The performance of adaptive equalization for digital communication systems corrupted by interference

Author

North, Richard C. ; Axford, Roy A. ; Zeidler, James R.

Author_Institution

RDT & E Div., NCCOSC, San Diego, CA, USA

fYear

1993

fDate

1-3 Nov 1993

Firstpage

1548

Abstract

This paper analyzes the effects of interference on the steady-state performance of several popular adaptive equalization algorithms. It is shown that adaptive equalizers based on the linear equalizer structure have a built-in capability to reject narrowband interference, however the performance deteriorates as the bandwidth of the interference increases. The existence of a time-varying misadjustment component in the adaptive equalizer weight vector is shown to affect the interference cancellation properties. In addition, simultaneous multipath propagation and interference is investigated. These errors on the performance of the adaptive linear equalizer are especially important to applications where intentional or unintentional interferers may be encountered

Keywords

digital communication systems; electromagnetic wave propagation; equalisers; filtering and prediction theory; interference suppression; telecommunication channels; adaptive equalization algorithms; adaptive linear equalizer; bandwidth; digital communication systems; interference cancellation; linear equalizer structure; multipath propagation; narrowband interference rejection; time-varying misadjustment component; weight vector; Adaptive equalizers; Adaptive filters; Algorithm design and analysis; Bandwidth; Digital communication; Interference cancellation; Intersymbol interference; Modulation; Narrowband; Nonlinear filters; Performance analysis; Steady-state; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

0-8186-4120-7

Type

conf

DOI

10.1109/ACSSC.1993.342353

Filename

342353