You know how to do the autocorrelation and cross-correlation.
$ r_{xy}(n)=h(n)*r_{xx}(n) $ - Cross Correlation
$ r_{yy}(n)=h(-n)*h(n)*r_{xx}(n) $ - Autocorrelation
$ * $ means convolution.
If I am wrong, please reply ASAP.--Kim415 09:59, 13 April 2009 (UTC)
I think that "Cross Correlation" is $ r_{xy}(n)=h(-n)*r_{xx}(n) $
not,$ r_{xy}(n)=h(n)*r_{xx}(n) $.
Because,$ r_{xy}(n)=x(n)*y(-n)=x(n)*(x(-n)*h(-n))=r_{xx}(n)*h(-n) $
You can verify that in Proakis's book (page #127)
--Kim682 16:24, 23 April 2009
