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Uplink precoding optimization for NOMA cellular-connected UAV networks
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Pang, Xiaowei, Gui, Guan, Zhao, Nan, Zhang, Weile, Chen, Yunfei, Ding, Zhiguo and Adachi, Fumiyuki (2020) Uplink precoding optimization for NOMA cellular-connected UAV networks. IEEE Transactions on Communications, 68 (2). pp. 1271-1283. doi:10.1109/TCOMM.2019.2954136 ISSN 0090-6778.
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WRAP-uplink-precoding-optimization-NOMA-cellular-connected-UAV-networks-Chen-2019.pdf - Accepted Version - Requires a PDF viewer. Download (5Mb) | Preview |
Official URL: https://doi.org/10.1109/TCOMM.2019.2954136
Abstract
Unmanned aerial vehicles (UAVs) are playing an important role in wireless networks, due to their cost effectiveness and flexible deployment. Particularly, integrating UAVs into existing cellular networks has great potential to provide high-rate and ultra-reliable communications. In this paper, we investigate the uplink transmission in a cellular network from a UAV using non-orthogonal multiple access (NOMA) and from ground users to base stations (BSs). Specifically, we aim to maximize the sum rate of uplink from UAV to BSs in a specific band as well as from the UAV’s co-channel users to their associated BSs via optimizing the precoding vectors at the multi-antenna UAV. To mitigate the interference, we apply successive interference cancellation (SIC) not only to the UAV-connected BSs, but also to the BSs associated with ground users in the same band. The precoding optimization problem with constraints on the SIC decoding and the transmission rate requirements is formulated, which is non-convex. Thus, we introduce auxiliary variables and apply approximations based on the first-order Taylor expansion to convert it into a second-order cone programming. Accordingly, an iterative algorithm is designed to obtain the solution to the problem with low complexity. Numerical results are presented to demonstrate the effectiveness of our proposed scheme.
Item Type: | Journal Article | |||||||||||||||
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Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software 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): | Multiple access protocols (Computer network protocols), Drone aircraft, Wireless communication systems | |||||||||||||||
Journal or Publication Title: | IEEE Transactions on Communications | |||||||||||||||
Publisher: | IEEE | |||||||||||||||
ISSN: | 0090-6778 | |||||||||||||||
Official Date: | February 2020 | |||||||||||||||
Dates: |
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Volume: | 68 | |||||||||||||||
Number: | 2 | |||||||||||||||
Page Range: | pp. 1271-1283 | |||||||||||||||
DOI: | 10.1109/TCOMM.2019.2954136 | |||||||||||||||
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: | 13 November 2019 | |||||||||||||||
Date of first compliant Open Access: | 19 November 2019 | |||||||||||||||
RIOXX Funder/Project Grant: |
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