An ARMA process has an autocorrelation {?xx(m)} whose z-transform is given as(a) Determine the filter H(z) for

Question:

An ARMA process has an autocorrelation {?xx(m)} whose z-transform is given as(a) Determine the filter H(z) for generated {x(n)} from a white noise input sequence. Is H(z) unique? Explain.(b) Determine a stable linear whitening filter for the sequence {x(n)}.