NDLI: Transmit power allocation of energy transmitters for throughput maximisation in wireless powered communication networks

Content Provider	IET Digital Library
Author	Yu, Zhanwei Chi, Kaikai Zheng, Kechen Li, Yanjun Cheng, Zhen
Abstract	Radio-frequency (RF) energy harvesting is one promising technology to power the nodes in wireless networks. This study focuses on large-scale wireless powered communication networks having multiple RF energy transmitters (ETs) and sinks, which almost have not been investigated previously. The authors aim to optimise the throughput via optimizing the transmit power allocation of ETs subject to a total power budget. Specifically, for the sum-throughput maximisation (STM) problem, they firstly formulate it to be a non-linear optimisation problem, then prove its convexity and finally propose an efficient dual sub-gradient algorithm to solve it. Owing to the throughput unfairness among nodes of the STM approach, they further consider the common-throughput maximisation (CTM; i.e. the worst node's throughput) and propose a very efficient algorithm for it. This algorithm divides the CTM problem into a master problem and a subproblem. The subproblem of determining the feasibility of a given common-throughput is solved by transforming it to a linear problem whose optimal solution indicates the feasibility. The master problem of determining the maximal common-throughput is solved by using the bisection search method. Simulation results demonstrate the effectiveness of the CTM approach to mitigate the throughput unfairness problem at the cost of decreased sum-throughput.
Starting Page	1200
Ending Page	1206
Page Count	7
ISSN	17518628
Volume Number	13
e-ISSN	17518636
Issue Number	Issue 9, Jun (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/13/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2018.6045
Journal	IET Communications
Publisher Date	2019-02-22
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Common-throughput Maximisation CTM Problem Decreased Sum-throughput Energy Harvesting Energy Transmitters ETs Subject Linear Problem Whose Optimal Solution Master Problem Maximal Common-throughput Nonlinear Optimisation Problem Optimisation Optimisation Technique Promising Technology Radio Frequency Power Transmission Radio Link And Equipment Radio Network Radio-frequency Energy Harvesting RF Sinks Sub-gradient Algorithm Sum-throughput Maximisation Problem Telecommunication Power Management Throughput Unfairness Problem Total Power Budget Transmit Power Allocation Wireless Network Wireless Powered Communication Network Wireless Sensor Network Worst Node
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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