Changes from mwork PC.

PDP 2025

MPI analysis

new focus on database and SQL

Classes/04_DSP/Equalizer/FFE.m

@@ -101,6 +101,17 @@ classdef FFE < handle
             end
 
             x = [zeros(floor(obj.order/2),1); x; zeros(obj.order,1)];
+
+            if training
+                mask = ones(obj.order,1);
+            else
+                mask = zeros(obj.order,1);
+                mask(900:end) = 1;
+                mask(ceil(length(obj.e)/2)) = 1;
+            end
+
+            mask = ones(obj.order,1);
+
             
             for epoch = 1 : epochs
                 symbol = 0;
@@ -110,7 +121,7 @@ classdef FFE < handle
 
                     U = x(obj.order+sample-1:-1:sample);
 
-                    y(symbol,1) = obj.e.' * U;    % Calculating output of LMS  __ * |
+                    y(symbol,1) = (obj.e.*mask).' * U;    % Calculating output of LMS  __ * |
 
                     if training
                         d_hat(symbol,1) = d(symbol);  
@@ -129,7 +140,6 @@ classdef FFE < handle
                         normalizationfactor =  (U.' * U);
                         obj.e = obj.e - err(symbol) * U / normalizationfactor;    % Weight update rule of NLMS
                     end
-                    
 
                     obj.error(epoch,symbol) = err(symbol) * err(symbol)';  % Instantaneous square error