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With the emergence of the internet of things (IoT) technology, wireless connectivity should be more ubiquitous than ever. In fact, the availability of wireless connection everywhere comes with security threats that, unfortunately, cannot be…

Signal Processing · Electrical Eng. & Systems 2020-09-11 Abdullateef Almohamad , Anas M. Tahir , Ayman Al-Kababji , Haji M. Furqan , Tamer Khattab , Mazen O. Hasna , Huseyin Arslan

Since security has been one of the crucial issues for high-yield communications such as 5G and 6G, the researchers continuously come up with newer techniques to enhance the security and performance of these progressive wireless…

Information Theory · Computer Science 2021-12-14 T. Hossain , S. Shabab , A. S. M. Badrudduza , M. K. Kundu , I. S. Ansari

Reconfigurable intelligent surface (RIS), a recently introduced technology for future wireless com-munication systems, enhances the spectral and energy efficiency by intelligently adjusting the propaga-tion conditions between a base station…

Signal Processing · Electrical Eng. & Systems 2022-03-08 Huimei Han , Jun Zhao , Zehui Xiong , Dusit Niyato , Wenchao Zhai , Marco Di Renzo , Quoc-Viet Pham , Weidang Lu

Leveraging on the reconfigurable intelligent surface (RIS) paradigm for enabling the next Internet of Things (IoT) and 6G era, this paper develops a comprehensive theoretical framework characterizing the performance of RIS-assisted…

Signal Processing · Electrical Eng. & Systems 2020-04-14 Imène Trigui , Wessam Ajib , Wei-Ping Zhu

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

As sixth-generation (6G) wireless communication networks evolve, privacy concerns are expected due to the transmission of vast amounts of security-sensitive private information. In this context, a reconfigurable intelligent surface (RIS)…

Networking and Internet Architecture · Computer Science 2023-12-06 JungSook Bae , Waqas Khalid , Anseok Lee , Heesoo Lee , Song Noh , Heejung Yu

Reconfigurable intelligent surfaces (RISs), also known as intelligent reflecting surfaces (IRSs), or large intelligent surfaces (LISs), have received significant attention for their potential to enhance the capacity and coverage of wireless…

Signal Processing · Electrical Eng. & Systems 2021-05-05 Yuanwei Liu , Xiao Liu , Xidong Mu , Tianwei Hou , Jiaqi Xu , Marco Di Renzo , Naofal Al-Dhahir

This letter investigates the performance of emerging wireless communication systems assisted by a fluid reconfigurable intelligent surface (FRIS). Unlike conventional reconfigurable intelligent surfaces (RISs), an FRIS consists of…

Reconfigurable intelligent surfaces (RIS) is considered as a revolutionary technique to improve the wireless system performance by reconfiguring the radio wave propagation environment artificially. Motivated by the potential of RIS in…

Signal Processing · Electrical Eng. & Systems 2020-12-03 Yun Ai , Felipe A. P. de Figueiredo , Long Kong , Michael Cheffena , Symeon Chatzinotas , Björn Ottersten

Reconfigurable Intelligent Surfaces (RIS) constitute a promising technology that could fulfill the extreme performance and capacity needs of the upcoming 6G wireless networks, by offering software-defined control over wireless propagation…

In this paper, we propose to utilize intelligent reflecting surfaces (IRSs) for enhancing the physical layer security of wireless communications systems. In particular, an IRS-assisted secure wireless system is considered, where a…

Information Theory · Computer Science 2020-02-26 Xianghao Yu , Dongfang Xu , Robert Schober

Reconfigurable intelligent surface (RIS)-empowered communication is one of the promising physical layer enabling technologies for the sixth generation (6G) wireless networks due to their unprecedented capabilities in shaping the wireless…

Signal Processing · Electrical Eng. & Systems 2025-11-17 Aymen Khaleel , Recep Vural , Mehmet Cagri Ilter , Majid Gerami , Ertugrul Basar

A reconfigurable intelligent surface (RIS) is commonly made of low-cost passive and reflective meta-materials with excellent beam steering capabilities. It is applied to enhance wireless communication systems as a customizable signal…

Signal Processing · Electrical Eng. & Systems 2024-07-16 Kun Chen-Hu , Petar Popovski

The idea of using a Reconfigurable Intelligent Surface (RIS) consisting of a large array of passive scattering elements to assist wireless communication systems has recently attracted much attention from academia and industry. A central…

Information Theory · Computer Science 2021-05-14 Zipeng Wang , Li Tan , Haifan Yin , Kai Wang , Xilong Pei , David Gesbert

Reconfigurable intelligent surfaces (RISs) are considered a promising technology for boosting the coverage and for enhancing the spectral efficiency of wireless systems, as well as for taming the wireless environment. The potential benefits…

Information Theory · Computer Science 2021-11-23 Bjorn Sihlbom , Marios I. Poulakis , Marco Di Renzo

The concept of fluid reconfigurable intelligent surface (FRIS) upgrades the conventional reconfigurable intelligent surface (RIS) paradigm by empowering its reflecting elements with positioning reconfigurability. This letter aims to…

Information Theory · Computer Science 2025-11-21 Xusheng Zhu , Kai-Kit Wong , Boyi Tang , Wen Chen , Chan-Byoung Chae

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…

In this paper, we introduce an intelligent reflecting surface (IRS) to provide a programmable wireless environment for physical layer security. By adjusting the reflecting coefficients, the IRS can change the attenuation and scattering of…

Signal Processing · Electrical Eng. & Systems 2019-06-21 Jie Chen , Ying-Chang Liang , Yiyang Pei , Huayan Guo

Reconfigurable intelligent surface (RIS) technology offers significant promise in enhancing wireless communication systems, but its dual-use potential also introduces substantial security risks. This survey explores the security…

Signal Processing · Electrical Eng. & Systems 2025-10-14 Hetong Wang , Tiejun Lv , Yashuai Cao , Weicai Li , Jie Zeng , Pingmu Huang , Muhammad Khurram Khan

Wireless communications empowered by Reconfigurable Intelligent (meta)Surfaces (RISs) are recently gaining remarkable research attention due to the increased system design flexibility offered by RISs for diverse functionalities. In this…

Information Theory · Computer Science 2020-11-03 George C. Alexandropoulos , Konstantinos Katsanos , Miaowen Wen , Daniel B. da Costa