ss_mlsrs.m

来自「用matlab语言实现Goldsequence产生」· M 代码 · 共 17 行

function [seq]=ss_mlsrs(connections)
%[seq]=ss_mlsrs(connections)
%    SS_MLSRS generates the maximal length shift-register sequence when the
%    shift-register connections are given as input to the function. A
%    "zero" means not connected, whereas a "one" represents a connection.
m=length(connections);
L=2^m-1;                         %length of the shift register sequence requested
registers=[zeros(1,m-1) 1];       %initial register contents
seq(1)=registers(m);             %first element of the sequence
for i=2:L
    new_reg_cont(1)=connections(1)*seq(i-1);
    for j=2:m
        new_reg_cont(j)=registers(j-1)+connections(j)*seq(i-1);
    end
    registers=new_reg_cont;      %current register contents
    seq(i)=registers(m);         %the next element of the sequence
end