New MPI mitigation schemes // Duobinary // Start of FTN schemes

Classes/01_transmit/PAMsource.m

@@ -9,6 +9,8 @@ classdef PAMsource
         fsym
         randkey
 
+        db_precode
+
         mrds_code
         mrds_blocklength
 
@@ -33,6 +35,8 @@ classdef PAMsource
                 options.fsym = 112e9;
                 options.randkey = 0;
 
+                options.db_precode = 0;
+
                 options.mrds_code = 0;
                 options.mrds_blocklength = 512;
 
@@ -90,6 +94,11 @@ classdef PAMsource
 
             symbols = PAMmapper(obj.M,0).map(bits);
             symbols.fs = obj.fsym;
+
+            if obj.db_precode
+                symbols = Duobinary().precode(symbols);
+                symbols = Duobinary().encode(symbols);
+            end
             
             if obj.mrds_code
                 symbols = MRDS_coding("blocklength",obj.mrds_blocklength).encode(symbols);