庞海舰
1，陈健锋
1，张广驰
1，崔苗
1，武庆庆
2
（1. 广东工业大学，中国 广东 510006；2. 澳门大学智慧城市物联网国家重点实验室，中国 澳门 999078）
摘要：智能反射面（IRS）是6G的关键技术之一。优化IRS的被动反射波束赋形，能够对无线信息传输（WIT）与无线能量传输（WPT）进行辅助，从而大幅提高频谱效率。全面介绍了IRS的研究现状。首先，对IRS辅助WIT的研究现状进行了归纳分析，表明IRS对提升系统通信性能起到关键作用；然后，对IRS辅助WPT的研究进行了梳理，揭示了IRS在大幅提升能量传输效率方面的潜能；随后，重点叙述了IRS辅助无线携能通信的研究现状，并展望了物理层安全、无人机通信和多IRS协同辅助等6个新研究主题和方向。
关键词：IRS；WIT；WPT；无线携能通信
Survey on Intelligent Reflecting Surface-Assisted Wireless Information Transmission and Power Transfer
PANG Haijian1, CHEN Jianfeng1, ZHANG Guangchi1, CUI Miao1, WU Qingqing2
(1. Guangdong University of Technology, Guangzhou 510006, China; 2. State Key Laboratory of Internet of Things for Smart City, University of Macau, Macau 999078, China)
Abstract: With the ability to assist and greatly improve the spectrum efficiency of wireless information transmission (WIT) and wireless power transfer (WPT), intelligent reflecting surface (IRS) is envisioned as a key technology for future 6G communications. A comprehensive overview of the domestic and international research status of IRS-assisted WIT and WPT is proposed. First, the research on IRS-assisted WIT is summarized and analyzed, which shows that IRS plays an essential role in improving the performance of various WIT systems. Second, the research on IRS-assisted WPT is discussed, which reveals the great potential of the IRS in enhancing energy transfer efficiency. Then, the research on IRS-assisted simultaneous wireless information and power transfer (SWIPT) is emphatically described, and six future research directions of IRS-assisted SWIPT are prospected, including physical layer security, unmanned aerial vehicle (UAV) communication,
multi-IRS cooperative assistance, and so on.
Keywords: IRS; WIT; WPT; simultaneous wireless information and power transfer
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