Optimal Energy Harvesting Protocols for Wireless Relay Networks
Saman Atapattu, Jamie Evans
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | Published : 2016
In this paper, we consider a relay network over a flat-fading channel, where the relay has no fixed power supply and thus needs to replenish energy via wireless energy harvesting (EH) from the signals transmitted by the source. We propose a novel hybrid protocol, which is a combination of existing EH protocols, such as power splitting (PS) and time switching (TS). We formulate the optimization problems and derive some explicit results. In particular, we derive the optimal PS and TS ratios at the relay for all three EH protocols to achieve the maximum throughput for information transfer from the source to the destination for both decode-and-forward and amplify-and-forward relaying schemes. We..View full abstract
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Awarded by Australian Research Council
This work was supported by the Australian Research Council through Discovery Project under Grant DP140101050 and the Discovery Early Career Researcher under Award DE160100020. The associate editor coordinating the review of this paper and approving it for publication was L. Musavian.