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Performance Analysis of Multiuser Diversity in Multiuser Two-Hop Cooperative Relay Wireless Networks

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5 Author(s)
Xing Zhang ; Wireless Signal Process. & Networks Lab. (WSPN), Beijing Univ. of Posts & Telecommun., Beijing ; Chao Yang ; Shuping Chen ; Yong Li
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Cooperative communications significantly improve the performance of wireless network through the help of relay nodes, while multiuser diversity is an inherent diversity in multiuser systems. In this paper, we present a framework to analyze the performance of multiuser diversity in the multiuser two-hop cooperative relay networks (TCRN). Based on this framework, we derive tight closed-form expressions of outage probability and symbol error probability (SEP) for amply-and-forward (AF) protocol with multiuser diversity. Both the theoretical analysis and simulations show that in multiuser TCRN, a multiuser diversity order equals to 2K can be achieved (where K is the number of users). This conclusions help to design the scheduling methods in cooperative relay networks.

Published in:

Communications Workshops, 2008. ICC Workshops '08. IEEE International Conference on

Date of Conference:

19-23 May 2008

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