NDLI: Energy provision minimisation in large-scale wireless powered communication networks with throughput demand

Content Provider	IET Digital Library
Author	Ge, Haijiang Yu, Zhanwei Chi, Kaikai Mao, Keji Shao, Qike Chen, Lijian
Abstract	So far, the research of wireless powered communication networks (WPCNs) mainly considers the scenarios with a single radio-frequency (RF) energy transmitter (ET) and a single sink. However, in practice, there are many applications where multiple ETs and sinks need to be deployed. This study focuses on large-scale WPCNs having multiple RF ETs and sinks. Specifically, the authors aim to minimise the total energy provision by optimising ETs' transmit powers with the node-throughput demand and sum-throughput demand, respectively. For the node-throughput demand case, they firstly formulate it to be a convex optimisation problem, then transform it to be a linear programming (LP) problem, and finally present a distributed algorithm to obtain the optimal solution. For the sum-throughput demand case, they firstly formulate it to be a non-linear optimisation problem, then prove its convexity and finally propose an efficient dual subgradient algorithm to obtain the optimal solution. Simulation results demonstrate that compared to the sum-throughput demand, imposing the node-throughput demand can effectively alleviate the throughput unfairness at the cost of increased energy provision; the proposed optimal algorithms can substantially decrease the total energy provision of ETs; the energy provision reduction percentage achieved by their schemes increases as the number of ETs increases.
Starting Page	458
Ending Page	465
Page Count	8
ISSN	17518628
Volume Number	14
e-ISSN	17518636
Issue Number	Issue 3, Feb (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/14/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2019.0022
Journal	IET Communications
Publisher Date	2019-11-08
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Available Power Provision Convex Optimisation Problem Convex Programming Cooperative Communication Data Collection Scheme Distributed Algorithm Efficient Dual Subgradient Algorithm Energy Provision Minimisation Energy Provision Reduction Percentage ETs Increases Increased Energy Provision Inductive Power Transmission Large-scale WPCNs Linear Programming Linear Programming Problem Multiple ETs Multiple RF ETs Node-throughput Demand Case Nonlinear Optimisation Problem Optimal Transmit Power Optimisation Optimisation Technique Radio Link And Equipment Resource Allocation Single Radio-frequency Energy Transmitter Single Sink Statistics Sum-throughput Demand Case Throughput Unfairness Problem Total Energy Provision Transmit Power Allocation Wireless Powered Communication Network
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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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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