Joint Optimization of STAR-RIS Assisted UAV Communication Systems

Qin Zhang; Yang Zhao; Hai Li; Shujuan Hou; Zhengyu Song

doi:10.1109/LWC.2022.3204353

Joint Optimization of STAR-RIS Assisted UAV Communication Systems

Qin Zhang, Yang Zhao, Hai Li^*, Shujuan Hou, Zhengyu Song

^*此作品的通讯作者

信息与电子学院

科研成果: 期刊稿件 › 文章 › 同行评审

27 引用（Scopus）

摘要

In this letter, we study the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted unmanned aerial vehicle (UAV) communications. Our goal is to maximize the sum rate of all users by jointly optimizing the STAR-RIS's beamforming vectors, the UAV's trajectory and power allocation. We decompose the formulated non-convex problem into three subproblems and solve them alternately to obtain the solution. Simulations show that: 1) the STAR-RIS achieves a higher sum rate than traditional RIS; 2) to exploit the benefits of STAR-RIS, the UAV's trajectory is closer to STAR-RIS than that of RIS; 3) the energy splitting for reflection and transmission highly depends on the real-time trajectory of UAV.

源语言	英语
页（从-至）	2390-2394
页数	5
期刊	IEEE Wireless Communications Letters
卷	11
期	11
DOI	https://doi.org/10.1109/LWC.2022.3204353
出版状态	已出版 - 1 11月 2022

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10.1109/LWC.2022.3204353

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title = "Joint Optimization of STAR-RIS Assisted UAV Communication Systems",

abstract = "In this letter, we study the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted unmanned aerial vehicle (UAV) communications. Our goal is to maximize the sum rate of all users by jointly optimizing the STAR-RIS's beamforming vectors, the UAV's trajectory and power allocation. We decompose the formulated non-convex problem into three subproblems and solve them alternately to obtain the solution. Simulations show that: 1) the STAR-RIS achieves a higher sum rate than traditional RIS; 2) to exploit the benefits of STAR-RIS, the UAV's trajectory is closer to STAR-RIS than that of RIS; 3) the energy splitting for reflection and transmission highly depends on the real-time trajectory of UAV.",

keywords = "Reconfigurable intelligent surface, passive beamforming, power allocation, simultaneous transmission and reflection, trajectory design, unmanned aerial vehicle",

author = "Qin Zhang and Yang Zhao and Hai Li and Shujuan Hou and Zhengyu Song",

note = "Publisher Copyright: {\textcopyright} 2012 IEEE.",

year = "2022",

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T1 - Joint Optimization of STAR-RIS Assisted UAV Communication Systems

AU - Zhang, Qin

AU - Zhao, Yang

AU - Li, Hai

AU - Hou, Shujuan

AU - Song, Zhengyu

PY - 2022/11/1

Y1 - 2022/11/1

N2 - In this letter, we study the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted unmanned aerial vehicle (UAV) communications. Our goal is to maximize the sum rate of all users by jointly optimizing the STAR-RIS's beamforming vectors, the UAV's trajectory and power allocation. We decompose the formulated non-convex problem into three subproblems and solve them alternately to obtain the solution. Simulations show that: 1) the STAR-RIS achieves a higher sum rate than traditional RIS; 2) to exploit the benefits of STAR-RIS, the UAV's trajectory is closer to STAR-RIS than that of RIS; 3) the energy splitting for reflection and transmission highly depends on the real-time trajectory of UAV.

AB - In this letter, we study the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted unmanned aerial vehicle (UAV) communications. Our goal is to maximize the sum rate of all users by jointly optimizing the STAR-RIS's beamforming vectors, the UAV's trajectory and power allocation. We decompose the formulated non-convex problem into three subproblems and solve them alternately to obtain the solution. Simulations show that: 1) the STAR-RIS achieves a higher sum rate than traditional RIS; 2) to exploit the benefits of STAR-RIS, the UAV's trajectory is closer to STAR-RIS than that of RIS; 3) the energy splitting for reflection and transmission highly depends on the real-time trajectory of UAV.

KW - Reconfigurable intelligent surface

KW - passive beamforming

KW - power allocation

KW - simultaneous transmission and reflection

KW - trajectory design

KW - unmanned aerial vehicle

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Joint Optimization of STAR-RIS Assisted UAV Communication Systems

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