A continuous-time signal xc(t) is bandlimited to 5 kHz; i.e., xc(t) is sampled with period T , producing the sequence x[n] = xc(nT ). To examine the spectral properties of the signal, we compute the N-point DFT of a segment of N samples of x[n] using a computer program that requires N = 2v, where v is an integer.
Determine the minimum value for N and the range of sampling rates
such that aliasing is avoided, and the effective spacing between DFT values is less than 5 Hz; i.e., the equivalent continuous-time frequencies at which the Fourier transform is evaluated are separated by less than 5 Hz.
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