- #1
Linder88
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Thread moved from the technical Mth forums, so no Homework Template is shown
Homework Statement
The assignment is to find a closed-form expression for the FIR least squares inverse filter of length N for each of the following systens
Homework Equations
$$
1.G( z ) = \frac{1}{1 - \alpha z^{-1}}; | \alpha | < 1 \\
2. G(z) = 1 - z^{-1} \\
3. G(z) = \frac{\alpha - z^{-1}}{1 - \alpha z^{-1}}; |\alpha| < 1
$$
The Attempt at a Solution
Anybody have any ideas, I can't really understand what is meant by close-form either from the book or from wikipedia. My guess is:$$
1. G( z ) = \frac{z}{z - \alpha} \\
2. G( z ) = z-1 \\
3. G( z ) = \frac{z - 1 }{z - \alpha}
$$
Every helping hand is welcome
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