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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 surface (RIS) has recently drawn intensive attention due to its potential of simultaneously realizing high spectral and energy efficiency in a sustainable way. This paper focuses on the design of efficient…

Information Theory · Computer Science 2023-03-17 Wei Jiang , Hans D. Schotten

Reconfigurable intelligent surface (RIS) is a promising technology to enhance the spectral and energy efficiency in a wireless communication system. The design of the phase shifts of an RIS in every channel coherence interval demands a huge…

Signal Processing · Electrical Eng. & Systems 2024-05-15 Sadaf Syed , Dominik Semmler , Donia Ben Amor , Michael Joham , Wolfgang Utschick

Reconfigurable intelligent surface (RIS)-assisted communications is one of the promising candidates for next generation wireless networks by controlling the propagation environment dynamically. In this study, a channel modeling strategy for…

Information Theory · Computer Science 2021-11-03 Fatih Kilinc , Ibrahim Yildirim , Ertugrul Basar

The ever-growing popularity and rapid improving of artificial intelligence (AI) have raised rethinking on the evolution of wireless networks. Mobile edge computing (MEC) provides a natural platform for AI applications since it provides rich…

Information Theory · Computer Science 2021-02-08 Shanfeng Huang , Shuai Wang , Rui Wang , Miaowen Wen , Kaibin Huang

Reconfigurable intelligent surfaces (RISs) represent a promising candidate for sixth-generation (6G) wireless networks, as the RIS technology provides a new solution to control the propagation channel in order to improve the efficiency of a…

Information Theory · Computer Science 2022-08-15 Mohamad H. Dinan , Nemanja Stefan Perovic , Mark F. Flanagan

Reconfigurable intelligent surface (RIS) is a promising technology that can reshape the electromagnetic environment in wireless networks, offering various possibilities for enhancing wireless channels. Motivated by this, we investigate the…

Information Theory · Computer Science 2024-09-02 Shengguo Meng , Wankai Tang , Weicong Chen , Jifeng Lan , Qun Yan Zhou , Yu Han , Xiao Li , Shi Jin

Extremely large-scale reconfigurable intelligent surface (XL-RIS) can effectively overcome severe fading and provide higher communication performance. However, current research on XL-RIS overlooks the discrete phase-shift characteristics of…

Information Theory · Computer Science 2025-08-27 Qian Zhang , Zheng Dong , Zheng Dong , Yao Ge , Yong Liang Guan , Ju Liu , Chau Yuen

The reconfigurable intelligent surface (RIS) is considered as a key enabler of the next-generation mobile radio systems. While attracting extensive interest from academia and industry due to its passive nature and low cost, scalability of…

Signal Processing · Electrical Eng. & Systems 2025-08-12 Bile Peng , Vahid Jamali , Eduard Jorswieck

Smart radio environments (SREs) are seen as a key rising concept of next generation wireless networks, where propagation channels between transmitters and receivers are purposely controlled. One promising approach to achieve such channel…

Signal Processing · Electrical Eng. & Systems 2022-03-15 Moustafa Rahal , Benoît Denis , Kamran Keykhosravi , Furkan Keskin , Bernard Uguen , George C. Alexandropoulos , Henk Wymeersch

Reconfigurable intelligent surfaces (RISs) are considered as potential technologies for the upcoming sixth-generation (6G) wireless communication system. Various benefits brought by deploying one or multiple RISs include increased spectrum…

Signal Processing · Electrical Eng. & Systems 2021-04-16 Jiguang He , Nhan Thanh Nguyen , Rafaela Schroeder , Visa Tapio , Joonas Kokkoniemi , Markku Juntti

Reconfigurable intelligent surfaces (RISs) have been proposed as a key enabler to improve the coverage of the signals and mitigate the frequent blockages in millimeter wave (mmWave) multiple-input multiple-output (MIMO) communications.…

Signal Processing · Electrical Eng. & Systems 2021-07-16 Rafaela Schroeder , Jiguang He , Glauber Brante , Markku Juntti

Reconfigurable intelligent surface (RIS)-assisted communication appears as one of the potential enablers for sixth generation (6G) wireless networks by providing a new way to optimize the communication system performance. This paper aims to…

Signal Processing · Electrical Eng. & Systems 2020-09-01 E. Basar , I. Yildirim

This chapter focuses on a hardware architecture for semi-passive Reconfigurable Intelligent Surfaces (RISs) and investigates its consideration for boosting the performance of Multiple-Input Multiple-Output (MIMO) communication systems. The…

Signal Processing · Electrical Eng. & Systems 2025-06-19 George C. Alexandropoulos , Konstantinos D. Katsanos , Evangelos Vlachos

Reconfigurable intelligent surfaces (RISs) have attracted increasing interest due to their ability to improve the coverage, reliability, and energy efficiency of millimeter wave (mmWave) communication systems. However, designing the RIS…

Signal Processing · Electrical Eng. & Systems 2022-11-15 Shuaifeng Jiang , Ahmed Hindy , Ahmed Alkhateeb

The technology of reconfigurable intelligent surfaces (RIS) has been showing promising potential in a variety of applications relying on Beyond-5G networks. Reconfigurable intelligent surface (RIS) can indeed provide fine channel…

Signal Processing · Electrical Eng. & Systems 2023-03-28 Moustafa Rahal , Benoit Denis , Kamran Keykhosravi , Musa Furkan Keskin , Bernard Uguen , George C. Alexandropoulos , Henk Wymeersch

The march towards 6G is accelerating and future wireless network architectures require enhanced performance along with significant coverage especially, to combat impairments on account of the wireless channel. Reconfigurable intelligent…

Signal Processing · Electrical Eng. & Systems 2023-08-16 Emre Arslan , Fatih Kilinc , Ertugrul Basar , Huseyin Arslan

The advent of Reconfigurable Intelligent Surfaces (RISs) in wireless communication networks unlocks the way to support high frequency radio access (e.g. in millimeter wave) while overcoming their sensitivity to the presence of deep fading…

Information Theory · Computer Science 2022-05-31 Fatima Ezzahra Airod , Mattia Merluzzi , Paolo Di Lorenzo , Emilio Calvanese Strinati

Reconfigurable intelligent surfaces (RISs) are two dimensional (2D) metasurfaces which can intelligently manipulate electromagnetic waves by low-cost near passive reflecting elements. RIS is viewed as a potential key technology for the…

Signal Processing · Electrical Eng. & Systems 2022-06-07 Jie Huang , Cheng-Xiang Wang , Yingzhuo Sun , Rui Feng , Jialing Huang , Bolun Guo , Zhimeng Zhong , Tie Jun Cui

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…

Applied Physics · Physics 2023-09-25 Emanuel Colella , Luca Bastianelli , Franco Moglie , Valter Mariani Primiani