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论文类型：期刊论文

发表时间：2013-12-01

发表刊物：International Journal of Wireless Information Networks

收录刊物：EI、Scopus

卷号：20

期号：4

页面范围：355-364

ISSN号：10689605

摘要：In this paper, an energy-efficient optimal relay selection strategy which is jointly optimized with the energy-efficient optimal power allocation scheme for AF cooperative transmission is proposed. The relay selection criterion is the distance from the potential relay to the corresponding optimal relay locations where the minimum transmission power of the source, the relay or their total can be achieved. In order to determine the optimal relay locations, a universal algorithm with low computational complexity and easy implementation is also presented. Simulations are conducted to validate our theoretical analysis. The results show that with the relay selected by the proposed strategy, the cooperative transmission can achieve considerably high energy-efficiency. © 2013 Springer Science+Business Media New York.