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Many changes towards simulation of JLT and once again the evaluation of the Highspeed data from Lab experiments 2024

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Silas Oettinghaus
2025-07-09 10:50:53 +02:00
parent 9ce23c4a10
commit 2cff29f239
35 changed files with 1874 additions and 549 deletions
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64
Functions/EQ_structures/ffe.m
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@@ -36,6 +36,11 @@ if ~isempty(options.postFFE)
toc
end
try
ch_coefficients = arburg(eq_noise.signal,1);
channel_alpha = ch_coefficients(2);
end
% Hard decision on FFE output
eq_signal_hd = PAMmapper(M, 0).quantize(eq_signal_sd);
@@ -66,10 +71,15 @@ end
% Create FFE results structure
ffe_results = struct();
try
eq_.e = [];
eq_.e2 = [];
eq_.e3 = [];
eq_.b = [];
eq_.b2 = [];
eq_.b3 = [];
end
eq_.e = [];
eq_.e2 = [];
eq_.e3 = [];
ffe_results.config = Equalizerstruct();
ffe_results.config.eq = jsonencode(eq_);
ffe_results.config.equalizer_structure = int32(equalizer_structure.ffe);
@@ -95,7 +105,7 @@ ffe_results.metrics.GMI = gmi;
ffe_results.metrics.AIR = air;
ffe_results.metrics.EVM = evm_total;
ffe_results.metrics.EVM_level = evm_lvl;
ffe_results.metrics.Alpha = channel_alpha;
end
@@ -140,24 +150,40 @@ end
end
function displayAnalysis(eq_noise, eq_signal_sd, rx_signal, eq_, tx_symbols, M, postFFE)
% Display analysis plots and metrics
figure(336);
showEQNoisePSD(eq_noise, "fignum", 336, "displayname", 'Residual Noise after FFE');
% Display analysis plots and metrics
if ~isempty(postFFE)
showEQcoefficients('n1', postFFE.e, "displayname", 'Coefficients', 'fignum', 338);
end
% Initialize figure handles
% Corrected line - added tx_symbols as second positional argument
showLevelScatter(rx_signal.resample("fs_out", tx_symbols.fs), tx_symbols, "fignum", 100);
showEQfilter(eq_.e, eq_signal_sd.fs.*2);
warning off
showLevelScatter(eq_signal_sd, tx_symbols, "fignum", 101);
figure(gcf);hold on; plot(((1:length(eq_noise.signal)) / eq_noise.fs) * 1e6,movmean(eq_noise.signal,2000,1), 'LineWidth',3,'Color','black')
warning on
figure(341); clf;
showLevelHistogram(eq_signal_sd, tx_symbols, "fignum", 341);
showLevelHistogram(eq_signal_sd, tx_symbols, "fignum", 102);
warning off
figure(400); clf;
showLevelScatter(eq_signal_sd, tx_symbols, "fignum", 400);
showEQNoisePSD(eq_noise, "fignum", 103, "displayname", 'Residual Noise after FFE');
% Figure 2: Post-FFE coefficients (if available)
if ~isempty(postFFE)
showEQcoefficients('n1', postFFE.e, "displayname", 'Coefficients', 'fignum', 104);
end
try
figure(339);
showEQfilter(eq_.e_tr, eq_signal_sd.fs.*2,"displayname",'training','fignum',339);
showEQfilter(eq_.e, eq_signal_sd.fs.*2,"displayname",'dec. directed','fignum',339);
legend on
end
try
figure(240); hold on; plot(pow2db(movmean(eq_.debug_struct.error_tr',100)));ylim([-30,3]);title('error training');
figure(241); hold on; plot(pow2db(movmean(eq_.debug_struct.update_tr',100)));title('update step training');
figure(242); hold on; plot(pow2db(movmean(eq_.debug_struct.update',1000)));title('update step dd');
end
% eq_signal_sd.eye(eq_signal_sd.fs,M,"displayname",'Eye','fignum',105);
figure(401); clf;
showLevelScatter(rx_signal.resample("fs_out", tx_symbols.fs), tx_symbols, "fignum", 401);
warning on
end