analysis --- .../offline_dsp_analysis/process_vnle_mlse.m | 113 ++++++++++++++++++ 1 file changed, 113 insertions(+) create mode 100644 projects/Lab_2024/offline_dsp_analysis/process_vnle_mlse.m diff --git a/projects/Lab_2024/offline_dsp_analysis/process_vnle_mlse.m b/projects/Lab_2024/offline_dsp_analysis/process_vnle_mlse.m new file mode 100644 index 0000000..c4ab197 --- /dev/null +++ b/projects/Lab_2024/offline_dsp_analysis/process_vnle_mlse.m @@ -0,0 +1,113 @@ +foldername = 'C:\Users\Silas\Nextcloud4\Dokumente\02_Ablage_Office\Lab_Data_24\sir_sweep_pam4'; +filename = 'PAM4_10km_'; + +M = 4; + +Bits = load([foldername, filesep, filename, 'bits'],'Bits'); +Bits = Bits.Bits; + +Symbols = load([foldername, filesep, filename, 'symbols'],'Symbols'); +Symbols = Symbols.Symbols; + +all_signals = load([foldername, filesep, filename, 'best_rx_signals']); +all_signals = all_signals.all_signals; + +stuff = load([foldername,filesep,filename,'wh']); +wh = stuff.obj; +i_atten_vals = wh.parameter.i_atten.values; +v_bias = wh.parameter.vbias.values(1); +awg_vpp = wh.parameter.awg_vpp.values(1); +eqmode = wh.parameter.eq_mode.values(1); + + +ber_vnle = zeros(1,numel(all_signals)); +ber_mlse = zeros(numel(all_signals),3); + +Eq = EQ("Ne",[25,0,0],"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",0.00,"FFEmu",0,"plotfinal",0,"ideal_dfe",1); + +Eq = 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",1,"buffer_length",80); + +Eq = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",25,"sps",2,"decide",1); + +col = linspecer(11); +atten = 40:-4:0; +for i = 1:numel(atten) + + sir_measured = wh.getStoValue('sir',v_bias,awg_vpp,eqmode,atten(i)); + + Scpe_sig = all_signals(i); + + [EQ_sig, Noi] = Eq.process(Scpe_sig,Symbols); + + Noi.spectrum('displayname',['SIR: ', num2str(sir_measured), ' dB '],'fignum',12345,'color',col(i,:)) + + % EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1); + + Rx_bits = PAMmapper(M,0).demap(EQ_sig); + + [~,~,ber_vnle(i),~] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1); + + % for nc = 1:3 + % + % burg_coeff = arburg(Noi.signal,nc); + % + % EQ_sig_mlse = EQ_sig.filter(burg_coeff,1); + % + % + % if 1 + % Noi.spectrum('displayname',['SIR: ', num2str(sir_measured), ' dB '],'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); + % clf + % 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 = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig_mlse); + % + % Rx_bits = PAMmapper(M,0).demap(EQ_sig_mlse); + % [~,~,ber_mlse(i,nc),~] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1); + % + % disp(['FFE: ',sprintf('%.1E',ber_vnle(i)),' -> PF -> MLSE: ',sprintf('%.1E',ber_mlse(i,nc)),' dB ']); + % end + + +end + + + +bers = wh.getStoValue('ber',v_bias,awg_vpp,eqmode,i_atten_vals); +sirs = wh.getStoValue('sir',v_bias,awg_vpp,eqmode,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 +hLine1 = plot(sirs, (ber_vnle), "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", 'VNLE 2'); +hLine2 = plot(sirs, (ber_mlse(:,1)), "LineWidth", 0.5, "LineStyle", "-", "Marker", "o", "MarkerSize", 15, "DisplayName", ['VNLE + PF ',num2str(1),' taps + MLSE']); +hLine2 = plot(sirs, (ber_mlse(:,2)), "LineWidth", 0.5, "LineStyle", "-", "Marker", "x", "MarkerSize", 15, "DisplayName", ['VNLE + PF ',num2str(2),' taps + MLSE']); +hLine2 = plot(sirs, (ber_mlse(:,3)), "LineWidth", 0.5, "LineStyle", "-", "Marker", "square", "MarkerSize", 15, "DisplayName", ['VNLE + PF ',num2str(3),' taps + MLSE']); +% hLine3 = plot(sirs, bers, "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", 'from measurement'); + +% 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'); From 6dca327d10702c014be690ff8e780749930550d7 Mon Sep 17 00:00:00 2001 From: Silas Date: Mon, 21 Oct 2024 07:28:32 +0200 Subject: [PATCH 2/2] Routines to load and DSP measured data from MPI experiment with SD40 --- .DS_Store | Bin 6148 -> 6148 bytes Classes/00_signals/Signal.m | 3 +- projects/.DS_Store | Bin 6148 -> 6148 bytes .../offline_dsp_analysis/load_n_dsp.m | 170 ++++++++++-------- .../offline_dsp_analysis/process_vnle_mlse.m | 14 +- 5 