m_sequence.m

该代码产生m序列,能在扩频通信中的信息的扰码和扩频.

function [mseq]=m_sequence(fbconncection);
n=length(fbconnection);
N=2^n-1;
register=[zeros(1,n-1) 1];    %定义移位寄存器的初始状态值
mseq(1)=register(n);
for i=2:N
    newregister(1)=mod(sum(fbconnection.*regiser),2);
    for j=2:n
        newregister(j)=register(j-1);
    end
    register=newregister;
    mseq(i)=register(n);
end