National Taiwan Ocean University Institutional Repository:Item 987654321/32895
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题名: Multiuser detection assisted near-real-time symbol transmission for relay CDMA systems
作者: Hoang-Yang Lu;Ming-Ju Yang
贡献者: NTOU:Department of Electrical Engineering
日期: 2012-05
上传时间: 2012-06-18T07:47:57Z
出版者: International Conference on Systems and Informatics (ICSAI)
摘要: abstract:In this paper, we present a two-stage multiuser detection (MUD) scheme for near-real-time relay CDMA systems. Relay communications have received intensive research attention recently because of their benefit of spatial diversity. However, existing works generally have serious latency problems, which will reduce transmission rates. To solve the problems, we consider a near-real-time transmission strategy for relay CDMA systems. Also, a two-stage MUD scheme is proposed for the detectors at the relays and the destination node to ensure the feasibility of the transmission strategy. The proposed MUD scheme first conducts the zero forcing (ZF) method to suppress the multiple access interfere and then uses the maximum likelihood (ML) mechanism to estimate the transmitted symbols. Specially, the two-stage MUD scheme only requires few computations to conduct the ML mechanism. Simulation results and complexity analysis show that the proposed scheme can not only provide significant diversity gain with a modest computational complexity but also assist relay CDMAs to facilitate the near-real-time transmission.
關聯: pp.1436-1440
URI: http://ntour.ntou.edu.tw/handle/987654321/32895
显示于类别:[電機工程學系] 演講及研討會

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