FFT of a single real signal

FFT of a single real signal

Hi

I am trying to perform a power spectrum of a single real signal but I can only detect frequencies of up to 1/4 of the sampling frequency. I have tried using ippsFFTFwd_RToCCS_32f.

I am sure that it is possible to detect up to 1/2 of the sampling frequency, which is the Nyquist Limit.

I have tried, to use the even samples as my real array and the odd samples as my imaginary array. Using ippsFFTFwd_RToCCS_32f I dont seem to get any sensible results.

So the question is, is it possible to detect up to 1/2 of the sampling frequency using the ipps library and if so, how do I do it?

Many thanks

Mark

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