cc6.m

ldpc码中

function c6=cc6(H)
%c6=cc6(H)
%如果包含有6环，则c6=1，否则c6=0

dim=size(H);
cols=dim(2);

h1idx=zeros(6, cols);

%计算列重
for j=1:cols
   ind=find(H(:,j)==1);
   h1idx(1,j)=length(ind);
   h1idx(2:h1idx(1,j)+1,j)=ind;
end

c6=checkcycle6(h1idx);