On the Combination of Cooperative Diversity and Multiuser Diversity in Multi-Source Multi-Relay Wireless Networks

被引：53
|
作者：
Sun, Li [1 ]
Zhang, Taiyi [1 ]
Lu, Long [2 ]
Niu, Hao [1 ]
机构：
[1] Xi An Jiao Tong Univ, Dept Informat & Commun Engn, Xian 710049, Peoples R China
[2] Tokyo Inst Technol, Dept Commun & Integrated Syst, Tokyo 1528550, Japan
来源：
IEEE SIGNAL PROCESSING LETTERS | 2010年 / 17卷 / 06期
关键词：
Cooperative diversity; diversity order; multiuser diversity; power allocation; OPTIMAL POWER ALLOCATION; PERFORMANCE ANALYSIS; SPATIAL DIVERSITY; SELECTION; PROTOCOLS;
D O I：
10.1109/LSP.2010.2046350
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter presents an analysis of the combined use of cooperative diversity and multiuser diversity (MUD) in multi-source multi-relay networks. A joint selection scheme, which selects the best source-relay pair to access the channel, is proposed. The main contribution of our work is the derivation of the exact and asymptotic expressions for the outage probability of the system with amplify-and-forward (AF) protocol. From these expressions it is indicated that the total diversity order M + N of can be achieved, where M and N are the number of source nodes and relay nodes, respectively. Based on the outage probability in high signal-to-noise-ratio (SNR) region, the optimum power allocation scheme is also given to improve the system performance.
引用
收藏
页码：535 / 538
页数：4
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