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Adaptive time-switching based energy harvesting relaying protocols
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Ding, Haiyang, Wang, Xiaodong, da Costa, Daniel Benevides, Chen, Yunfei and Gong, Fengkui (2017) Adaptive time-switching based energy harvesting relaying protocols. IEEE Transactions on Communications, 65 (7). 2821 -2837. doi:10.1109/TCOMM.2017.2693358 ISSN 0090-6778.
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Official URL: http://dx.doi.org/10.1109/TCOMM.2017.2693358
Abstract
Considering a dual-hop energy-harvesting (EH) relaying system, this paper advocates novel relaying protocols based on adaptive time-switching (TS) for amplify-and-forward and decode-and-forward modes, respectively. The optimal TS factor is first studied, which is adaptively adjusted based on the dual-hop channel state information (CSI), accumulated energy, and threshold signal-to-noise ratio (SNR), to achieve the maximum throughput efficiency per block. To reduce the CSI overhead at the EH relay, a low-complexity TS factor design is presented, which only needs single-hop CSI to determine the TS factor. Theoretical results show that, in comparison with the conventional solutions, the proposed optimal/low-complexity TS factor can achieve higher limiting throughput efficiency for sufficiently small threshold SNR. As the threshold SNR approaches infinity, the throughput efficiency of the proposed optimal/low-complexity TS factor tends to zero in a much slower pace than that of the conventional solutions. Simulation results are presented to corroborate the proposed methodology.
| Item Type: | Journal Article | ||||||||
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
| Journal or Publication Title: | IEEE Transactions on Communications | ||||||||
| Publisher: | IEEE | ||||||||
| ISSN: | 0090-6778 | ||||||||
| Official Date: | July 2017 | ||||||||
| Dates: |
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| Volume: | 65 | ||||||||
| Number: | 7 | ||||||||
| Page Range: | 2821 -2837 | ||||||||
| DOI: | 10.1109/TCOMM.2017.2693358 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Date of first compliant deposit: | 18 April 2017 | ||||||||
| Date of first compliant Open Access: | 18 April 2017 |
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