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Technology of Network & Communication
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App. Res. of Comp. Printed Article
Vol. 39, 2022 No. 7
2114-2119

Joint optimization algorithm for reconfigurable intelligent surface and wireless relaying assisted UAV communication system

Li Yicong
Huang Gaofei
Zhou Fasheng
Zhao Sai
Tang Dong
School of Electronics & Communication Engineering, Guangzhou University, Guangzhou 510006, China
DOI: 10.19734/j.issn.1001-3695.2021.12.0682

Abstract

For reconfigurable intelligent surface(RIS) and decode-and-forward(DF) relaying assisted unmanned aerial vehicle(UAV) communication system, this paper proposed a joint optimization algorithm to optimize the reflection phase of RIS, the deployment location of UAV, and time allocation for DF relay. Firstly, it formulated a joint resource allocation optimization problem for maximizing achievable transmission rate. The problem was non-convex, thus it derived an alternating optimization algorithm that decomposed the non-convex problem into three sub-problems that optimized the reflection phase of RIS, the UAV deployment location, and the cooperative relay transmission time slot, respectively. Among them, the reflection phase optimization sub-problem and the UAV deployment location optimization sub-problem were still non-convex. Therefore, it used the semidefinite relaxation method and a local area optimization method based on successive convex approximation to solve the two problems, respectively. The research obtained the sub-optimal solution of the original problem by alternating and iterative optimization of the three sub-problems. The simulation results verify that the proposed joint optimization algorithm can obtain a higher system achievable transmission rate than other benchmark schemes, and the optimal deployment position of the UAV is close to above the relay or above the RIS, which is related to factors such as the signal-to-noise ratio of the system, the number of reflective elements of RIS, and the geographical locations of RIS and relay.

Foundation Support

国家重点研发计划课题(2021YFB20124003)
国家自然科学基金资助项目(61872098,61902084)
广东省自然科学基金资助项目(2021A1515011812)
广州市创新创业重点资助项目(2020PT104)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2021.12.0682
Publish at: Application Research of Computers Printed Article, Vol. 39, 2022 No. 7
Section: Technology of Network & Communication
Pages: 2114-2119
Serial Number: 1001-3695(2022)07-031-2114-06

Publish History

[2022-03-08] Accepted Paper
[2022-07-05] Printed Article

Cite This Article

李一聪, 黄高飞, 周发升, 等. 基于智能反射面辅助与无线中继的无人机协作通信系统优化算法 [J]. 计算机应用研究, 2022, 39 (7): 2114-2119. (Li Yicong, Huang Gaofei, Zhou Fasheng, et al. Joint optimization algorithm for reconfigurable intelligent surface and wireless relaying assisted UAV communication system [J]. Application Research of Computers, 2022, 39 (7): 2114-2119. )

About the Journal

  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

Application Research of Computers has many high-level readers and authors, and its readers are mainly senior and middle-level researchers and engineers engaged in the field of computer science, as well as teachers and students majoring in computer science and related majors in colleges and universities. Over the years, the total citation frequency and Web download rate of Application Research of Computers have been ranked among the top of similar academic journals in this discipline, and the academic papers published are highly popular among the readers for their novelty, academics, foresight, orientation and practicality.

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