rx_ldpc_decode.m

此代码是ＬＤＰＣ码进行BP算法的重要参考代码

function ldpcdec_output=rx_ldpc_decode(ldpcdec_input, MaxIter)

global rows;
global cols;
global h1i;
global h1j;
global rearranged_cols;

inlen=length(ldpcdec_input);
wordnum=fix(inlen/cols);

ldpcdec_output=zeros(1,wordnum*(cols-rows));

for wordcnt=1:wordnum

    current_word=ldpcdec_input((wordcnt-1)*cols+1:(wordcnt-1)*cols+cols);

    [vhat iter]=ldpcdec(current_word,h1i,h1j,rows,cols,MaxIter);
    vhat1=vhat(rearranged_cols);
    uhat=vhat1(1:cols-rows);

    ldpcdec_output((wordcnt-1)*(cols-rows)+1:wordcnt*(cols-rows))=uhat;
end