FFT

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scdoro

Joined: 12 Jan 2005
Posts: 87

21 Feb 2006 15:25 FFT

hi all

can some one guide me on how i can find the unknown for A,B,f1, and f2 by using an 8-point FFT? Should i be using DIF FFT or DIT FFT?

regards
scdoro

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fiquran

Joined: 10 Mar 2005
Posts: 103
Helped: 14

21 Feb 2006 15:46 Re: FFT

hmm,

first show that G(k) = G(k + N/2). N is 8 for this case. It is simple, just write down the equation for 8-point FFT. same way H(k) = H(k + N/2). Then write down the X(n) = G(n) + WH(n) with the replaced G(n) and X(n) values.