BCJR implementation

WDM code added (Pol Cont., Opt MUX/DEMUX, Opt Atten, DP_Fiber) -> the codebase is not optimized to always work with dp signals!

Functions/Metrics/calc_snr.m

@@ -39,6 +39,5 @@ function [snr_all, snr_per_level] = calc_snr(tx_signal, eq_noise)
         % Compute the SNR for these indices
         snr_per_level(i) = snr(tx_signal(idx), eq_noise(idx));
     
-        histogram(eq_noise(idx));
     end
 end

Functions/Metrics/count_error_bursts.m

@@ -21,8 +21,10 @@ function burst_count = count_error_bursts(err_pos, max_burst_length)
         
         % Check if the burst length exceeds any of the thresholds
         for i = 1:max_burst_length
-            if burst_length > i
+            if burst_length == i
                 burst_count(i) = burst_count(i) + 1;
+            else
+
             end
         end
     end