Optimal variable step LMS look-up-table plus transversal filter nonlinear echo cancellers

Author

Weruaga-Prieto, L. ; Cid-Sueiro, J. ; Figueiras-Vidal, A.R.

Author_Institution

DSSR, Ciudad Univ., Madrid, Spain

Volume

4

fYear

1992

fDate

23-26 Mar 1992

Firstpage

229

Abstract

An optimal least-mean-square (LMS) algorithm is presented to be used with a lookup-table plus transversal filter adaptive echo canceller that has independent steps for the non-overlapped and overlapped parts of the transversal structure. Its advantage over previous schemes and algorithms used with this family of structures is presented. A suboptimal switched step version is discussed. Some simulation examples illustrate the performances of these schemes

Keywords

adaptive filters; digital filters; echo suppression; filtering and prediction theory; least squares approximations; table lookup; lookup-table plus transversal filter adaptive echo canceller; nonlinear echo cancellers; optimal variable-step LMS algorithm; Adaptive filters; Convergence; Decision support systems; Echo cancellers; Finite impulse response filter; Least squares approximation; Performance analysis; Switches; Telecommunication standards; Transversal filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on

Conference_Location

San Francisco, CA

ISSN

1520-6149

Print_ISBN

0-7803-0532-9

Type

conf

DOI

10.1109/ICASSP.1992.226444

Filename

226444