Title :
Adaptive Beamformer-Rake Receiver for Space-Time Coded DS-CDMA Systems
Author :
Hefnawi, Mostafa ; Gai, Jing
Author_Institution :
RMC-Canada´´s Military Univ., Kingston
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;
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
DOI :
10.1109/ISCIII.2007.367374
