智能反射表面辅助的反向散射通信系统研究综述

A Review of Reconfigurable Intelligent Surface Assisted Backscatter Communication Systems

智能反射表面技术因其具有智能重构无线通信环境的卓越能力,在6G中具有广泛的应用。反向散射通信技术作为低功率通信的典型技术,可应用于超低功率通信和低成本物联网设备。概述了智能反射表面技术和反向散射通信技术,并对其研究意义进行了分析;从性能分析、信道估计、波束赋形、资源调度等多方面总结分析了反向散射通信技术和智能反射表面技术的研究现状及发展趋势。在此基础上,对智能反射表面辅助的反向散射通信系统进行了探讨,并对未来发展方向进行了展望。

Reconfigurable intelligent surface technology has a broad application in 6G networks owing to its superior capability of intelligently reconfiguring wireless communication environment.As a typical technology of low power technology,backscatter communication technology can be applied to ultra-low power communication and low-cost Internet of things devices.This paper summarizes the reconfigurable intelligent surface technology and backscatter communication technology and analyzes its significance of study;from the aspect of performance analysis,channel estimation,beamforming and resource allocation,we introduce the research status and development of backscatter communication and reconfigurable intelligent surface technology.Based on the existing research progress,the reconfigurable intelligent surface assisted backscatter communication system is discussed,and future development direction is prospected.