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The design and optimization of wireless networks have mostly been based on strong mathematical and theoretical modeling. Nonetheless, as novel applications emerge in the era of 5G and beyond, unprecedented levels of complexity will be…

信息论 · 计算机科学 2023-07-11 Rawan Alkurd , Ibrahim Abualhaol , Halim Yanikomeroglu

The pervasive nature of wireless telecommunication has made it the foundation for mainstream technologies like automation, smart vehicles, virtual reality, and unmanned aerial vehicles. As these technologies experience widespread adoption…

A wireless communication system is studied that operates in the presence of multiple reconfigurable intelligent surfaces (RISs). In particular, a multi-operator environment is considered where each operator utilizes an RIS to enhance its…

By reconfiguring the propagation environment of electromagnetic waves artificially, reconfigurable intelligent surfaces (RISs) have been regarded as a promising and revolutionary hardware technology to improve the energy and spectrum…

信号处理 · 电气工程与系统科学 2020-12-08 Huiyuan Yang , Xiaojun Yuan , Jun Fang , Ying-Chang Liang

This study delves into the innovative landscape of metasurfaces, with a particular focus on their role in achieving EM illusion (EMI) a facet of paramount significance. The control of EM waves assumes a pivotal role in mitigating issues…

信号处理 · 电气工程与系统科学 2024-04-19 Hamidreza Taghvaee , Mohsen Khalily , Gabriele Gradoni , Rahim Tafazolli

The requirements of vehicular communications grow with increasing level of automated driving and future applications of intelligent transportation systems (ITS). Beside the ever-increasing need for high capacity radio links, reliability and…

网络与互联网体系结构 · 计算机科学 2021-08-31 Karsten Heimann , Benjamin Sliwa , Manuel Patchou , Christian Wietfeld

Sixth generation (6G) mobile networks may include new passive technologies, such as ambient backscatter communication or the use of reconfigurable intelligent surfaces, to avoid the emission of waves and the corresponding energy…

信号处理 · 电气工程与系统科学 2021-04-09 Romain Fara , Dinh-Thuy Phan-Huy , Philippe Ratajczak , Abdelwaheb Ourir , Marco Di Renzo , Julien de Rosny

As the wireless research community moves toward shaping the vision of sixth-generation (6G) networks, reconfigurable intelligent surfaces (RIS) have emerged as a promising technology for controlling the propagation environment. Although RIS…

信号处理 · 电气工程与系统科学 2025-06-25 Prasetyo Putranto , Anis Amazigh Hamza , Sameh Mabrouki , Nasrullah Armi , Iyad Dayoub

Reconfigurable intelligent surfaces (RISs) are artificial planar structures able to offer a unique way of manipulating propagated wireless signals. Commonly composed of a number of reconfigurable passive cell components and basic electronic…

Cognitive Radio (CR) is a paradigm shift in wireless communications to resolve the spectrum scarcity issue with the ability to self-organize, self-plan and self-regulate. On the other hand, wireless devices that can learn from their…

信号处理 · 电气工程与系统科学 2022-11-24 Ali Krayani

Owing to the recent advancements of meta-materials and meta-surfaces, the concept of reconfigurable intelligent surface (RIS) has been embraced to meet the spectral- and energy-efficient, and yet cost-effective solutions for the…

系统与控制 · 电气工程与系统科学 2022-11-02 Yulan Gao , Yue Xiao , Xianfu Lei , Qiaonan Zhu , Dusit Niyato , Kai-Kit Wong , Pingzhi Fan , Rose Qingyang Hu

Antenna array technology enables directional transmission and reception of wireless signals, for communications, localization, and sensing purposes. The signal processing algorithms that underpin this technology began to be developed…

信号处理 · 电气工程与系统科学 2022-03-09 Emil Björnson , Henk Wymeersch , Bho Matthiesen , Petar Popovski , Luca Sanguinetti , Elisabeth de Carvalho

Reconfigurable intelligent surface (RIS) has been recognized as an essential enabling technique for the sixth-generation (6G) mobile communication network. Specifically, an RIS is comprised of a large number of small and low-cost reflecting…

Given the proliferation of wireless sensors and smart mobile devices, an explosive escalation of the volume of data is anticipated. However, restricted by their limited physical sizes and low manufacturing costs, these wireless devices tend…

信号处理 · 电气工程与系统科学 2021-08-23 Tong Bai , Cunhua Pan , Chao Han , Lajos Hanzo

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…

信号处理 · 电气工程与系统科学 2022-03-15 Moustafa Rahal , Benoît Denis , Kamran Keykhosravi , Furkan Keskin , Bernard Uguen , George C. Alexandropoulos , Henk Wymeersch

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

Artificial intelligence (AI) is envisioned to play a key role in future wireless technologies, with deep neural networks (DNNs) enabling digital receivers to learn to operate in challenging communication scenarios. However, wireless…

信息论 · 计算机科学 2023-05-15 Tomer Raviv , Sangwoo Park , Osvaldo Simeone , Yonina C. Eldar , Nir Shlezinger

Metasurfaces (MTSs) are increasingly emerging as enabling technologies to meet the demands for multi-functional, small form-factor, efficient, reconfigurable, tunable, and low-cost radio-frequency (RF) components because of their ability to…

应用物理 · 物理学 2022-11-03 Kumar Vijay Mishra , Ahmet M. Elbir , Amir I. Zaghloul

Massive access for Internet-of-Things (IoT) in beyond 5G networks represents a daunting challenge for conventional bandwidth-limited technologies. Millimeter-wave technologies (mmWave)---which provide large chunks of bandwidth at the cost…

信息论 · 计算机科学 2020-07-21 Mursia , Placido , Sciancalepore , Vincenzo , Garcia-Saavedra , Andres , Cottatellucci , Laura , Costa-Perez , Xavier , Gesbert , David

Reconfigurable intelligent surfaces (RISs) or intelligent reflecting surfaces (IRSs), are regarded as one of the most promising and revolutionizing techniques for enhancing the spectrum and/or energy efficiency of wireless systems. These…