UAV-aided two-way multi-user relaying
UAV-aided two-way multi-user relaying
Unmanned aerial vehicle (UAV)-aided two-way relaying networks are designed, where a UAV is deployed to assist multiple pairs of users in their information exchange. There are two basic approaches for the user pairs' information exchange within a single time slot via the UAV relay. The first approach is based on full-duplex, where all participants operate in the full-duplex mode to transmit and receive signals simultaneously. However, all transceivers have to operate in the face of severe self-interference, which cannot be completely suppressed. The second approach is based on conventional half-duplex, where the users send their information to the UAV within a certain fraction of the time slot, and the UAV relays them within the remaining fraction to avoid the self-interference. In either approach, the joint bandwidth and power allocation maximizing the sum information exchange throughput under realistic resource and user throughput constraints poses a complex nonconvex problem. New inner approximations are proposed for developing path-following algorithms for their computation. Our numerical results show that the time-fraction-based half-duplex approach clearly outperforms the high-complexity full-duplex approach.
non-convex optimization, throughput optimization, two-way relaying, Unmanned aerial vehicle (UAV)-enabled communication
246-260
Sheng, Zhichao
e8b377db-3521-478c-b752-2c9a3eaf2b01
Tuan, Hoang Duong
423ee18d-ebc7-44d9-9264-3819b63779eb
Duong, Trung Q.
9013dc6d-f5bb-4bd9-9b64-8eea94b09eda
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
January 2021
Sheng, Zhichao
e8b377db-3521-478c-b752-2c9a3eaf2b01
Tuan, Hoang Duong
423ee18d-ebc7-44d9-9264-3819b63779eb
Duong, Trung Q.
9013dc6d-f5bb-4bd9-9b64-8eea94b09eda
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Sheng, Zhichao, Tuan, Hoang Duong, Duong, Trung Q. and Hanzo, Lajos
(2021)
UAV-aided two-way multi-user relaying.
IEEE Transactions on Communications, 69 (1), , [9222118].
(doi:10.1109/TCOMM.2020.3030679).
Abstract
Unmanned aerial vehicle (UAV)-aided two-way relaying networks are designed, where a UAV is deployed to assist multiple pairs of users in their information exchange. There are two basic approaches for the user pairs' information exchange within a single time slot via the UAV relay. The first approach is based on full-duplex, where all participants operate in the full-duplex mode to transmit and receive signals simultaneously. However, all transceivers have to operate in the face of severe self-interference, which cannot be completely suppressed. The second approach is based on conventional half-duplex, where the users send their information to the UAV within a certain fraction of the time slot, and the UAV relays them within the remaining fraction to avoid the self-interference. In either approach, the joint bandwidth and power allocation maximizing the sum information exchange throughput under realistic resource and user throughput constraints poses a complex nonconvex problem. New inner approximations are proposed for developing path-following algorithms for their computation. Our numerical results show that the time-fraction-based half-duplex approach clearly outperforms the high-complexity full-duplex approach.
Text
UAV_TWR_final_two_column
- Accepted Manuscript
More information
Accepted/In Press date: 4 October 2020
Published date: January 2021
Additional Information:
Funding Information:
Manuscript received January 28, 2020; revised August 3, 2020; accepted October 4, 2020. Date of publication October 13, 2020; date of current version January 15, 2021. Z. Sheng would like to acknowledge the support of National Natural Science Foundation of China (NSFC) under Grant 61901254. H. D. Tuan would like to acknowledge the support of the Australian Research Council’s Discovery Projects under Project DP190102501. T. Q. Duong would like to acknowledge the support of the U.K. the Royal Academy of Engineering (RAEng) under the RAEng Research Chair and Senior Research Fellowship scheme Grant RCSRF2021\11\41 and RAEng Research Fellowship scheme Grant RF1415\14\22. L. Hanzo would like to acknowledge the support of the Engineering and Physical Sciences Research Council projects EP/N004558/1, EP/P034284/1, EP/P034284/1, EP/P003990/1 (COALESCE), of the Royal Society’s Global Challenges Research Fund Grant as well as of the European Research Council’s Advanced Fellow Grant QuantCom. The associate editor coordinating the review of this article and approving it for publication was X. Yuan. (Corresponding author: Lajos Hanzo.) Zhichao Sheng was with the School of Electronics, Electrical Engineering, and Computer Science, Queen’s University Belfast, Belfast BT7 1NN, U.K. He is now with the Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200444, China, and also with the Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai University, Shanghai 200444, China (e-mail: zcsheng@shu.edu.cn).
Publisher Copyright:
© 1972-2012 IEEE.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
Keywords:
non-convex optimization, throughput optimization, two-way relaying, Unmanned aerial vehicle (UAV)-enabled communication
Identifiers
Local EPrints ID: 444369
URI: http://eprints.soton.ac.uk/id/eprint/444369
ISSN: 0090-6778
PURE UUID: 4193b396-707f-4669-807b-3bf4519dfc32
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Date deposited: 14 Oct 2020 16:31
Last modified: 18 Mar 2024 02:36
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Contributors
Author:
Zhichao Sheng
Author:
Hoang Duong Tuan
Author:
Trung Q. Duong
Author:
Lajos Hanzo
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