Design of pseudo-QMF banks with rational sampling factors using several prototype filters

Author

Argenti, Fabrizio ; Brogelli, Benedetto ; Re, Enrico Del

Author_Institution

Dept. di Ingegneria Electron., Univ. di Firenze, Italy

Volume

46

Issue

6

fYear

1998

fDate

6/1/1998 12:00:00 AM

Firstpage

1709

Lastpage

1715

Abstract

A method is presented for designing filter banks that allow the spectrum of a signal to be split into nonuniform width subbands. The filters of the banks are obtained by the cosine modulation of more than one prototype. The method uses the cancellation of the main aliasing component of the reconstructed signal. This imposes constraints on the prototypes that become dependent on each other. The procedure can be applied to banks with both integer and rational decimation factors. Numerical examples are presented to show the effectiveness of the design procedure

Keywords

band-pass filters; filtering theory; modulation; network synthesis; quadrature mirror filters; signal reconstruction; signal sampling; aliasing component cancellation; cosine modulation; integer decimation factor; nonuniform filter banks design; nonuniform width subbands; prototype filters; pseudo-QMF banks design; rational decimation factor; rational sampling factors; reconstructed signal; spectrum splitting; Chirp; Filter bank; Frequency estimation; Frequency modulation; Matrices; Polynomials; Prototypes; Sampling methods; Signal processing; Signal processing algorithms;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.678502

Filename

678502