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A smart city involves, among other elements, intelligent transportation, crowd monitoring, and digital twins, each of which requires information exchange via wireless communication links and localization of connected devices and passive…

Signal Processing · Electrical Eng. & Systems 2023-03-10 Hui Chen , Hyowon Kim , Mustafa Ammous , Gonzalo Seco-Granados , George C. Alexandropoulos , Shahrokh Valaee , Henk Wymeersch

Reconfigurable intelligent surface (RIS) is a promising technology that has the potential to change the way we interact with the wireless propagating environment. In this paper, we design and fabricate an RIS system that can be used in the…

Signal Processing · Electrical Eng. & Systems 2023-08-08 Xilong Pei , Haifan Yin , Li Tan , Lin Cao , Taorui Yang

Among various promising candidate technologies for the sixth-generation (6G) wireless communications, recent advances in microwave metasurfaces have sparked a new research area of reconfigurable intelligent surfaces (RISs). By controllably…

Signal Processing · Electrical Eng. & Systems 2024-03-26 Jieao Zhu , Ze Gu , Qian Ma , Linglong Dai , Tie Jun Cui

This paper explores the integration of communication and sensing in modern wireless systems through the configuration of BS and RIS antenna elements. By leveraging time multiplexing for both communication and sensing, the proposed system…

Systems and Control · Electrical Eng. & Systems 2025-05-07 Rafael Augusto Pedriali , Isadora Martines Ferreira , Jose Carlos Marinello , Taufik Abrao

Reconfigurable intelligent surface (RIS) technology is a promising enabler for next-generation (NextG) wireless systems, capable of dynamically shaping the propagation environment. Integrating RIS within the open radio access network…

Signal Processing · Electrical Eng. & Systems 2026-04-21 Ali Fuat Sahin , Sefa Kayraklik , Ali Gorcin , Ibrahim Hokelek , Ertugrul Basar , Halim Yanikomeroglu

Reconfigurable intelligent surfaces (RISs) are expected to be a main component of future 6G networks, due to their capability to create a controllable wireless environment, and achieve extended coverage and improved localization accuracy.…

Signal Processing · Electrical Eng. & Systems 2025-02-27 Mustafa Ammous , Hui Chen , Henk Wymeersch , Shahrokh Valaee

In this paper, we consider a novel cellular network for aerial users, which is composed of dedicated base stations (BSs), whose antennas are directed towards aerial users, and traditional terrestrial BSs (TBSs). Besides, the dedicated BSs…

Systems and Control · Electrical Eng. & Systems 2023-04-07 Yujie Qin , Mustafa A. Kishk , Mohamed-Slim Alouini

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,…

Signal Processing · Electrical Eng. & Systems 2021-05-06 R. S. Prasobh Sankar , Battu Deepak , Sundeep Prabhakar Chepuri

Reconfigurable intelligent surfaces (RISs) are set to be a revolutionary technology in the 6th generation of wireless systems. In this work, we study the application of RIS in a multi-user passive localization scenario, where we have one…

Signal Processing · Electrical Eng. & Systems 2021-04-27 Kamran Keykhosravi , Musa Furkan Keskin , Satyam Dwivedi , Gonzalo Seco-Granados , Henk Wymeersch

Reconfigurable intelligent surfaces (RISs) have promising coverage and data rate gains for wireless communication systems in 5G and beyond. Prior work has mainly focused on analyzing the performance of these surfaces using computer…

A reconfigurable intelligent surface (RIS) is a prospective wireless technology that enhances wireless channel quality. An RIS is often equipped with passive array of elements and provides cost and power-efficient solutions for coverage…

Information Theory · Computer Science 2024-03-20 Hyuckjin Choi , Ly V. Nguyen , Junil Choi , A. Lee Swindlehurst

In this paper, we propose a novel aerial backhaul architecture that employs an aerial active reconfigurable intelligent surface (RIS) to achieve energy-efficient, {full 3D coverage including UAV-BSs and ground users in 6G wireless…

Signal Processing · Electrical Eng. & Systems 2026-01-27 Hong-Bae Jeon , Chan-Byoung Chae

This paper presents a promising design concept for reconfigurable intelligent surfaces (RISs), named plug-in RIS, wherein the RIS is plugged into an appropriate position in the environment, adjusted once according to the location of both…

Signal Processing · Electrical Eng. & Systems 2024-06-26 Mahmoud Raeisi , Ibrahim Yildirim , Mehmet Cagri Ilter , Majid Gerami , Ertugrul Basar

This paper investigates artificial intelligence (AI) empowered schemes for reconfigurable intelligent surface (RIS) assisted networks from the perspective of fast implementation. We formulate a weighted sum-rate maximization problem for a…

Signal Processing · Electrical Eng. & Systems 2024-04-19 Conggang Hu , Yang Lu , Hongyang Du , Mi Yang , Bo Ai , Dusit Niyato

The emerging reconfigurable intelligent surface (RIS) technology is promising for applications in the millimeter wave (mmWave) communication systems to effectively compensate for propagation loss or tackle the blockage issue. Considering…

Signal Processing · Electrical Eng. & Systems 2023-02-08 Yu Liu , Ming Chen , Cunhua Pan , Yijin Pan , Yinlu Wang , Yaoming Huang , Tianyang Cao , Jiangzhou Wang

In this paper, we investigate the performance of an RIS-aided wireless communication system subject to outdated channel state information that may operate in both the near- and far-field regions. In particular, we take two RIS deployment…

Information Theory · Computer Science 2022-01-25 Yan Zhang , Jiayi Zhang , Marco Di Renzo , Huahua Xiao , Bo Ai

This paper investigates the problem of resource allocation for a wireless communication network with distributed reconfigurable intelligent surfaces (RISs). In this network, multiple RISs are spatially distributed to serve wireless users…

Signal Processing · Electrical Eng. & Systems 2020-05-04 Zhaohui Yang , Mingzhe Chen , Walid Saad , Wei Xu , Mohammad Shikh-Bahaei , H. Vincent Poor , Shuguang Cui

Reconfigurable Intelligent Surface (RIS) has becoming a useful tool in future wireless communication systems for close-distance communication network. This paper we use Reconfigurable Intelligent Surface (RIS) for downlink multi-user…

Information Theory · Computer Science 2021-02-02 RuiTianYi Lu

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…

Information Theory · Computer Science 2020-04-21 Stefano Buzzi , Carmen D'Andrea , Alessio Zappone , Maria Fresia , Yong-Ping Zhang , Shulan Feng

In this paper, we study the statistical characterization and modeling of distributed multi-reconfigurable intelligent surface (RIS)-aided wireless systems. Specifically, we consider a practical system model where the RISs with different…

Information Theory · Computer Science 2021-10-01 Tri Nhu Do , Georges Kaddoum , Thanh Luan Nguyen , Daniel Benevides da Costa , Zygmunt J. Haas