Realization of the LMS algorithm with /spl Sigma//spl Delta/ input signals

Author

Pfann, E. ; Stewart, R.W.

Author_Institution

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

Volume

1

fYear

1996

fDate

3-6 Nov. 1996

Firstpage

420

Abstract

A structure of an LMS-algorithm with /spl Sigma//spl Delta/ input signals is presented. The filter operates at the sampling frequency of the /spl Sigma//spl Delta/ signals but does not require more coefficients than an equivalent filter at the Nyquist rate. Decimation of the input signals is not required, although a low pass filter is required in the error path of the LMS algorithm. It is demonstrated that with a proper choice of this filter the proposed design can meet the performance of an equivalent PCM-LMS system.

Keywords

FIR filters; adaptive filters; filtering theory; least mean squares methods; low-pass filters; sigma-delta modulation; signal sampling; /spl Sigma//spl Delta/ input signals; LMS algorithm; Nyquist rate; design; error path; filter; low pass filter; performance; sampling frequency; structure; Adaptive filters; Baseband; Convolution; Cutoff frequency; Finite impulse response filter; IIR filters; Least squares approximation; Phase change materials; Signal design; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 1996. Conference Record of the Thirtieth Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-8186-7646-9

Type

conf

DOI

10.1109/ACSSC.1996.600939

Filename

600939