LMS adaptive filtering with /spl Sigma//spl Delta/ modulated input signals

Author

Pfann, Eugen ; Stewart, Robert W.

Author_Institution

Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK

Volume

5

Issue

4

fYear

1998

fDate

4/1/1998 12:00:00 AM

Firstpage

95

Lastpage

97

Abstract

A new multibit multiplier free structure for a least mean squares (LMS) algorithm with /spl Sigma//spl Delta/ modulated input signals is proposed. An additional filter in the error path is necessary to allow adaptation of the filter. Simulation results for system identification demonstrate that the performance of described design is comparable to the performance of an equivalent pulse code modulated (PCM) system.

Keywords

adaptive filters; adaptive signal processing; filtering theory; identification; least mean squares methods; sigma-delta modulation; signal sampling; /spl Sigma//spl Delta/ modulated input signals; LMS adaptive filtering; PCM; error path; filter adaptation; filter design; least mean squares algorithm; multibit multiplier free structure; oversampled rate; performance; pulse code modulated system; simulation results; system identification; Adaptive filters; Baseband; Delay; Delta modulation; Finite impulse response filter; Least squares approximation; Phase change materials; Pulse modulation; Signal processing; Signal processing algorithms;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/97.664177

Filename

664177