NDLI: Joint optimal power allocation and relay selection scheme in energy harvesting asymmetric two-way relaying system

Content Provider	IET Digital Library
Author	Men, Jinjin Ge, Jianhua Zhang, Chensi Li, Juan
Abstract	Energy harvesting, which is an emerging technology to prolong the lifetime of energy-constrained wireless networks, has received significant attention. In this study, the authors consider an amplify-and-forward-based asymmetric two-way relaying system, where two source nodes exchange information through an energy-constrained relay node. The relay node scavenges energy from the received signals and uses the harvested energy to forward the received signals to the two terminal nodes. The signal power splitting ratio, depicting the trade-off between the harvesting energy and the forward signals’ power, is a crucial factor for the system outage probability. Therefore, an optimal power allocation (OPA) scheme, which jointly takes into consideration the optimisation of signal power splitting ratio and the transmission power allocation, is proposed to minimise the outage probability. In addition, a close-form solution for the OPA scheme is obtained. Finally, a joint OPA and relay selection schemes are presented to further improve the system performance. Simulation results highlight the superiority of the author's proposed scheme.
Starting Page	1421
Ending Page	1426
Page Count	6
ISSN	17518628
Volume Number	9
e-ISSN	17518636
Issue Number	Issue 11, Jul (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/9/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.1129
Journal	IET Communications
Publisher Date	2015-05-20
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Amplify And Forward Communication Amplify And Forward-based Asymmetric Two-way Relaying System Channel Allocation Energy Constrained Relay Node Energy Constrained Wireless Network Lifetime Energy Harvesting Energy Harvesting Asymmetric Two-way Relaying System Information Exchange Joint Optimal Power Allocation Scheme Minimisation OPA Scheme Optimisation Technique Probability Radio Link And Equipment Relay Network Relay Selection Scheme Signal Power Splitting Ratio Optimisation Source Node Statistics System Outage Probability Minimisation Telecommunication Telecommunication Power Management Transmission Power Allocation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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