Solving equation by using 8-point FFT

[scdoro]

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

 

[fiquran]

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 = G + WH with the replaced G and X values.