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电信和无线电工程
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN 打印: 0040-2508
ISSN 在线: 1943-6009

卷:
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电信和无线电工程

DOI: 10.1615/TelecomRadEng.v56.i12.50
8 pages

Optimization of Perfect Reconstruction Cosine-Modulated Filter Banks: Fast Algorithm

Oscar G. Ibarra-Manzano
Guanajuato University, FIMEE, 36730, Salamanca, Gto, Mexico
Yuriy V. Shkvarko
Visiting professor in the FIMEE, University of Guanajuato, Mexico
Rene Jaime-Rivas
Head of FIMEE at the University of Guanajuato, 36730 Salamanca, Gto. Mexico
Jose A. Andrade-Lucio
Facultad de Ingenieria Mecánica, Eléctrica y Electrónica, Universidad de Guanajuato. A.P. 215-A, 36730. Salamanca, Gto., México
Gordana Jovanovic-Dolecek

ABSTRACT

This paper presents an efficient algorithm for the design of M-channel cosine-modulated filter banks satisfying perfect reconstruction (PR). It is well known that FIR filter bank satisfying the PR properly can be obtained by cosine modulation of a linear-phase prototype of length N=2mM (where M is the number of channels and m is an arbitrary positive integer) by minimizing of the stop-band energy of this prototype filter. Our algorithm needs only a few iterations to obtain a solution at minimizing procedure requiring approximately m(M/2) parameters to be optimized. Some design examples and comparisons are included.


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