conv_encoder.asv

OFDM的PHY发射端matlab实现程序

function [codeout,code]=conv_encoder(inputbits)
msg1=inputbits;
%msg1=[1 0 0 1 1 0 1 1];
appendzeros=zeros(1,6);
j=1;p=1;
%msg=[msg1(1,:),appendzeros;msg1(2,:),appendzeros]
msg=[msg1,appendzeros];                 %加零使编码器能够回到0状态
L=7;                                    %约束长度
CodeGenerator=[133 171];                %生成多项式
trellis=poly2trellis(L,CodeGenerator);  %转换成网格描述
[code,final_state]=convenc(msg,trellis);%卷积编码
n=length(code);
codeout=reshape(code,2,n/2);