- - = Let X[k] be the 4-point discrete Fourier transform (DFT) of a periodic sequence whose one period is x[n] = { a,–1,

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Let X K Be The 4 Point Discrete Fourier Transform Dft Of A Periodic Sequence Whose One Period Is X N A 1 1 (55.92 KiB) Viewed 36 times

- - = Let X[k] be the 4-point discrete Fourier transform (DFT) of a periodic sequence whose one period is x[n] = { a,–1, 0, b}, such that X[7] = A +j, and X[2] = 5 + Bj, where 0] + a, b, A, B ER. (a) Find the values of a, b, A and B.

(b) Find Ř[k] the 4-point discrete-time Fourier series (DTFS) of x[n] for k = -1,0,1,2. =