Communications and Networking. 11th EAI international Conference, ChinaCom 2016 Chongqing, China, September 24-26, 2016, Proceedings, Part II

Research Article

Relay Selection Scheme for Energy Harvesting Cooperative Networks

  • @INPROCEEDINGS{10.1007/978-3-319-66628-0_2,
        author={Mengqi Yang and Yonghong Kuo and Jian Chen},
        title={Relay Selection Scheme for Energy Harvesting Cooperative Networks},
        proceedings={Communications and Networking. 11th EAI international Conference, ChinaCom 2016 Chongqing, China, September 24-26, 2016, Proceedings, Part II},
        proceedings_a={CHINACOM},
        year={2017},
        month={10},
        keywords={Cooperative communications Energy harvesting Relay selection DF-relay Distributed},
        doi={10.1007/978-3-319-66628-0_2}
    }
    
  • Mengqi Yang
    Yonghong Kuo
    Jian Chen
    Year: 2017
    Relay Selection Scheme for Energy Harvesting Cooperative Networks
    CHINACOM
    Springer
    DOI: 10.1007/978-3-319-66628-0_2
Mengqi Yang1, Yonghong Kuo1, Jian Chen1,*
  • 1: Xidian University
*Contact email: jianchen@mail.xidian.edu.cn

Abstract

Harvesting energy from the radio-frequency signal is an appealing approach to replenish energy in energy-constrained networks. In this paper, relay selection (RS) in a half-duplex decode-and-forwarding multi-relay network with an energy harvesting source is investigated. Without relying on dedicated wireless power transfer, in our system the source is powered by salvaging energy from the relaying signals. In this network, RS will affect both the current transmission quality and the source energy state in the following transmission block, which is not considered in the traditional RS schemes. Thus, a two-step distributed RS scheme is proposed to improve the system performance and is compared with the max-min signal-to-noise ratio strategy. In our proposed RS scheme, the system outage probability is derived in a closed form, and the diversity gain is shown to achieve the full diversity order. Finally, numerical results are given to evaluate the performance and verify the analysis.