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In this paper, we use a reconfigurable intelligent surface (RIS) to enhance the radar sensing and communication capabilities of a mmWave dual function radar communication system. To simultaneously localize the target and to serve the user,…

信号处理 · 电气工程与系统科学 2021-05-06 R. S. Prasobh Sankar , Battu Deepak , Sundeep Prabhakar Chepuri

We provide an analytical characterization of the coverage region of simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS)-aided two-user downlink communication systems. The cases of orthogonal multiple…

信息论 · 计算机科学 2023-06-02 Farshad Rostami Ghadi , F. Javier Lopez-Martinez , Kai-Kit Wong

Reconfigurable intelligent surface (RIS) can improve the communications between a source and a destination. Recently, continuous aperture RIS is proved to have better communication performance than discrete aperture RIS and has received…

信号处理 · 电气工程与系统科学 2022-10-04 Yuhua Jiang , Feifei Gao , Mengnan Jian , Shun Zhang , Wei Zhang

This paper introduces a novel approach of utilizing the reconfigurable intelligent surface (RIS) for joint data modulation and signal beamforming in a multi-user downlink cellular network by leveraging the idea of backscatter communication.…

信息论 · 计算机科学 2021-08-25 Haseeb Ur Rehman , Faouzi Bellili , Amine Mezghani , Ekram Hossain

Consider a communication system in which a single antenna user equipment exchanges information with a multi-antenna base station via a reconfigurable intelligent surface (RIS) in the presence of spatially correlated channels and…

信息论 · 计算机科学 2023-12-14 Wen-Xuan Long , Marco Moretti , Andrea Abrardo , Luca Sanguinetti , Rui Chen

Future wireless networks are envisioned to deliver not only gigabit communications but also ubiquitous sensing. Reconfigurable intelligent surfaces (RISs) have emerged to reshape radio propagation, recently showing considerable promise for…

信号处理 · 电气工程与系统科学 2025-09-22 Ziyuan Zheng , Qingqing Wu , Yanze Zhu , Wen Chen , Ying Gao , Honghao Wang

Reconfigurable intelligent surface (RIS) is a promising reflective radio technology for improving the coverage and rate of future wireless systems by reconfiguring the wireless propagation environment. The current work mainly focuses on the…

网络与互联网体系结构 · 计算机科学 2021-03-24 Xuelin Cao , Bo Yang , Hongliang Zhang , Chongwen Huang , Chau Yuen , Zhu Han

Reconfigurable Intelligent Surfaces (RISs) are recently attracting a wide interest due to their capability of tuning wireless propagation environments in order to increase the system performance of wireless networks. In this paper, a…

信息论 · 计算机科学 2020-04-21 Stefano Buzzi , Carmen D'Andrea , Alessio Zappone , Maria Fresia , Yong-Ping Zhang , Shulan Feng

Recently, reconfigurable intelligent surfaces (RIS) have attracted a lot of attention due to their capability of extending cell coverage by reflecting signals toward the receiver. In this letter, we analyze the coverage of a downlink…

信息论 · 计算机科学 2020-09-18 Shuhao Zeng , Hongliang Zhang , Boya Di , Zhu Han , Lingyang Song

The next generation of wireless systems will take the concept of communications and networking to another level through the seamless integration of terrestrial, aerial, satellite, maritime and underwater communication systems.…

网络与互联网体系结构 · 计算机科学 2022-08-02 Parisa Ramezani , Bin Lyu , Abbas Jamalipour

This paper proposes a novel framework of resource allocation in intelligent reflecting surface (IRS) aided multi-cell non-orthogonal multiple access (NOMA) networks, where a sum-rate maximization problem is formulated. To address this…

信号处理 · 电气工程与系统科学 2020-12-08 Wanli Ni , Xiao Liu , Yuanwei Liu , Hui Tian , Yue Chen

This paper explores the potential of aerial reconfigurable intelligent surfaces (ARIS) to enhance coordinated multi-point non-orthogonal multiple access (CoMP-NOMA) networks. We consider a system model where a UAV-mounted RIS assists in…

信号处理 · 电气工程与系统科学 2024-11-05 Muhammad Umer , Muhammad Ahmed Mohsin , Aamir Mahmood , Kapal Dev , Haejoon Jung , Mikael Gidlund , Syed Ali Hassan

Reconfigurable intelligent surface (RIS) is a promising technology for 6G networks owing to its superior ability to enhance the capacity and coverage of wireless communications by smartly creating a favorable propagation environment. In…

信号处理 · 电气工程与系统科学 2023-01-27 Rang Liu , Ming Li , Yang Liu , Qingqing Wu , Qian Liu

As a revolutionary technology, reconfigurable intelligent surface (RIS) has been deemed as an indispensable part of the 6th generation communications due to its inherent ability to regulate the wireless channels. However, passive RIS (PRIS)…

信息论 · 计算机科学 2024-03-19 Xuehua Li , Yingjie Pei , Xinwei Yue , Yuanwei Liu , Zhiguo Ding

Reconfigurable intelligent surfaces (RIS) have drawn considerable attention recently due to their controllable scattering elements that are able to direct electromagnetic waves into desirable directions. Although RISs share some…

信息论 · 计算机科学 2021-04-08 Mohanad Obeed , Anas Chaaban

Reconfigurable intelligent surface (RIS)-empowered communication is one of the promising 6G technologies that allows the conversion of the wireless channel into an intelligent transmit entity by manipulating the impinging waves using…

信息论 · 计算机科学 2020-09-01 I. Yildirim , A. Uyrus , E. Basar

This paper considers a reconfigurable intelligent surface (RIS) aided orthogonal frequency division multiplexing (OFDM) relaying system, and investigates the joint design of RIS passive beamforming and subcarrier matching under two cases,…

信息论 · 计算机科学 2022-10-06 Tong Zhang , Shuai Wang , Yufan Zhuang , Changsheng You , Miaowen Wen , Yik-Chung Wu

We consider a multi-user multiple-input single-output (MISO) communications system which is assisted by a hybrid active-passive reconfigurable intelligent surface (RIS). Unlike conventional passive RISs, hybrid RIS is equipped with a few…

信息论 · 计算机科学 2022-03-22 Nhan Thanh Nguyen , Van-Dinh Nguyen , Qingqing Wu , Antti Tolli , Symeon Chatzinotas , Markku Juntti

Reconfigurable intelligent surface (RIS) is a type of wireless communication technology that uses a reconfigurable surface, such as a wall or building that is able to adjust its properties by an integrated optimization algorithm in order to…

应用物理 · 物理学 2023-09-25 Emanuel Colella , Luca Bastianelli , Franco Moglie , Valter Mariani Primiani

Reconfigurable Intelligent Surface (RIS) technology has emerged as a transformative solution for enhancing satellite networks in next-generation wireless communication. The integration of RIS in satellite networks addresses critical…

新兴技术 · 计算机科学 2025-02-25 Wali Ullah Khan , Eva Lagunas , Symeon Chatzinotas