An alternative DFE adaptation method

Author

Chen, W.Y.

Author_Institution

Bell Communications Res., Morristown, NJ, USA

Volume

4

fYear

1992

fDate

23-26 Mar 1992

Firstpage

529

Abstract

The decision feedback channel equalizer (DFE) was introduced for dispersive communication channels for its better performance over the linear channel equalizer. A DFE consists of a feedforward filter (FFF) and a feedback filter (FBF). Their filter coefficients can be estimated with the conventional least mean square (LMS) algorithm. While the optimal performance of the DFE has been praised in many studies, its initial convergence behavior is not as well studied. The convergence of the DFE is first analyzed. Based on the analysis, an alternative DFE adaptation method is proposed. The new method will significantly reduce the required initial convergence time with a little more computation power

Keywords

adaptive filters; convergence; digital filters; equalisers; feedback; least squares approximations; telecommunication channels; adaptation method; convergence; decision feedback channel equalizer; dispersive communication channels; feedback filter; feedforward filter; least mean square; Convergence; DSL; Decision feedback equalizers; Dispersion; Field-flow fractionation; Filters; Least squares approximation; Signal processing algorithms; Tail; Telephony;

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.1992.226394

Filename

226394