On the realizability of biorthogonal, m-dimensional two-band filter banks

Abstract
In this paper we show an algebraic approachfor the design of ladder structures for causal bi-orthogonalfilter banks. The key ingredient of the approach is knownin literature as Euclid's algorithm. Using this algorithm wederive some strong result on the design freedom for ladderstructures. In particular we show that the dimensionality ofthe problem plays an important role. We end by with someconjectures concerning the extensions to multi-channel andnon-causal filter banks.Keywords---...

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