Re: Frequency spectrum of IFFT output

[wes saunders]

Thank you for your help. I read my post again and I admit that it was
really confusing. So, I will try to make my question more clear.
I am trying to make a multiplexer using IFFT. Input signal is array of
complex numbers which represents complex weight for corresponding
sinusoidal basis function in frequency domain. IFFT multiplexs those
sinusoidal functions and presents signal in time domain. Signal is
additionally proccessed and then
displayed as output array of complex numbers.
I need graph presentation of that output signal. How can I present
signal which is array of complex numbers in time domain? Is it
possible to make graph presentation of frequency spectrum of that
signal and if it's possible, how?

Frequency spectrum of IFFT output

[wes saunders]

Output of IFFT block is summation of N orthogonal sinusoids. These
sinusoids each have different frequency and the lowest is 0 (DC). In
reality output is array of complex numbers which represent complex
weight for corresponding sinusoidal basis function. I neeed to know
how to present output signal in frequency domain spectrum. I'm
confused with complex numbers. Anybody knows solution to this problem?