基于RIS辅助的通信感知一体化技术研究  

Research on RIS-aided Integrated Sensing and Communication

作　　者：杨锦 李牧野 张顺 YANG Jin;LI Muye;ZHANG Shun(School of Telecommunication Engineering,Xidian University,Xi’an 710071,China)

机构地区：[1]西安电子科技大学通信工程学院,陕西西安710071

出　　处：《无线电通信技术》2024年第2期334-341,共8页Radio Communications Technology

基　　金：国家自然科学基金(62271373)。

摘　　要：随着更大带宽、更高频段和更大规模天线阵列的使用,现代无线通信系统展现出了越来越强的空间辨识能力,表明了通信与感知融合的巨大潜力。立足于智能超表面(Reconfigurable Intelligent Surface, RIS)辅助通信感知一体化(Integrated Sensing and Communication, ISAC)技术,考虑通信感知性能边界,从信息论角度提出通感性能权衡方法,并结合多种通信、感知性能指标,构建ISAC网络完备的性能权衡理论体系。结合RIS辅助通信硬件结构特征,设计高精度、低复杂度的通信感知传输技术。设计通信感知多载波发射波束,采用RIS实现高低频协作大规模多输入多输出(Multiple-Input Multiple-Output, MIMO)通信感知波束优化,协同控制功率和调度无线资源,实现通信感知资源最优部署。旨在形成新型的RIS辅助通信感知增强框架,提升网络整体性能。With the use of larger bandwidth,higher frequency bands,and larger antenna arrays,modern wireless communication systems have shown increasingly strong spatial identification capabilities,demonstrating enormous potential of communication and perception fusion.This article is based on Reconfigurable Intelligent Surface(RIS)aided integrated sensing and communication.Firstly,we consider the performance boundary of Integrated Sensing and Communication(ISAC)system,propose a synesthesia performance balancing method from the perspective of information theory,and combine multiple communication and sensing performance indicators to construct a comprehensive performance balancing theoretical system for ISAC networks.Subsequently,based on the structural characteristics of RIS-aided communication hardware,a high-precision and low complexity ISAC transmission technology is designed.Finally,we design ISAC multi-carrier transmission beams,use RIS to achieve high and low frequency collaborative large-scale Multiple-Input Multiple-Output(MIMO)ISAC beam optimization,coordinate power control and scheduling wireless resources,and achieve optimal deployment of ISAC resources.The research on above technologies aims to form a new RIS-aided ISAC enhancement framework and improve the overall performance of the network.

关 键 词：智能超表面 大规模多输入多输出 通信感知一体化 性能权衡 波束设计 资源调度 

分 类 号：TN929.52[电子电信—通信与信息系统]