Many changes for 400G DSP

Minimal Example
...

projects/HighSpeedExperiment_2024/single_auswertung_10km.m

@@ -16,6 +16,10 @@ l = 6;
 for m = 1:numel(M_vals)
     sgtitle(['Lambda: ',num2str(lambda_vals(l)),' nm'])
     %for l = 1:numel(lambda_vals)
+    ber_vnle = [];
+    ber_vnle_mlse= [];
+    ber_db= [];
+    ber_db_enc= [];
         for b = 1:numel(bitrate_vals)
 
             M_choose = M_vals(m);