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Iterative design of two-channel IIR perfect construction QMG filters

✍ Scribed by El-Gayed, N. A.; Abdel-Rahman, M.; Fahmy, M. F.

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 125 KB
Volume: 26
Category: Article
ISSN: 0098-9886
DOI: 10.1002/(sici)1097-007x(199809/10)26:5<453::aid-cta24>3.0.co;2-3

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✦ Synopsis

A simple rapidly convergent method is described for the design of two-channel IIR perfect reconstruction quadrature mirror filters. For any prescribed characteristic, it has been shown how one can construct a stable two-channel IIR banks, starting from any random transmission zero locations. A simple rapidly convergent search algorithm is also described for the determination of the exact locations of these transmission zeros, such that the filter has equiripple pass and stop responses as well as almost constant group delay. Illustrative examples are also given to show that the proposed design method competes very well with the existing design methods.

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This paper presents two rapidly convergent methods for the design of two-channel odd degree linear phase FIR banks as well as IIR "lter banks. In both cases, zeros of arbitrary multiplicity are assumed at z"!1, to ensure regularity of the generated wavelet basis. It is shown that in the FIR case, th