Title :
Trading system performance for energy use in a VLSI implementation of an adaptive equalizer
Author :
Abbasi, Naeem A. ; Zukowski, Charles A.
Author_Institution :
Columbia Univ., New York, NY, USA
Abstract :
We simulate a 64Mbps (16Mbaud, 16-PSK) digital communication link operating in a multipath channel. An adaptive equalizer using Least Mean Square algorithm for coefficient update is used to cancel Intersymbol Interference in the receiver. It is shown through computer simulations that system performance can be traded for energy use more intelligently if information about data temporal characteristics is available to the receiver. A simple transversal filter architecture is also presented in which the number of filter taps, and various word sizes can be dynamically adjusted based on temporal characteristics of data
Keywords :
VLSI; adaptive equalisers; adaptive filters; digital communication; interference suppression; intersymbol interference; least mean squares methods; multipath channels; phase shift keying; receivers; 64 Mbit/s; PSK; VLSI; adaptive equalizer; coefficient update; computer simulation; data temporal characteristics; digital communication link; energy use; intersymbol interference cancellation; least mean square algorithm; multipath channel; receiver; system performance; transversal filter architecture; Adaptive equalizers; Computational modeling; Digital communication; Interference cancellation; Intersymbol interference; Least mean square algorithms; Multipath channels; System performance; Transversal filters; Very large scale integration;
Conference_Titel :
Circuits and Systems, 2000. Proceedings of the 43rd IEEE Midwest Symposium on
Conference_Location :
Lansing, MI
Print_ISBN :
0-7803-6475-9
DOI :
10.1109/MWSCAS.2000.952814
