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changes from zurich; my mac

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Silas
2025-02-20 05:31:05 +01:00
parent d099efea03
commit cf94b67828
13 changed files with 197 additions and 148 deletions
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13
Functions/EQ_structures/vnle.m
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@@ -22,6 +22,7 @@ function [eq_package] = vnle(eq_,M,rx_signal,tx_symbols,tx_bits,options)
tx_bits
options.precode_mode db_mode
options.showAnalysis = 0
options.eth_style = 0;
end
%FFE or VNLE
@@ -46,7 +47,7 @@ function [eq_package] = vnle(eq_,M,rx_signal,tx_symbols,tx_bits,options)
tx_symbols_precoded = Duobinary().encode(tx_symbols);
tx_symbols_precoded = Duobinary().decode(tx_symbols_precoded);
tx_bits = PAMmapper(M,0).demap(tx_symbols_precoded);
tx_bits = PAMmapper(M,0,"eth_style",options.eth_style).demap(tx_symbols_precoded);
case db_mode.db_discard
@@ -64,23 +65,31 @@ function [eq_package] = vnle(eq_,M,rx_signal,tx_symbols,tx_bits,options)
end
rx_bits = PAMmapper(M,0).demap(eq_signal_hd);
rx_bits = PAMmapper(M,0,"eth_style",options.eth_style).demap(eq_signal_hd);
[~,numErrors,ber,~] = calc_ber(rx_bits.signal,tx_bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
[evm_total,evm_lvl] = calc_evm(eq_signal_sd,tx_symbols);
[inf_rate] = calc_air(eq_signal_sd,tx_symbols,"skip_front",10000,"skip_end",10000);
snr(eq_signal_sd.signal,eq_noise.signal)
eq_package.ber_vnle = ber;
eq_package.evm_total = evm_total;
eq_package.evm_lvl = evm_lvl;
eq_package.inf_rate_vnle = inf_rate;
if options.showAnalysis
fprintf(['VNLE EVM lvl: ',repmat('%.3f ',1,numel(evm_lvl)),' \n'],evm_lvl);
fprintf('VNLE BER: %.2e \n',ber);
showEQNoiseSNR(tx_symbols,eq_noise,"displayname",'SNR after VNLE','fignum',301);
showLevelHistogram(eq_signal_sd,tx_symbols,"fignum",302);
end
end

2
Functions/EQ_structures/vnle_postfilter_mlse.m
View File

@@ -99,7 +99,7 @@ end
fprintf('MLSE BER: %.2e \n',ber_mlse);
showEQNoisePSD(eq_noise,"fignum",336,"displayname",'VNLE+DFE','postfilter_taps',pf_.coefficients);
showEQNoisePSD(eq_noise,"fignum",336,"displayname",'Residual Noise after VNLE','postfilter_taps',pf_.coefficients);
rx_signal.spectrum("normalizeTo0dB",1,"fignum",337,"displayname",'Rx Signal');

25
Functions/EQ_visuals/showEQNoiseSNR.m
View File

@@ -1,7 +1,7 @@
function showEQNoiseSNR(tx_signal, rx_signal, options)
function showEQNoiseSNR(eq_signal, noise_signal, options)
arguments
tx_signal
rx_signal
eq_signal
noise_signal
options.fs_tx
options.fs_rx
options.fignum (1,1) double = NaN % Default to NaN if not provided
@@ -16,13 +16,13 @@ end
fig = figure(options.fignum); % Use the specified figure number
end
if isa(tx_signal,'Signal')
options.fs_tx = tx_signal.fs;
tx_signal = tx_signal.signal;
if isa(eq_signal,'Signal')
options.fs_tx = eq_signal.fs;
eq_signal = eq_signal.signal;
end
if isa(rx_signal,'Signal')
options.fs_rx = rx_signal.fs;
rx_signal = rx_signal.signal;
if isa(noise_signal,'Signal')
options.fs_rx = noise_signal.fs;
noise_signal = noise_signal.signal;
end
@@ -37,10 +37,10 @@ end
% Ensure the figure is ready before calling spectrum
title('SNR of received Signal')
fft_length = 2^(nextpow2(length(tx_signal))-7);
fft_length = 2^(nextpow2(length(eq_signal))-7);
[s_lin,w] = pwelch(tx_signal,hanning(fft_length),fft_length/2,fft_length,options.fs_tx,"centered","psd","mean");
[n_lin,w] = pwelch(rx_signal,hanning(fft_length),fft_length/2,fft_length,options.fs_rx,"centered","psd","mean");
[s_lin,w] = pwelch(eq_signal,hanning(fft_length),fft_length/2,fft_length,options.fs_tx,"centered","psd","mean");
[n_lin,w] = pwelch(noise_signal,hanning(fft_length),fft_length/2,fft_length,options.fs_rx,"centered","psd","mean");
w = w.*1e-9;
snr_dbm = 10*log10(s_lin./n_lin);
@@ -48,6 +48,7 @@ end
% figure(231)
hold on
plot(w,snr_dbm,'DisplayName','SNR','LineWidth',0.5,'Color',options.color);
yline(mean(snr_dbm),'HandleVisibility','off','Color',options.color);
xlabel("Frequency in GHz");
edgetick = 2^(nextpow2(options.fs_tx*1e-9));