Adaptive Beamformer-Rake Receiver for Space-Time Coded DS-CDMA Systems

Author

Hefnawi, Mostafa ; Gai, Jing

Author_Institution

RMC-Canada´´s Military Univ., Kingston

fYear

2007

fDate

28-30 March 2007

Firstpage

121

Lastpage

124

Abstract

An adaptive beamformer-Rake receiver is proposed for code division multiple access (CDMA) space-time block coded (STBC) systems in frequency selective fading channels (FSFC). The system is based on a blind code filtering adaptive beamformer at the base station and the Alamouti´s transmit diversity at the mobile users. The system performance is evaluated by simulation in terms of bit error rates (BER) and beampatterns. It is shown that, in severe FSFC, the proposed hybrid system significantly outperforms MIMO systems without beamforming.

Keywords

adaptive signal processing; array signal processing; code division multiple access; error statistics; fading channels; radio receivers; space-time codes; DS-CDMA; Rake receiver; adaptive beamformer; beampattern; bit error rate; blind code filtering adaptive; code division multiple access; frequency selective fading channel; space-time block coded system; Adaptive filters; Adaptive systems; Base stations; Bit error rate; Fading; Filtering; Frequency conversion; MIMO; Multiaccess communication; System performance; MIMO system; adaptive-beamforming; code-filtering approach; component; space-time coding; transmit diversity;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Intelligence and Intelligent Informatics, 2007. ISCIII '07. International Symposium on

Conference_Location

Agadir

Print_ISBN

1-4244-1158-0

Electronic_ISBN

1-4244-1158-0

Type

conf

DOI

10.1109/ISCIII.2007.367374

Filename

4218407