user

Optimal UAV deployment in downlink non-orthogonal multiple access system: a two-user case

被引：0
|
作者：
刘婷婷 [1 ]
Wang Yuntian [2 ]
Wang Junhua [3 ]
Pan Ziyu [1 ]
Yu Yu [1 ]
机构：
[1] School of Information and Communication Engineering,Nanjing Institute of Technology
[2] Nanjing University of Science and Technology
[3] Nanjing University of Aeronautics and Astronautics
来源：
High Technology Letters | 2020年 / 26卷 / 04期
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
TN929.5 [移动通信]; V279 [无人驾驶飞机];
学科分类号：
1111 ;
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.
引用
收藏
页码：411 / 416
页数：6
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