| Liu Tingting (刘婷婷),Wang Yuntian**,Wang Junhua***,Pan Ziyu*,Yu Yu*.[J].高技术通讯(英文),2020,26(4):411~416 |
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| Optimal UAV deployment in downlink non-orthogonal multiple access system: a two-user case |
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| DOI：10.3772/j.issn.1006-6748.2020.04.008 |
| 中文关键词: |
| 英文关键词: unmanned aerial vehicle (UAV) deployment, downlink non-orthogonal multiple access (NOMA), two-user case |
| 基金项目: |
| Author Name | Affiliation | | Liu Tingting (刘婷婷) | (*School of Information and Communication Engineering, Nanjing Institute of Technology, Nanjing 211167, P.R.China) | | Wang Yuntian** | (**Nanjing University of Science and Technology, Nanjing 210094, P.R.China) | | Wang Junhua*** | (***Nanjing University of Aeronautics and Astronautics, Nanjing 210024, P.R.China) | | Pan Ziyu* | (*School of Information and Communication Engineering, Nanjing Institute of Technology, Nanjing 211167, P.R.China) | | Yu Yu* | (*School of Information and Communication Engineering, Nanjing Institute of Technology, Nanjing 211167, P.R.China) |
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| 中文摘要: |
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| 英文摘要: |
| This paper investigates a unmanned aerial vehicle (UAV) deployment problem in a non-orthogonal multiple access (NOMA) system, where the UAV is deployed as an aerial mobile base station to transmit data to two ground users. An optimization problem is formulated by deploying the UAV for maximizing the sum rate of the two users. In order to solve the optimization problem, the feasible solution region is first reduced to a line segment between two users. Then, the optimization problem is simplified to a univariate problem, which can be solved by derivation under a certain situation, and the corresponding analytical solution is also provided.Moreover, a generalized algorithm, which considers 2 situations, is proposed to further determine the optimal UAV’s location. Specifically, four cases are discussed in the first situation. Extensive simulations are depicted to demonstrate effectiveness of the proposed algorithm and its superiority over the benchmarks in maximizing the two users’ sum rate. |
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