Many changes here and there. I lost track... :-(

Current work is on MLSE and SD Decoding etc. MLSE is currently not 100% working, the scalings are maybe off?!

Functions/EQ_visuals/showEQNoisePSD.m

@@ -22,7 +22,7 @@ end
 
     % Ensure the figure is ready before calling spectrum
     eq_noise.spectrum("displayname", options.displayname, "fignum", fig.Number, "normalizeTo0dB", 1,"color",options.color);
-    title('Noise of soft decision signal (not MLSE)')
+    title('EEN')
 
     if ~isnan(options.postfilter_taps)
         % Hold on to the figure for further plotting
@@ -43,5 +43,6 @@ end
     end
 
     xlim([-eq_noise.fs/2* 1e-9 eq_noise.fs/2* 1e-9]);
+    ylim([-15, 0]);
 
 end

Functions/EQ_visuals/showEQfilter.m

@@ -20,6 +20,12 @@ end
     f = f(1:half_nfft);
     H = H(1:half_nfft);
 
+    H_mag = abs(H);
+    H_norm = H_mag ./ max(H_mag);
+
+    H_db = 20*log10(H_norm);
+    H_db = H_db - min(H_db);
+
     % Determine the figure number to use or create a new figure
     if isnan(options.fignum)
         fig = figure; % Create a new figure and get its handle
@@ -30,7 +36,7 @@ end
     % Magnitude response (in dB)
     subplot(2,1,1);
     hold on
-    plot(f.*1e-9, 20*log10(abs(1./H)),'DisplayName',options.displayname);
+    plot(f.*1e-9, H_db,'DisplayName',options.displayname);
     title('(Inverted) Magnitude Response of FFE Filter');
     xlabel('Frequency (GHz)');
     ylabel('Magnitude (dB)');

Functions/EQ_visuals/showLevelHistogram.m

@@ -27,6 +27,7 @@ end
     received_sd = NaN(numel(constellation),length(ref_symbols));
     lvlcol = cbrewer2('Paired',numel(constellation)*2);
     lvlcol = lvlcol(2:2:end,:);
+    lvlcol = linspecer(numel(constellation));
     % lvlcol = cbrewer2('Set1',numel(constellation));
     for lvl = 1:numel(constellation)
         %Separate the equalized signal into the