h_gen.m

LDPC码在TD-SCDMA系统中的应用仿真程序

function [h,A,B]=h_gen(rows,cols)

%%%%%%%%%%%%define dimension of the parity check matrix%%%%%%%% 
% rows=100; 
% cols=200; 
h=gen_ldpc(rows,cols);%generates a 100 x 200 H matrix( the IG parity 
                      %check matrix) 
[newh,rearranged_cols]=rearrange_cols(h); 
% newh holds the rearranged version of H and rearranged_cols holds 
%the rearrangement order of columns 
%%%%%%%%%%%%Get A and B matrices %%%%%%%%%%%%%%%% 
for i=1:rows 
    for j=1:rows 
        A(i,j)=newh(i,j); 
    end 
end 
for i=1:rows 
    for j=rows+1:cols 
        B(i,j-rows)=newh(i,j); 
    end 
end 

return
%%%%%%%%%%%%%%message bits%%%%%%%%%%%%%%%%%%%%%