Code covered by the BSD License  

Highlights from
MATLAB for Digital Communication

image thumbnail
from MATLAB for Digital Communication by Won Yang
The MATLAB programs in "MATLAB/Simulink for Digital Communication" authored by Won Y. Yang et. al

[pemb,nombe,notmb]=TCM1(Gc,Constellation,SNRbdB,Target_no_of_error) 
function [pemb,nombe,notmb]=TCM1(Gc,Constellation,SNRbdB,Target_no_of_error)
if nargin<4, Target_no_of_error=50; end
[K,N]=size(Gc); M=2^N; Rc=K/N;
Nf=288; % Number of bits per frame
Nmod=Nf/K; % Number of symbols per modulated frame
SNRb=10.^(SNRbdB/10); SNRbc=SNRb*Rc; 
sqrtSNRc=sqrt(2*N*SNRbc); % Complex noise per K=Rc*N-bit symbol
nombe=0;   MaxIter=1e6; 
for iter=1:MaxIter
   msg=randint(1,Nf); % Message vector
   coded = TCM_encoder1(Gc,msg,Constellation); % TCM encoding
   r= coded +(randn(1,Nmod)+j*randn(1,Nmod))/sqrtSNRc; 
   decoded= TCM_decoder1(Gc,r,Constellation);
   nombe = nombe + sum(msg~=decoded(1:Nf));  %
   if nombe>Target_no_of_error, break; end
end
notmb=Nf*iter; % Number of total message bits
pemb=nombe/notmb; % Message bit error probability

Contact us