Achieving Fairness without Loss of Performance in Selection Cooperation of Wireless Networks

Xingyang CHEN
Yuhan DONG
Xuedan ZHANG
Yong REN

IEICE TRANSACTIONS on Communications   Vol.E94-B    No.8    pp.2406-2410
Publication Date: 2011/08/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.2406
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
cooperative diversity,  selection cooperation,  decode-and-forward,  outage probability,  wireless networks,  

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This paper introduces a random selection cooperation scheme that takes the Decode-and-Forward (DF) approach to solve the unfairness problem in selection cooperation. Compared to previous work which obtained fairness but introduced performance loss, the proposed scheme guarantees fairness without performance loss. Its essence is to randomly select from the relays that can ensure the successful communication between the source and the destination, rather than to select the best relay. Both a theoretical analysis and simulation results confirm that the proposed scheme could achieve fairness and introduce no performance loss. We also discuss the conditions under which the proposed scheme is practical to implement.