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Communication infrastructure is often severely disrupted in post-disaster areas, which interrupts communications and impedes rescue. Recently, the technology of reconfigurable intelligent surface (RIS)-equipped-UAV has been investigated as…

信息论 · 计算机科学 2024-06-18 Yinong Chen , Wenchi Cheng , Wei Zhang

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…

Reconfigurable intelligent surface (RIS) is an emerging technique employing metasurface to reflect the signal from the source node to the destination node without consuming any energy. Not only the spectral efficiency but also the energy…

信息论 · 计算机科学 2021-01-29 Qi Gu , Dan Wu , Xin Su , Jing Jin , Yifei Yuan , Jiangzhou Wang

Reconfigurable intelligent surface (RIS) is a promising technology for establishing spectral- and energy-efficient wireless networks. In this paper, we study RIS-enhanced orthogonal frequency division multiplexing (OFDM) communications,…

信息论 · 计算机科学 2021-10-19 Jiancheng An , Chao Xu , Derrick Wing Kwan Ng , Chau Yuen , Lu Gan , Lajos Hanzo

This paper investigates the achievable rate maximization problem of a downlink unmanned aerial vehicle (UAV)-enabled communication system aided by an intelligent omni-surface (IOS). Different from the state-of-the-art reconfigurable…

系统与控制 · 电气工程与系统科学 2022-07-13 Yifan Liu , Bin Duo , Qingqing Wu , Xiaojun Yuan , Yonghui Li

Recent development of the fifth-generation (5G) of cellular networks has led to their deployment worldwide. As part of the implementation, one of the challenges that must be addressed is the skip-zone problem, which occurs when objects…

信号处理 · 电气工程与系统科学 2022-11-30 Sylvester Aboagye , Alain R. Ndjiongue , Telex M. N. Ngatched , Octavia Dobre , H. Vincent Poor

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…

信息论 · 计算机科学 2021-02-02 RuiTianYi Lu

Reconfigurable intelligent surface (RIS)-aided vehicle-to-everything (V2X) communication has emerged as a crucial solution for providing reliable data services to vehicles on the road. However, in delay-sensitive or high-mobility…

信号处理 · 电气工程与系统科学 2025-03-03 Shuaijun Li , Jie Tang , Beixiong Zheng , Xiaokai Song , Guixin Pan , Kai-Kit Wong

Reconfigurable Intelligent Surfaces (RISs) constitute a promising emerging technology that enables wireless systems to control the propagation environment to enhance diverse communication objectives. To mitigate double-fading attenuation in…

信号处理 · 电气工程与系统科学 2025-04-01 Panagiotis Gavriilidis , Deepak Mishra , Besma Smida , Ertugrul Basar , Chau Yuen , George C. Alexandropoulos

Reconfigurable Intelligent Surface (RIS) is a promising solution to reconfigure the wireless environment in a controllable way. To compensate for the double-fading attenuation in the RIS-aided link, a large number of passive reflecting…

信息论 · 计算机科学 2021-03-02 Ruizhe Long , Ying-Chang Liang , Yiyang Pei , Erik G. Larsson

This paper investigates the interference nulling capability of reconfigurable intelligent surface (RIS) in a multiuser environment where multiple single-antenna transceivers communicate simultaneously in a shared spectrum. From a…

信息论 · 计算机科学 2022-01-31 Tao Jiang , Wei Yu

Active reconfigurable intelligent surfaces (RISs) are a novel and promising technology that allows controlling the radio propagation environment while compensating for the product path loss along the RIS-assisted path. In this letter, we…

信号处理 · 电气工程与系统科学 2022-05-16 Mohamed Rihan , Emanuele Grossi , Luca Venturino , Stefano Buzzi

This paper studies the physical layer security (PLS) of a vehicular network employing a reconfigurable intelligent surface (RIS). RIS technologies are emerging as an important paradigm for the realisation of smart radio environments, where…

信号处理 · 电气工程与系统科学 2019-12-30 Abubakar U. Makarfi , Khaled M. Rabie , Omprakash Kaiwartya , Xingwang Li , Rupak Kharel

In this work, we showcase the potential benefit of employing optical intelligent reflecting surfaces (O-IRS) for improving safety message dissemination for vehicular visible light communication (V-VLC) systems particularly at the road…

系统与控制 · 电气工程与系统科学 2022-11-22 Tathagat Pal , Gurinder Singh , Vivek Ashok Bohara , Anand Srivastava

Reconfigurable intelligent surface (RIS)-empowered communication stands out as a solid candidate for future wireless networks due to its flexibility, ease of deployment, and attractive advantages to control the wireless propagation…

信息论 · 计算机科学 2023-04-13 Ertugrul Basar

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

Unmanned Aerial Vehicles (UAVs) play a pivotal role in the emerging low-altitude economy. However, they face significant challenges in achieving reliable network coverage during transit operations. This paper provides an in-depth…

信息论 · 计算机科学 2026-01-26 Yajun Zhao , Mengnan Jian , Yifei Yuan

With the rapid development of Internet of Things (IoT), massive machine-type communication has become a promising application scenario, where a large number of devices transmit sporadically to a base station (BS). Reconfigurable intelligent…

信息论 · 计算机科学 2021-01-26 Shuhao Xia , Yuanming Shi , Yong Zhou , Xiaojun Yuan

Rapid signal fluctuations due to blockage effects cause excessive handovers (HOs) and degrade mobility performance. By reconfiguring line-of-sight (LoS) Links through passive reflections, intelligent reflective surface (IRS) has the…

信号处理 · 电气工程与系统科学 2025-01-28 Haoyan Wei , Hongtao Zhang

Semantic communication, which focuses on conveying the meaning of information rather than exact bit reconstruction, has gained considerable attention in recent years. Meanwhile, reconfigurable intelligent surface (RIS) is a promising…

信息论 · 计算机科学 2023-06-30 Jiajia Shi , Tse-Tin Chan , Haoyuan Pan , Tat-Ming Lok