Two-stage nonlinear detector in DS/SSMA communications with impulse noise

Author

Weng, J.F. ; Leung, S.H. ; Lau, W.H. ; Bi, G.G.

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, Hong Kong

Volume

144

Issue

6

fYear

1997

fDate

12/1/1997 12:00:00 AM

Firstpage

387

Lastpage

394

Abstract

A new two-stage nonlinear detector for synchronous DS/SSMA communications in impulsive channels is presented and analysed. In the detector, an interference cancellation scheme is used such that the effect of the multiple-access on the system performance can be alleviated. For a multiuser system with long spreading sequences an approximate error probability is derived and shows that the new detector is insensitive to the `near-far´ effect and gives a near-single-user performance. For cases with short spreading sequences Monte-Carlo simulations are carried out to estimate the error probability and the results show that the detector performs robustly in various mixtures of noise

Keywords

Monte Carlo methods; code division multiple access; error statistics; interference suppression; noise; radio receivers; radiofrequency interference; spread spectrum communication; synchronisation; Monte-Carlo simulations; approximate error probability; impulse noise; impulsive channels; interference cancellation scheme; multiple-access; multiuser system; near-far effect; near-single-user performance; spreading sequences; synchronous DS/SSMA communications; system performance; two-stage nonlinear detector;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:19971505

Filename

655613