## spectral factorization

I am trying to find some examples on how to compute a spectral factorization for a given transfer function for MIMO systems. I currently found only the exercises, but not how you could actually solve them; i.e compute a spectral factorization for:

$$G(s) = \begin{pmatrix}\frac{1}{s}\\ \frac{s-1}{s+1}\end{pmatrix}$$

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