Center frequency estimation of a band limited signal

Hello,

I want to determine the center frequency of a band limited signal. It is not possible to determine this frequency by observing the spectrum. Is there any MATLAB routine for this estimation?

-saima

[Wayne King]

Can you elaborate on why it is not possible to determine this by observing the spectrum?

[saima]

Because, in the center region of the band I have a so many peaks

Answer 1

[Bjorn Gustavsson]

Filling in a couple of blanks in your question I get to the guess that you're undersampling your band-limited signal at regular intervalls. For that situation you'll have the zoom-fft method. There are 2 contributions on the matlab central file exchange, just search for 'zoom fft'.

HTH