cnv_encd.m

来自「强烈推荐好用的卷积码编码」· M 代码 · 共 21 行

%function output=cnv_encd(g,k0,input)
g=[1 0 0;1 0 1;1 1 1];
k0=1;
input=[1 0 0 1 1 1 0 0 1 1 0 0 0 0 1 1 1];
if rem(length(input),k0)>0
    input=[input,zeros(size(1:k0-rem(length(input),k0)))];
end
n=length(input)/k0;
if rem(size(g,2),k0)>0
    error('Error,g is not of the right size.');
end
l=size(g,2)/k0;
n0=size(g,1);
u=[zeros(size(1:(l-1)*k0)),input,zeros(size(1:(l-1)*k0))];
u1=u(l*k0:-1:1);
for i=1:n+l-2
    u1=[u1,u((i+l)*k0:-1:i*k0+1)];
end
uu=reshape(u1,l*k0,n+l-1);
output=reshape(rem(g*uu,2),1,n0*(l+n-1));