mul_gf2.m

来自「本源码用于LDPC的编码算法。运用LDPC编码的基本原理」· M 代码 · 共 29 行

%*************************************************************%
%函数名：mul_GF2
%功能：  实现矩阵A*B
%参数：  矩阵A,B
%返回值：A*B
%*************************************************************%
function [c]=mul_GF2(A,B)
%[c]=mul_GF2(A,B)
dim=size(A);
m=dim(1);%no of rows of the first matrix
n=dim(2);%no of cols of the first matrix and no of rows of 2nd matrix
dim=size(B);
p=dim(2);%no of cols of the second matrix

for i=1:m
   for j=1:p
      temp1=A(i,1:n);
      temp2=B(1:n,j);
      prod=temp1.*(temp2.');
      sum1=0;
      for k=1:n
         sum1=xor(sum1,prod(k));
      end
      c(i,j)=sum1;
   end
end