channel coding using convolutional code
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clc;
clear;
N=20;
BITS=randint(1,N);
constlength=9;
traceback=5*constlength;
polynomial=[657 435];
trellis = poly2trellis(constlength,polynomial);
x=convenc(BITS,trellis);
SNR=0:2:30;
r1=(pskmod(x,2));
%for k=1:16
Rx_sequence= awgn(r1,0,'measured'); %signal with noise
SNR_of_level=0
r2=pskdemod(Rx_sequence,2);
error=xor(x,r2); %getting number of errors
number_errors=sum(error)
%end
l=vitdec(r2,trellis,traceback,'trunc','hard')
what's wrong
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Antworten (1)
Image Analyst
am 15 Dez. 2012
Well, the failure to tell us what those functions (vitdec, etc.) are or what toolbox they can be found in is one thing that's wrong. Lack of sufficient comments is another. Not telling us what causes you to think there's something wrong is a third. There could be more....
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