{"title":"Beyond Diagonal RIS: Key to Next-Generation Integrated Sensing and Communications?","authors":"Tara Esmaeilbeig;Kumar Vijay Mishra;Mojtaba Soltanalian","doi":"10.1109/LSP.2024.3511395","DOIUrl":null,"url":null,"abstract":"Reconfigurable intelligent surfaces (RIS) offer unprecedented flexibility for smart wireless channels. Recent research shows that RIS platforms enhance signal quality, coverage, and link capacity in integrated sensing and communication (ISAC) systems. This paper explores the use of fully-connected beyond diagonal RIS (BD-RIS) in ISAC. BD-RIS provides additional degrees of freedom by allowing non-zero off-diagonal elements in the scattering matrix, enhancing functionality and performance. We aim to maximize the weighted sum of the signal-to-noise ratio (SNR) at both the radar receiver and communication users using BD-RIS. Numerical results demonstrate the advantages of BD-RIS in ISAC, significantly improving SNR for both radar and communication users.","PeriodicalId":13154,"journal":{"name":"IEEE Signal Processing Letters","volume":"32 ","pages":"216-220"},"PeriodicalIF":3.2000,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10777522","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Signal Processing Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10777522/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Reconfigurable intelligent surfaces (RIS) offer unprecedented flexibility for smart wireless channels. Recent research shows that RIS platforms enhance signal quality, coverage, and link capacity in integrated sensing and communication (ISAC) systems. This paper explores the use of fully-connected beyond diagonal RIS (BD-RIS) in ISAC. BD-RIS provides additional degrees of freedom by allowing non-zero off-diagonal elements in the scattering matrix, enhancing functionality and performance. We aim to maximize the weighted sum of the signal-to-noise ratio (SNR) at both the radar receiver and communication users using BD-RIS. Numerical results demonstrate the advantages of BD-RIS in ISAC, significantly improving SNR for both radar and communication users.
期刊介绍：
The IEEE Signal Processing Letters is a monthly, archival publication designed to provide rapid dissemination of original, cutting-edge ideas and timely, significant contributions in signal, image, speech, language and audio processing. Papers published in the Letters can be presented within one year of their appearance in signal processing conferences such as ICASSP, GlobalSIP and ICIP, and also in several workshop organized by the Signal Processing Society.
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