autocorr.m

此程序为DS-CDMA链路中加入基于子空间的PASTd多用户检测方法。系统中采用m序列阔频

% Program 5-1
% autocorr.m
% 
% Autocorrelation function of a sequence
%
% Programmed by yixoingshu,2007.8.9
%
function [out]=autocorr(indata,tn)
% indata: input sequence
% tn     :  number of period
% out   :  atuocorrelation data
%--------------------------------------------------------------------------
if nargin<2
    tn=1;
end
N=length(indata);
out=zeros(1,N*tn);

for ii=0:N*tn-1
    out(ii+1)=sum(indata.*shift(indata,ii,0));
end

% end of file