Problem

We wish to compute the autocorrelation function of an upsampled signal, as indicated in...

We wish to compute the autocorrelation function of an upsampled signal, as indicated in Figure P4.57-1. It is suggested that this can equivalently be accomplished with the system of Figure P4.57-2. Can H2(e) be chosen so that Φ3[m] = Φ1[m]? If not, why not? If so, specify H2(e).

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