Effect of other-cell MAI on linear and nonlinear multiuser detectors

Author

Wang, Zhaocheng ; Li, Kwok H. ; Kot, Alex C.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore

fYear

1997

fDate

9-12 Sep 1997

Firstpage

659

Abstract

This paper investigates the effect of other-cell multiple-access interference (MAI) on some suboptimal multiuser detectors such as decorrelating multiuser detector, parallel interference canceller and adaptive minimum mean-squared error (MMSE) multiuser detector. Based on the Gaussian approximation for other-cell MAI, the bit-error rate (BER) of each detector is derived. Both analytical results and simulations indicate that the performance degradation due to other-cell MAI is significant. It is also observed that the other-cell MAI introduces more errors to multiuser detectors that require prior information on users´ signature waveforms

Keywords

Gaussian channels; adaptive signal detection; approximation theory; cellular radio; code division multiple access; coding errors; correlation methods; error statistics; interference suppression; land mobile radio; pseudonoise codes; radiofrequency interference; spread spectrum communication; AWGN channel; BER; DS-CDMA cellular system; Gaussian approximation; MMSE multiuser detector; adaptive minimum mean-squared error; bit-error rate; decorrelating multiuser detector; linear multiuser detector; multiple-access interference; nonlinear multiuser detector; other-cell MAI; parallel interference canceller; performance degradation; signature waveforms; simulations; suboptimal multiuser detectors; Bit error rate; Decorrelation; Degradation; Detectors; Forward error correction; Interference cancellation; Multiaccess communication; Multiple access interference; Multiuser detection; Performance analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on

Print_ISBN

0-7803-3676-3

Type

conf

DOI

10.1109/ICICS.1997.652059

Filename

652059