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一种基于IRS和UAV辅助通信系统分析

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为提升智能反射面(IRS)和无人机(UAV)辅助混合通信系统的数据传输速率,提出一种优化用户速率方案.该方案考虑了全双工UAV(FD-UAV)辅助传输模式,IRS辅助传输模式和IRS、FD-UAV辅助混合传输模式(IRS-FD-UAV).建立联合IRS被动波束形成相位(PBP)和UAV/IRS位置的最大化用户速率的目标问题.考虑目标问题的非凸性,利用块坐标下降法(BCD)将原目标问题分解成 2个子问题,分别利用黎曼共轭梯度法和交替求解法求解.性能分析表明,相比于FD-UAV和IRS辅助传输模式,IRS-FD-UAV辅助传输模式具有较高的传输速率.
Analysis of IRS and UAV-aided Communication System
To improve user's rate in intelligent reflecting surface(IRS)and unmanned aerial vehicle(UAV)-aided hybrid communication system,an optimized user rate scheme is proposed in this paper.In the scheme three different transmission modes are taken into account,i.e.,① FD-UAV(full duplex-UAV,FD-UAV)-aided transmission;②RIS-aided transmission;③joint RIS-FD-UAV transmission.Firstly,the joint passive beamforming phase and position of UAV/RIS optimization problem is formulated to maximize the user's rate.Due to the non-convex of the optimization problem,the optimization problem is divided into two sub-problems through block coordinate descent approach.Then,the two sub-problems are solved respectively by Riemannian conjugate gradient method and sequential approach.The performance analysis shows that the joint RIS-FD-UAV transmission mode achieves the best user's rate among all three modes.At the same time,the PBP has a greater impact on user's rate than position of UAV/IRS.In addition,we demonstrate the impact of reflecting elements and available transmit power on the system's performance.

intelligent reflecting surfaceunmanned aerial vehiclenon-orthogonal multiple accesspassive beamforming phasesequential approach

吴昊、张延年、柴永生

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南京交通职业技术学院电子信息工程学院,南京 211188

江苏省教育考试院,南京 210024

智能反射面 无人机 非正交多址接入 被动波束形成相位 交替求解法

2021年江苏省高校"青蓝工程"培养对象优秀教学团队项目2023-2024年度江苏职业教育研究重点课题南京交通职业技术学院重大课题南京交通职业技术学院重点课题

苏教师函[2021]11号XHZDB2023030JZ2304JZ2306

2024

实验室研究与探索
上海交通大学

实验室研究与探索

CSTPCD北大核心
影响因子:1.69
ISSN:1006-7167
年,卷(期):2024.43(9)