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Time-Division Energy Beamforming for Multiuser Wireless Power Transfer With Non-Linear Energy Harvesting
Ma, Ganggang1,2; Xu, Jie2,3; Liu, Ya-Feng4; Moghadam, Mohammad R. Vedady5
2021
Source PublicationIEEE WIRELESS COMMUNICATIONS LETTERS
ISSN2162-2337
Volume10Issue:1Pages:53-57
AbstractEnergy beamforming has emerged as a promising technique for enhancing the energy transfer efficiency of radio-frequency (RF) enabled wireless power transfer (WPT). However, the performance of conventional energy beamforming may seriously degrade due to the non-linear RF to direct current (DC) conversion at energy receivers (ERs). To tackle this issue, this letter proposes a new time-division energy beamforming scheme, in which different energy beamforming matrices (of high ranks in general) are time shared to exploit the "convex-concave" shape of the RF-DC power relation at ERs. In particular, we maximize the minimum harvested DC energy among all ERs, by jointly optimizing the energy beamforming matrices and the corresponding time allocation subject to a given charging time duration (e.g., a second). To solve the formulated non-convex min-DC-energy maximization problem, we propose an efficient solution by using the techniques of alternating optimization and successive convex approximation (SCA). Numerical results show that the proposed time-division energy beamforming design indeed outperforms the conventional multi-beam and time-division-multiple-access (TDMA)-based energy transmissions.
KeywordEnergy beamforming wireless power transfer (WPT) non-linear energy harvesting time division
DOI10.1109/LWC.2020.3020324
Indexed BySCI
Language英语
Funding ProjectKey Area Research and Development Program of Guangdong Province[2018B030338001] ; National Key Research and Development Program of China[2018YFB1800800] ; Natural Science Foundation of China[61871137] ; Guangdong Province Basic Research Program (Natural Science)[2018KZDXM028] ; National Natural Science Foundation of China[11671419] ; National Natural Science Foundation of China[11991021]
WOS Research AreaComputer Science ; Engineering ; Telecommunications
WOS SubjectComputer Science, Information Systems ; Engineering, Electrical & Electronic ; Telecommunications
WOS IDWOS:000608008200012
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.amss.ac.cn/handle/2S8OKBNM/57989
Collection中国科学院数学与系统科学研究院
Corresponding AuthorXu, Jie
Affiliation1.Guangdong Univ Technol, Sch Informat Engn, Guangzhou 510006, Peoples R China
2.Chinese Univ Hong Kong Shenzhen, Future Network Intelligence Inst, Shenzhen 518172, Peoples R China
3.Chinese Univ Hong Kong Shenzhen, Sch Sci & Engn, Shenzhen 518172, Peoples R China
4.Chinese Acad Sci, State Key Lab Sci & Engn Comp, Inst Computat Math & Sci Engn Comp, Acad Math & Syst Sci, Beijing 100190, Peoples R China
5.TransferFi Pte Ltd, Singapore, Singapore
Recommended Citation
GB/T 7714
Ma, Ganggang,Xu, Jie,Liu, Ya-Feng,et al. Time-Division Energy Beamforming for Multiuser Wireless Power Transfer With Non-Linear Energy Harvesting[J]. IEEE WIRELESS COMMUNICATIONS LETTERS,2021,10(1):53-57.
APA Ma, Ganggang,Xu, Jie,Liu, Ya-Feng,&Moghadam, Mohammad R. Vedady.(2021).Time-Division Energy Beamforming for Multiuser Wireless Power Transfer With Non-Linear Energy Harvesting.IEEE WIRELESS COMMUNICATIONS LETTERS,10(1),53-57.
MLA Ma, Ganggang,et al."Time-Division Energy Beamforming for Multiuser Wireless Power Transfer With Non-Linear Energy Harvesting".IEEE WIRELESS COMMUNICATIONS LETTERS 10.1(2021):53-57.
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