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Joint trajectory and precoding optimization for UAV-assisted NOMA networks
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Zhao, Nan, Pang, Xiaowei, Li, Zan, Chen, Yunfei, Li, Feng, Ding, Zhiguo and Alouini, Mohamed-Slim (2019) Joint trajectory and precoding optimization for UAV-assisted NOMA networks. IEEE Transactions on Communications, 67 (5). pp. 3723-3735. doi:10.1109/TCOMM.2019.2895831 ISSN 0090-6778.
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WRAP-joint-trajectory-precoding-optimization-UAV-assisted-NOMA-networks-Chen-2019.pdf - Accepted Version - Requires a PDF viewer. Download (3269Kb) | Preview |
Official URL: https://doi.org/10.1109/TCOMM.2019.2895831
Abstract
The explosive data traffic and connections in 5G networks require the use of non-orthogonal multiple access (NOMA) to accommodate more users. Unmanned aerial vehicle (UAV) can be exploited with NOMA to improve the situation further. In this paper, we propose a UAV-assisted NOMA network, in which the UAV and base station (BS) cooperate with each other to serve ground users simultaneously. The sum rate is maximized by jointly optimizing the UAV trajectory and the NOMA precoding. To solve the optimization, we decompose it into two steps. First, the sum rate of the UAV-served users is maximized via alternate user scheduling and UAV trajectory, with its interference to the BS-served users below a threshold. Then, the optimal NOMA precoding vectors are obtained using two schemes with different constraints. The first scheme intends to cancel the interference from the BS to the UAV-served user, while the second one restricts the interference to a given threshold. In both schemes, non-convex optimization problems are converted into tractable ones. An iterative algorithm is designed. Numerical results are provided to evaluate the effectiveness of the proposed algorithms for the hybrid NOMA and UAV network.
Item Type: | Journal Article | |||||||||||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TL Motor vehicles. Aeronautics. Astronautics |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | |||||||||||||||
Library of Congress Subject Headings (LCSH): | Wireless communication systems, Drone aircraft | |||||||||||||||
Journal or Publication Title: | IEEE Transactions on Communications | |||||||||||||||
Publisher: | IEEE | |||||||||||||||
ISSN: | 0090-6778 | |||||||||||||||
Official Date: | May 2019 | |||||||||||||||
Dates: |
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Volume: | 67 | |||||||||||||||
Number: | 5 | |||||||||||||||
Page Range: | pp. 3723-3735 | |||||||||||||||
DOI: | 10.1109/TCOMM.2019.2895831 | |||||||||||||||
Status: | Peer Reviewed | |||||||||||||||
Publication Status: | Published | |||||||||||||||
Reuse Statement (publisher, data, author rights): | © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | |||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||
Date of first compliant deposit: | 23 January 2019 | |||||||||||||||
Date of first compliant Open Access: | 23 January 2019 | |||||||||||||||
RIOXX Funder/Project Grant: |
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