Cosine-modulated FIR filter banks satisfying perfect reconstruction: an iterative algorithm

Author

Ibarra-Manzano, Oscar G. ; Jovanovic-Dolecek, Gordana

Author_Institution

Dept. of Electr. Eng., Guanajuato Univ., Salamanca, Mexico

Volume

2

fYear

1999

fDate

1999

Firstpage

1061

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 property, can be obtained by cosine modulation of a linear-phase prototype of length N=2mM (M is the number of channels and m is an arbitrary positive integer) by minimizing of the stopband 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

Keywords

FIR filters; digital filters; filtering theory; iterative methods; M-channel filter banks; cosine-modulated FIR filter banks; iterative algorithm; linear-phase prototype; perfect reconstruction; stopband energy minimisation; Astrophysics; Filter bank; Finite impulse response filter; Image reconstruction; Iterative algorithms; Lattices; Optical filters; Optical signal processing; Prototypes; Signal processing algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1999. 42nd Midwest Symposium on

Conference_Location

Las Cruces, NM

Print_ISBN

0-7803-5491-5

Type

conf

DOI

10.1109/MWSCAS.1999.867819

Filename

867819