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From: david on 5 Jul 2010 09:01
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
From: Wayne King on 5 Jul 2010 10:05
"david " <int78005(a)stud.uni-stuttgart.de> wrote in message <i0sl2g$4vk$1(a)fred.mathworks.com>...
> 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

Hi David, I'm not entirely sure from your description exactly what you need to do, but xcorr in the Signal Processing Toolbox returns the estimated cross correlation sequence.

Wayne
From: david on 5 Jul 2010 10:31
Hi Wayne,
I have a signal structured as follows, synchro + data, but it repeats periodically so i know how is my signal of synchronization and i want in my file to detect the synchronization parts.
thank you
From: david on 5 Jul 2010 10:59
The question will be to find a pattern that i know in a signal that is corrupted by noise and is very big
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