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An Energy-Efficient Relay Selection Strategy Based on Optimal Relay Location for AF Cooperative Transmission

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Abstract

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.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (No. 61303210) and the Zhejiang Provincial Natural Science Foundation of China (LQ12F02009).

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Correspondence to Zhenzhou Tang.

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Tang, Z., Wang, H. & Hu, Q. An Energy-Efficient Relay Selection Strategy Based on Optimal Relay Location for AF Cooperative Transmission. Int J Wireless Inf Networks 20, 355–364 (2013). https://doi.org/10.1007/s10776-013-0222-8

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  • DOI: https://doi.org/10.1007/s10776-013-0222-8

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