rs_decode_syndrome.m

Reed Solomon码的编译码器MATLAB仿真程序

function synd_x=rs_decode_syndrome(r_x)
%本函数实现伴随多项式的计算
%r_x为接收多项式，synd_x为伴随多项式
N = length(r_x);
synd_x1=zeros(1,6);
for i=1:length(synd_x1)
    for j = 1:N
        synd_x1(i) = rs_symboladd( rs_symbolmultiple( r_x(j),2^(i*(j-1))),synd_x1(i));
    end
end
temp=zeros(1,7);
temp(1)=1;
for i=1:6
    temp(i+1)=synd_x1(i);
end
synd_x1=zeros(1:7);
synd_x1=temp;

j=0;
for i=1:length(synd_x1)
    if synd_x1(i)~=0
       j=j+1;
   end
end
synd_x=zeros(1,j);
synd_x=synd_x1(1:j);