Title :
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
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;
Conference_Titel :
Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-4120-7
DOI :
10.1109/ACSSC.1993.342353
