Article (Scientific journals)
Resource Allocation for AF Relaying Wireless-Powered Networks with Nonlinear Energy Harvester
Nguyen, Tien-Tung; Nguyen, van Dinh; Pham, Quoc-Viet et al.
2021In IEEE Communications Letters, 25 (1), p. 1089-7798
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Keywords :
Amplify-and-forward relay; nonlinear energy; wireless-powered communications
Abstract :
[en] This letter considers a relay-based wireless-powered communication network to assist wireless communication between a source and multiple users. In particular, the relay adopts a nonlinear energy model to harvest energy from a power beacon and subsequently uses it for information transmission over timedivision multiple access. Aiming at the maximization of end-toend (e2e) sum throughput, we formulate a novel optimization problem that jointly optimizes the power and time fraction for energy and information transmission. For a simple yet efficient solution for the nonconvex problem, we first convert it to a more computationally tractable problem and then develop an iterative algorithm, in which closed-form solutions are obtained at each iteration. The effectiveness of our proposed approach is verified and demonstrated through simulation results. Moreover, the results reveal that the source should transmit with its maximum allowable power budget to obtain the optimal e2e sum throughput.
Research center :
Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM
Disciplines :
Electrical & electronics engineering
Author, co-author :
Nguyen, Tien-Tung
Nguyen, van Dinh ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Pham, Quoc-Viet
Lee, Jong-Ho
Kim, Yong-Hwa
External co-authors :
Language :
Title :
Resource Allocation for AF Relaying Wireless-Powered Networks with Nonlinear Energy Harvester
Publication date :
January 2021
Journal title :
IEEE Communications Letters
Publisher :
Institute of Electrical and Electronics Engineers, New York, United States - New York
Volume :
Issue :
Pages :
Peer reviewed :
Peer Reviewed verified by ORBi
FnR Project :
FNR11037543 - Integrated Wireless Information And Power Networks, 2015 (01/10/2016-30/09/2020) - Bjorn Ottersten
Funders :
FNR - Fonds National de la Recherche [LU]
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