DocumentCode :
394812
Title :
Performance of space-time block coded system over frequency selective fading channel using semi-blind channel estimation technique
Author :
Xiaoyu, Hu ; Huat, Chew Yong
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Volume :
1
fYear :
2003
fDate :
20-20 March 2003
Firstpage :
414
Abstract :
To achieve high system capacity over frequency-selective fading channel, multi-carrier code-division-multiple-access (MC-CDMA) system with spatial diversity using space-time block coding (STBC) is considered. We present a subspace-based semi-blind channel estimation method under multiuser environment to resolve the inherent scalar ambiguity when blind estimation technique is used. Mean-square-error (MSE) expression for the proposed channel estimation technique is derived. Bit-error-rate (BER) when using linear zero-forcing (ZF) and minimum-mean-square-error (MMSE) multiuser detection techniques taking the channel estimation error into consideration are obtained through simulation. The correctness of the BERs is further verified through estimating the signal-to-interference and noise-ratio (SINR) at the multiuser detectors.
Keywords :
block codes; channel estimation; code division multiple access; error statistics; fading channels; least mean squares methods; mobile radio; multiuser detection; space-time codes; BER; MC-CDMA; MSE; bit error rate; channel estimation error; frequency selective fading channel; linear zero forcing; mean square error; minimum mean square error; multicarrier code division multiple access system; multiuser detection technique; multiuser environment; scalar ambiguity; semiblind channel estimation method; space-time block coding; spatial diversity; Bit error rate; Block codes; Channel estimation; Detectors; Diversity reception; Fading; Frequency estimation; Multicarrier code division multiple access; Multiuser detection; Signal to noise ratio;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Conference_Location :
New Orleans, LA, USA
ISSN :
1525-3511
Print_ISBN :
0-7803-7700-1
Type :
conf
DOI :
10.1109/WCNC.2003.1200385
Filename :
1200385
Link To Document :
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