Performance evaluation of the decorrelating detector for DS-CDMA systems over multipath Rayleigh fading channels with AWGN

Author

Voorman, Alwyn J. ; Koulakiotis, Dimitris ; Aghvami, A. Hamid ; Prasad, Ramjee

Author_Institution

IRCTR, Delft Univ. of Technol., Netherlands

Volume

1

fYear

1998

fDate

8-11 Sep 1998

Firstpage

228

Abstract

This study assesses the performance of the decorrelating detector for DS-CDMA systems over multipath Rayleigh fading channels with AWGN. The decorrelating detector applies the inverse of the correlation matrix to decorrelate the matched filter outputs. The drawback of the decorrelating detector is that it enhances noise and that the inverse of the correlation matrix not always exists. The theoretical performance of the decorrelating detector is presented and the problem of inversion of the correlation matrix is discussed. This article also considers the case when the inverse of a smaller correlation matrix can be used for decorrelating the received data. The performance of the decorrelating detector is compared with other multi-user detectors proposed for DS-CDMA

Keywords

AWGN; Rayleigh channels; code division multiple access; correlation methods; decorrelation; filtering theory; land mobile radio; matched filters; matrix inversion; multipath channels; multiuser channels; radio links; signal detection; spread spectrum communication; AWGN; DS-CDMA systems; correlation matrix inversion; decorrelating detector; inverse correlation matrix; matched filter outputs; mobile radio system; multi-user detectors; multipath Rayleigh fading channels; performance evaluation; received data decorrelation; uplink; AWGN; Additive white noise; Decorrelation; Detectors; Fading; Hybrid integrated circuits; Matched filters; Multiaccess communication; Multiple access interference; Silicon carbide;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 1998. The Ninth IEEE International Symposium on

Conference_Location

Boston, MA

Print_ISBN

0-7803-4872-9

Type

conf

DOI

10.1109/PIMRC.1998.733549

Filename

733549