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Recently, reconfigurable intelligent surfaces (RISs) have drawn intensive attention to enhance the coverage of millimeter wave (mmWave) communication systems. However, existing works mainly consider the RIS as a whole uniform plane, which…

Information Theory · Computer Science 2024-10-30 Weicong Chen , Xi Yang , Shi Jin , Pingping Xu

Millimetre wave (mm-wave) communication is considered as one of the most important enablers for the fifth generation communication (5G) system to support data rate of Gbps and above. In some scenarios, it is crucial to maintain a line of…

Information Theory · Computer Science 2017-06-05 Yinan Qi , Mythri Hunukumbure , Yue Wang

Reconfigurable intelligent surface (RIS) is a novel meta-material which can form a smart radio environment by dynamically altering reflection directions of the impinging electromagnetic waves. In the prior literature, the inter-RIS links…

Information Theory · Computer Science 2024-03-13 Kaizhe Xu , Jiajia Guo , Jun Zhang , Shi Jin , Shaodan Ma

One of the promising technologies for the next generation wireless networks is the reconfigurable intelligent surfaces (RISs). This technology provides planar surfaces the capability to manipulate the reflected waves of impinging signals,…

Information Theory · Computer Science 2020-07-20 Mustafa A. Kishk , Mohamed-Slim Alouini

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 surface (RIS)-assisted communication appears as one of the potential enablers for sixth generation (6G) wireless networks by providing a new degree of freedom in the system design to telecom operators.…

Signal Processing · Electrical Eng. & Systems 2021-09-21 E. Basar , I. Yildirim , F. Kilinc

Spectrum scarcity has motivated the exploration of the millimeter-wave (mmWave) band as a key technology to cope with the ever-increasing data traffic. However, in this band, radiofrequency waves are highly susceptible to transmission loss…

Signal Processing · Electrical Eng. & Systems 2023-06-22 Aline Habib , Israa Khaled , Ammar El Falou , Charlotte Langlais

Reconfigurable intelligent surfaces (RISs) enable reliable low-latency millimeter wave (mmWave) communication links in cases of a blocked line-of-sight (LoS) between the base station (BS) and the user equipment (UE), i.e. a RIS mounted on a…

Systems and Control · Electrical Eng. & Systems 2024-02-13 Hamed Radpour , Markus Hofer , David Loschenbrand , Lukas Walter Mayer , Andreas Hofmann , Martin Schiefer , Thomas Zemen

In millimeter wave (mmWave) systems, it is challenging to ensure the reliable connectivity of communications due to its sensitivity to the presence of blockages. In order to improve the robustness of the mmWave system under the presence of…

Information Theory · Computer Science 2021-09-01 Gui Zhou , Cunhua Pan , Hong Ren , Kezhi Wang , Marco Di Renzo

Reconfigurable intelligent surface-assisted integrated sensing and communication (RIS-ISAC) presents a promising system architecture to leverage the wide bandwidth available at millimeter-wave (mmWave) frequencies, while mitigating severe…

Signal Processing · Electrical Eng. & Systems 2025-08-12 Yueheng Li , Xueyun Long , Mario Pauli , Suheng Tian , Xiang Wan , Benjamin Nuss , Tiejun Cui , Haixia Zhang , Thomas Zwick

Reconfigurable intelligent surface (RIS) has been identified as a promising technology for future wireless communication systems due to its ability to manipulate the propagation environment intelligently. RIS is a frequency-selective…

Signal Processing · Electrical Eng. & Systems 2024-08-06 Abdelhamid Salem , Kai-Kit Wong , Chan-Byoung Chae , Yangyang Zhang

Reconfigurable intelligent surface (RIS) is considered as a promising solution for next-generation wireless communication networks due to a variety of merits, e.g., customizing the communication environment. Therefore, deploying multiple…

Signal Processing · Electrical Eng. & Systems 2023-02-09 Mengbing Liu , Chongwen Huang , Marco Di Renzo , Merouane Debbah , Chau Yuen

The reconfigurable intelligent surface (RIS) technology allows one to engineer spatial diversity in complex cellular networks. This paper provides a framework for the system-level performance assessment of RIS-assisted networks and in…

Information Theory · Computer Science 2024-11-12 Guodong Sun , Francois Baccelli , Ke Feng , Luis Uzeda Garcia , Stefano Paris

Millimeter-wave (mmWave) communication opens up tens of giga-hertz (GHz) spectrum in the mmWave band for use by next-generation wireless systems, thereby solving the problem of spectrum scarcity. Maintaining connectivity stands out to be a…

Information Theory · Computer Science 2018-02-27 Kaifeng Han , Kaibin Huang , Ying Cui , Yueping Wu

Intelligent reflecting surface (IRS) is envisioned as a promising solution for controlling radio propagation environments in future wireless systems. In this paper, we propose a distributed intelligent reflecting surface (IRS) assisted…

Signal Processing · Electrical Eng. & Systems 2020-11-02 Yashuai Cao , Tiejun Lv , Wei Ni

Millimeter-wave (mmWave) bands have been attracting growing attention as a possible candidate for next-generation cellular networks, since the available spectrum is orders of magnitude larger than in current cellular allocations. To…

Networking and Internet Architecture · Computer Science 2018-05-14 Mattia Rebato , Jihong Park , Petar Popovski , Elisabeth De Carvalho , Michele Zorzi

Reconfigurable intelligent surfaces (RISs) can establish favorable wireless environments to combat the severe attenuation and blockages in millimeter-wave (mmWave) bands. However, to achieve the optimal enhancement of performance, the…

Information Theory · Computer Science 2022-03-02 Muxin He , Jindan Xu , Wei Xu , Hong Shen , Ning Wang , Chunming Zhao

The number of train passengers and the demand for high data rates to handle new technologies such as video streaming and IoT technologies are continuously increasing. Therefore the exploration of millimeter waves (mmWave) band is a key…

Signal Processing · Electrical Eng. & Systems 2023-07-11 Aline Habib , Ammar El Falou , Charlotte Langlais , Marion Berbineau

Reconfigurable intelligent surfaces (RISs) have shown the potential to improve signal-to-interference-plus-noise ratio (SINR) related coverage, especially at high-frequency communications. However, assessing electromagnetic field exposure…

Signal Processing · Electrical Eng. & Systems 2025-12-22 Lin Chen , Ahmed Elzanaty , Mustafa A Kishk , Ying-Jun Angela Zhang

Reconfigurable intelligent surfaces (RISs) provide alternative routes for reflected signals to network users, offering numerous applications. This paper explores an innovative approach of strategically deploying RISs along road areas to…

Signal Processing · Electrical Eng. & Systems 2024-08-12 Chang-Sik Choi , Junhyeong Kim , Junil Choi