NDLI: Design of linear-phase quadrature mirror filters with powers-of-two coefficients

Content Provider	IEEE Xplore Digital Library
Author	Charng-Kann Chen Ju-Hong Lee
Copyright Year	1992
Abstract	This paper considers the design of linear-phase quadrature mirror filters (QMF's) with powers-of-two coefficients. A design method based on a recently developed weighted least-squares (WLS) algorithm is presented. First, we design QMF's with continuous coefficients using the WLS algorithm. This design process provides two favorable design results that the prototype analysis filter has quasi-equiripple stopband response and the resulting QMF bank shows quasi-equiripple reconstruction error behavior. To avoid the effect of nonuniformly distributed coefficient grid due to discretization of the filter coefficients, a procedure is then performed for obtaining an appropriate filter gain factor. Finally, utilizing the resulting error weighting function obtained by the WLS algorithm, we propose an efficient discrete optimization process to obtain a discrete solution in the minimax optimal sense. Design examples demonstrating the effectiveness of the proposed method are included.<>
Sponsorship	IEEE Circuits and Systems Society
Starting Page	445
Ending Page	456
Page Count	12
File Size	1041706
File Format	PDF
ISSN	10577130
Volume Number	41
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-07-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mirrors Filter bank Finite impulse response filter Signal processing algorithms Image reconstruction Design methodology Signal processing Process design Prototypes Minimax techniques
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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