Title :
A new performance analysis of STBC under CDMA multiuser environment
Author :
Zhang, Zhi ; Cao, Xiaobin ; Li, Guoqing ; Qiu, Ling ; Zhu, Jinang
Author_Institution :
Personal Commun. Network & Spread Spectrum Lab., Univ. of Sci. & Technol. of China, Hefei, China
Abstract :
In this paper, we introduce a new solution to analyze performance of Space-Time Block Coding (STBC) under Rayleigh fading channels for CDMA multiuser environment. We consider a typical downlink CDMA system with N transmit antennas and M receive antennas. We derive a new expression of BER for STBC and compare it with conventional maximum ratio combination (MRC) technique having M*N diversity order. We find that STBC provides not only the same diversity gain as MRC, but additional coding gain. So STBC has better performance than MRC when taking the near-far situation into account
Keywords :
Rayleigh channels; block codes; channel coding; code division multiple access; diversity reception; error statistics; mobile radio; multiuser channels; receiving antennas; transmitting antennas; BER; Rayleigh fading channels; STBC; coding gain; diversity gain; downlink CDMA; multiuser environment; near-far situation; receive antennas; space-time block coding; transmit antennas; Decoding; Encoding; Multiaccess communication; Performance analysis;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.966014
