Filterbank design for oversampled subband adaptive filtering structures

Author

Petraglia, M.R. ; Piber, P.R.V.

Author_Institution

Fed. Univ. of Rio de Janeiro, Brazil

Volume

39

Issue

23

fYear

2003

Abstract

A simple design procedure for uniform DFT filterbanks used in oversampled subband adaptive filtering structures is presented. The analysis prototype filter is designed with extended bandwidth to obtain fast convergence. The synthesis prototype filter is then optimised to reduce the mean square error. The resulting improvements in the convergence performance are verified through computer simulations

Keywords

FIR filters <oversampled subband adaptive filtering structs., filterbank design>; adaptive filters <oversampled subband adaptive filtering structs., filterbank design>; convergence of numerical methods <oversampled subband adaptive filtering structs., filterbank design>; least mean squares methods <oversampled subband adaptive filtering structs., filterbank design>; low-pass filters <oversampled subband adaptive filtering structs., filterbank design>; adaptive filtering structures; block LMS algorithm; computer simulations; echo impulse response; fast convergence; lowpass filter; mean square error; oversampled subband filtering structures; polyphase components; prototype filter; simple design procedure; synthesis filters; uniform DFT filterbanks; weighted overlap-add method;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20031056

Filename

1248994