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Optimal Energy Efficiency Fairness of Nodes in Wireless Powered Communication Networks

Authors: Zhang, J; Zhou, Q; Ng, DWK; Jo, M;

Optimal Energy Efficiency Fairness of Nodes in Wireless Powered Communication Networks

Abstract

In wireless powered communication networks (WPCNs), it is essential to research energy efficiency fairness in order to evaluate the balance of nodes for receiving information and harvesting energy. In this paper, we propose an efficient iterative algorithm for optimal energy efficiency proportional fairness in WPCN. The main idea is to use stochastic geometry to derive the mean proportionally fairness utility function with respect to user association probability and receive threshold. Subsequently, we prove that the relaxed proportionally fairness utility function is a concave function for user association probability and receive threshold, respectively. At the same time, a sub-optimal algorithm by exploiting alternating optimization approach is proposed. Through numerical simulations, we demonstrate that our sub-optimal algorithm can obtain a result close to optimal energy efficiency proportional fairness with significant reduction of computational complexity.

Country
Australia
Keywords

anzsrc-for: 0502 Environmental Science and Management, anzsrc-for: 4009 Electronics, anzsrc-for: 46 Information and Computing Sciences, fairness, wireless power transfer, TP1-1185, anzsrc-for: 0602 Ecology, anzsrc-for: 4613 Theory Of Computation, Article, anzsrc-for: 40 Engineering, 4613 Theory Of Computation, 46 Information and Computing Sciences, anzsrc-for: 3103 Ecology, anzsrc-for: 0301 Analytical Chemistry, sensors and digital hardware, anzsrc-for: 0906 Electrical and Electronic Engineering, energy efficiency, 40 Engineering, energy efficiency; fairness; WPCN; energy harvest; wireless power transfer, anzsrc-for: 0805 Distributed Computing, Chemical technology, anzsrc-for: 4008 Electrical engineering, 004, 620, 4606 Distributed Computing and Systems Software, anzsrc-for: 4006 Communications Engineering, WPCN, 7 Affordable and Clean Energy, energy harvest, anzsrc-for: 4104 Environmental management, 4006 Communications Engineering, anzsrc-for: 4606 Distributed Computing and Systems Software

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    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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    influence
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Average
Average
Average
Green
gold