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.
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Acknowledgments
This work was supported by National Natural Science Foundation of China (61540046) and the “111” project of China (B08038).
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© 2018 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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Yang, M., Kuo, Y., Chen, J. (2018). Relay Selection Scheme for Energy Harvesting Cooperative Networks. In: Chen, Q., Meng, W., Zhao, L. (eds) Communications and Networking. ChinaCom 2016. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 210. Springer, Cham. https://doi.org/10.1007/978-3-319-66628-0_2
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DOI: https://doi.org/10.1007/978-3-319-66628-0_2
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