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8. A continuous-time signal ma (t) has a band-limited spectrum Xa(jQ), as indicated below. Determine the smallest frequency FT that can be employed...

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(a) Ω1 = 100π, Ω2 = 150π (b) Ω1 = 160π, Ω2 = 250π


8. A continuous—time signal LEG (t) has a band—limited spectrum Xa (jg) as indicated below. Determine
the smallest frequency FT that can be employed to sample :Irafit) so that it can be fully recovered from
its sampled version $[n] for each of the following sets of values of the bandedges 91 and 92. Sketch
the Fourier transform of the sampled version $p(t) : 2:1 in; (RT)5 [t — nT) obtained by sampling malt) at the smallest sampling rate FT : 1/ T and the frequency response of the ideal reconstruction
filter needed to fully recover 11:3 (15) for each case.

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Answering part (a). Part... View the full answer


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