Performance of a Multiple-Antenna Multiple-Equalizer System for a CDMA Indoor Wireless System

Authors:
S. Subramanian;D. J. Shpak;A. Antoniou
Affiliations:
Department of Electrical and Computer Engineering, University of Victoria, Victoria, B.C., Canada, V8W 3P6;Department of Electrical and Computer Engineering, University of Victoria, Victoria, B.C., Canada, V8W 3P6;Department of Electrical and Computer Engineering, University of Victoria, Victoria, B.C., Canada, V8W 3P6
Venue:
Wireless Personal Communications: An International Journal
Year:
2000

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Abstract

A multiple-antenna multiple-equalizer (MAME) system for interferencesuppression in some code-division multiple-access (CDMA) indoor wirelesssystems is investigated. The MAME system offers enhanced interferencesuppression capabilities over existing approaches under certain conditions andcan thus increase system capacity. The details of the MAME system arediscussed and the unique features of this work as compared with many otherstudies on space-time processing are explained using spectral correlation anddiversity domain concepts. The effects of the number of antennas, tap spacingof the equalizers, spectral correlation, and diversity domains are discussedusing simulation results. Adaptation performance results are also presentedand a recently proposed quasi-Newton algorithm is recommended for use in theMAME system. Decision-directed equalization results are also studied undervarious conditions and bit-error rate results are presented. Simulationresults illustrate that the MAME system can offer enhanced interferencesuppression capabilities in CDMA indoor wireless systems.