How to do correlation between signals in Matlab?

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sirdivi

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Hi i have a signal that periodically repeat a structure, i need to find in that signal the structure, which i know previously. For doing that i was thinking about doing the correlation between the big signal and the signal of interest but i do not know how to implement it in matlab.
please help me!
thank you very much
 

Re: Correlation

Use the cross correlation command in MATLAB i-e
xcorr(y,z).
The peak will indicate the presence of signal of interest in that signal.
 

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