Thanks for the response I was thinking of a matlab program for
calculating cross correlation in a code used in Optical code division
multiple access



"Airy R. Bean" <airy.r.bean@lycos.co.uk> wrote in message news:<c2c3dj$1s6jkl$2@ID-217727.news.uni-berlin.de>...
> And, depending on the degree of correlation that you
> wish to do, the Fourier Series and Transform are a
> means of correlating your input signal against the
> domain of cisoidal signals.
> 
> "Fred Marshall" <fmarshallx@remove_the_x.acm.org> wrote in message
> news:KrKdnaO6--rMmNTdRVn-tA@centurytel.net...
> > "Mark Meso" <markmeso@hotmail.com> wrote in message
> > news:b109a098.0403051308.4144c740@posting.google.com...
> > > I am looking for a program which calculates cross correlation and auto
> > > correlation any help please?
> > You can substitute correlation by using convolution - just reverse one of
> > the inputs.  So, look for correlation programs also if that manipulation
>  is
> > within your scope.

And, depending on the degree of correlation that you
wish to do, the Fourier Series and Transform are a
means of correlating your input signal against the
domain of cisoidal signals.

"Fred Marshall" <fmarshallx@remove_the_x.acm.org> wrote in message
news:KrKdnaO6--rMmNTdRVn-tA@centurytel.net...
> "Mark Meso" <markmeso@hotmail.com> wrote in message
> news:b109a098.0403051308.4144c740@posting.google.com...
> > I am looking for a program which calculates cross correlation and auto
> > correlation any help please?
> You can substitute correlation by using convolution - just reverse one of
> the inputs.  So, look for correlation programs also if that manipulation
is
> within your scope.

"Mark Meso" <markmeso@hotmail.com> wrote in message
news:b109a098.0403051308.4144c740@posting.google.com...
> I am looking for a program which calculates cross correlation and auto
> correlation any help please?

A "program" of what kind?  There is Matlab and its clones, Scilab and GNU
Octave that will do it rather readily.  There must also be math routines in
your favorite language if that's what you mean.  I think Intel's math
library is the most reasonably priced and likely to be pretty good for their
processors.

The only difference between cross and auto is the inputs.....

You can substitute correlation by using convolution - just reverse one of
the inputs.  So, look for correlation programs also if that manipulation is
within your scope.

Fred