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A Design Method of Odd-Channel Linear-Phase Paraunitary Filter Banks with a Lattice Structure
Shogo MURAMATSU Hitoshi KIYA
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E81-A
pp.976-980 Publication Date: 1998/05/25 Online ISSN:
DOI: Print ISSN: 0916-8508 Type of Manuscript: Category: Digital Signal Processing Keyword: multirate filter banks, paraunitary system, linear-phase filter, subband image coding, non-linear optimization,
Full Text: PDF(337.6KB)>>
Summary:
In this letter, a design method of linear-phase paraunitary filter banks is proposed for an odd number of channels. In the proposed method, a non-linear unconstrained optimization process is assumed to be applied to a lattice structure which makes the starting guess of design parameters simple. In order to avoid insignificant local minimum solutions, a recursive initialization procedure is proposed. The significance of our proposed method is verified by some design examples.
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