?? covariance.m
字號:
function coresult=covariance(x,N,tal)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% x 采樣信號樣本
% N 周期所含樣本數
% tal 延遲
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
T=length(x);
S=floor(T/N);
y=[x,zeros(1,T)]
Rc(N,N)=0;
for m=1:1:N
for n=1:1:N
for s=0:1:S-1
Rc(m,n)=Rc(m,n)+y(n+s*N)*y(n+s*N+tal)*y(m+s*N)*y(m+s*N+tal);
end
end
end
coresult=Rc/S
coresult=inv(coresult)
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