Pre-decorrelating single user detection for CDMA systems

Author

Tang, Zhenyu ; Cheng, Shixin

Author_Institution

Dept. of Radio Eng., Southeast Univ., Nanjing, China

fYear

1994

fDate

8-10 Jun 1994

Firstpage

767

Abstract

This paper introduces a new scheme for single user detection in the forward direction of centralized DS/CDMA systems. The basic idea is that, instead of the data themselves, the linear combinations of active users´ data according to the inverse crosscorrelation matrix of their signature waveforms are transmitted. With the proposed scheme, the simple correlator can well cancel the multiple access interference like the decorrelating multiuser detector while the signature waveforms of other users do not need to be known at the receiver. Analysis and simulation results of the performance are presented

Keywords

code division multiple access; correlation methods; interference suppression; land mobile radio; pseudonoise codes; radiofrequency interference; signal detection; spread spectrum communication; CDMA systems; centralized DS/CDMA systems; decorrelating multiuser detector; forward direction; inverse crosscorrelation matrix; multiple access interference cancellation; performance analysis; pre-decorrelating single user detection; signature waveforms; simulation results; AWGN; Base stations; Correlators; Covariance matrix; Decorrelation; Detectors; Interference cancellation; Multiaccess communication; Multiple access interference; Performance analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1994 IEEE 44th

Conference_Location

Stockholm

ISSN

1090-3038

Print_ISBN

0-7803-1927-3

Type

conf

DOI

10.1109/VETEC.1994.345193

Filename

345193