files changed, 109 insertions(+), 78 deletions(-) diff --git a/.DS_Store b/.DS_Store index 8db142e1e776b5704d97c3da92e92d39fca20af1..7666e0941a2cca30df4b52aa508eb406f3c336ba 100644 GIT binary patch delta 38 ucmZoMXfc@J&&a$nU^gQp^JE^T_naxk$vH{+`8kZ6pEEJDZf58B%MSqXG7M_~ delta 33 pcmZoMXfc@J&&aefU^nAr0}+ PF -> MLSE: ',sprintf('%.1E',ber_mlse_(i)),' dB ']); + + % disp(['FFE: ',sprintf('%.1E',ber_vnle(cnt,i)),' -> PF -> MLSE: ',sprintf('%.1E',ber_mlse(i,nc)),' dB']); + elseif eqmode == 3 - + [EQ_sig, Noi] = Eq.process(Scpe_sig,Duobinary().encode(Symbols)); - % EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1); + + + c = 6; + + EQ_sig.spectrum('displayname',['DB out',num2str(sir_measured)],'fignum',11,'normalizeTo0dB',1,'normalizeToNyquist',1,'color',cols(c,:)); + + Noi.spectrum('displayname',['DB Noise',num2str(sir_measured)],'fignum',12,'normalizeTo0dB',1,'normalizeToNyquist',1,'color',cols(c,:)); + + 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_db_(i),errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1); + [~,errors_bm,ber_db(i),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_(i)),' ']); + disp([' DB Precode -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber_db(i)),' ']); end + end if eqmode == 2 - [ber_ffe_2(cnt),idx] = min(ber_ffe_only_); - [ber_mlse_2(cnt),idx] = min(ber_mlse_); - + ber_mlse_(cnt,:,:) = ber_mlse(1:size(ber_mlse_,2),:); + ber_vnle_(cnt,:,:) = ber_vnle(1:size(ber_mlse_,2)); elseif eqmode == 3 - [ber_db(cnt),idx] = min(ber_db_); + ber_db_(cnt,:,:) = ber_db; end - all_signals(:,cnt) = Signal_cell.S{idx}; - end - +ber_vnle_min = flip(squeeze(min(ber_vnle_,[],2))); +ber_mlse_min = flip(squeeze(min(ber_mlse_,[],2))); +ber_db_min = flip(min(ber_db_,[],2)); cols = linspecer(8); @@ -140,13 +167,14 @@ hold on; % Retain the plot so new points can be added without complete redraw % Plot the data and get the line handle if eqmode == 2 - hLine1 = plot(sirs, ber_ffe_2, "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", 'VNLE 2'); - hLine2 = plot(sirs, ber_mlse_2, "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", 'VNLE+MLSE 2'); - elseif eqmode == 3 - hLine2 = plot(sirs, ber_db, "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", 'DB '); + plot(sirs, ber_vnle_min, "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", 'VNLE'); + plot(sirs, ber_mlse_min(:,1), "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", 'MLSE 1'); + plot(sirs, ber_mlse_min(:,2), "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", 'MLSE 2'); + plot(sirs, ber_mlse_min(:,3), "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", 'MLSE 3'); +elseif eqmode == 3 + plot(sirs, ber_db_min, "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", 'DB '); end -hLine3 = plot(sirs, bers, "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", 'from measurement'); % Continue with the rest of your plot settings diff --git a/projects/Lab_2024/offline_dsp_analysis/process_vnle_mlse.m b/projects/Lab_2024/offline_dsp_analysis/process_vnle_mlse.m index c4ab197..4463c2a 100644 --- a/projects/Lab_2024/offline_dsp_analysis/process_vnle_mlse.m +++ b/projects/Lab_2024/offline_dsp_analysis/process_vnle_mlse.m @@ -1,16 +1,18 @@ -foldername = 'C:\Users\Silas\Nextcloud4\Dokumente\02_Ablage_Office\Lab_Data_24\sir_sweep_pam4'; -filename = 'PAM4_10km_'; + + +foldername = '/Users/silasoettinghaus/Nextcloud/Dokumente/02_Ablage_Office/Lab_Data_24/sir_sweep_sd40/'; +filename = 'PAM4_56_'; M = 4; -Bits = load([foldername, filesep, filename, 'bits'],'Bits'); +Bits = load([foldername, filesep, filename, 'bits_iatten_0'],'Bits'); Bits = Bits.Bits; -Symbols = load([foldername, filesep, filename, 'symbols'],'Symbols'); +Symbols = load([foldername, filesep, filename, 'symbols_iatten_0'],'Symbols'); Symbols = Symbols.Symbols; -all_signals = load([foldername, filesep, filename, 'best_rx_signals']); -all_signals = all_signals.all_signals; +% all_signals = load([foldername, filesep, filename, 'best_rx_signals']); +% all_signals = all_signals.all_signals; stuff = load([foldername,filesep,filename,'wh']); wh = stuff.obj;