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The emerging technology of Reconfigurable Intelligent Surfaces (RISs) is provisioned as an enabler of smart wireless environments, offering a highly scalable, low-cost, hardware-efficient, and almost energy-neutral solution for dynamic…

The combination of multiple-input multiple-output (MIMO) systems and intelligent reflecting surfaces (IRSs) is foreseen as a critical enabler of beyond 5G (B5G) and 6G. In this work, two different approaches are considered for the joint…

信息论 · 计算机科学 2024-01-31 Dariel Pereira-Ruisánchez , Óscar Fresnedo , Darian Pérez-Adán , Luis Castedo

Recently, the reconfigurable intelligent surface (RIS), benefited from the breakthrough on the fabrication of programmable meta-material, has been speculated as one of the key enabling technologies for the future six generation (6G)…

信息论 · 计算机科学 2022-06-23 Chongwen Huang , Ronghong Mo , Chau Yuen

This article addresses the challenge of optimizing handover (HO) in next-generation wireless networks by integrating Reconfigurable Intelligent Surfaces (RIS), predicting received signal power, and utilizing learning-based decision-making.…

信号处理 · 电气工程与系统科学 2025-12-10 Ainna Yue Moreno-Locubiche , Josep Vidal , Olga Muñoz-Medina , Margarita Cabrera-Bean

Utilizing Deep Reinforcement Learning (DRL) for Reconfigurable Intelligent Surface (RIS) assisted wireless communication has been extensively researched. However, existing DRL methods either act as a simple optimizer or only solve problems…

系统与控制 · 电气工程与系统科学 2026-01-19 Meng-Qian Alexander Wu , Tzu-Hsien Sang , Luisa Schuhmacher , Ming-Jie Guo , Khodr Hammoud , Sofie Pollin

Owing to the unique advantages of low cost and controllability, reconfigurable intelligent surface (RIS) is a promising candidate to address the blockage issue in millimeter wave (mmWave) communication systems, consequently has captured…

信息论 · 计算机科学 2022-02-24 Yuqian Zhu , Zhu Bo , Ming Li , Yang Liu , Qian Liu , Zheng Chang , Yulin Hu

Stacked intelligent metasurfaces (SIMs) represent a novel signal processing paradigm that enables over-the-air processing of electromagnetic waves at the speed of light. Their multi-layer architecture exhibits customizable computational…

信息论 · 计算机科学 2025-04-01 Hao Liu , Jiancheng An , George C. Alexandropoulos , Derrick Wing Kwan Ng , Chau Yuen , Lu Gan

This paper investigates a smart spectrum-sharing framework for reconfigurable intelligent surface (RIS)-aided local high-quality wireless networks (LHQWNs) within a mobile network operator (MNO) ecosystem. Although RISs are often considered…

系统与控制 · 电气工程与系统科学 2026-03-27 Hamid Reza Hashempour , Mina Khadem , Eduard A. Jorswieck

Spatial Reuse (SR) has recently gained attention to maximize the performance of IEEE 802.11 Wireless Local Area Networks (WLANs). Decentralized mechanisms are expected to be key in the development of SR solutions for next-generation WLANs,…

网络与互联网体系结构 · 计算机科学 2018-12-17 Francesc Wilhelmi , Sergio Barrachina-Muñoz , Cristina Cano , Boris Bellalta , Anders Jonsson , Gergely Neu

This paper investigates reconfigurable intelligent surface (RIS)-assisted full-duplex multiple-input single-output wireless system, where the beamforming and RIS phase shifts are optimized to maximize the sum-rate for both single and…

信号处理 · 电气工程与系统科学 2022-08-17 Alice Faisal , Ibrahim Al-Nahhal , Octavia A. Dobre , Telex M. N. Ngatched

The performance of wireless communication systems is fundamentally constrained by random and uncontrollable wireless channels. Recently, reconfigurable intelligent surfaces (RIS) has emerged as a promising solution to enhance wireless…

信号处理 · 电气工程与系统科学 2023-12-29 Xiaohao Mo , Lin Gui , Kai Ying , Xichao Sang , Xiaqing Diao

Stacked intelligent metasurfaces (SIM) represents an advanced signal processing paradigm that enables over-the-air processing of electromagnetic waves at the speed of light. Its multi-layer structure exhibits customizable increased…

信号处理 · 电气工程与系统科学 2024-02-15 Hao Liu , Jiancheng An , Derrick Wing Kwan Ng , George C. Alexandropoulos , Lu Gan

Active Reconfigurable Intelligent Surfaces (RIS) are a promising technology for 6G wireless networks. This paper investigates a novel hybrid deep reinforcement learning (DRL) framework for resource allocation in a multi-user uplink system…

信号处理 · 电气工程与系统科学 2025-12-29 Mohamed Shalma , Engy Aly Maher , Ahmed El-Mahdy

This letter investigates the reconfigurable intelligent surface (RIS)-assisted multiple-input single-output (MISO) wireless system, where both half-duplex (HD) and full-duplex (FD) operating modes are considered together, for the first time…

信号处理 · 电气工程与系统科学 2021-10-12 Alice Faisal , Ibrahim Al-Nahhal , Octavia A. Dobre , Telex M. N. Ngatched

The plethora of wirelessly connected devices, whose deployment density is expected to largely increase in the upcoming sixth Generation (6G) of wireless networks, will naturally necessitate substantial advances in multiple access schemes.…

信息论 · 计算机科学 2024-10-29 Konstantinos D. Katsanos , Paolo Di Lorenzo , George C. Alexandropoulos

In this paper, we investigate a reconfigurable intelligent surface (RIS)-aided multiuser full-duplex secure communication system with hardware impairments at transceivers and RIS, where multiple eavesdroppers overhear the two-way…

信息论 · 计算机科学 2022-08-17 Zhangjie Peng , Zhibo Zhang , Lei Kong , Cunhua Pan , Li Li , Jiangzhou Wang

Beyond-diagonal reconfigurable intelligent surfaces (BD-RISs) are emerging as a transformative technology in wireless communications, enabling enhanced performance and quality of service (QoS) of wireless systems in harsh urban environments…

Intelligent omni-surface (IOS) is a promising technique to enhance the capacity of wireless networks, by reflecting and refracting the incident signal simultaneously. Traditional IOS configuration schemes, relying on all sub-channels'…

网络与互联网体系结构 · 计算机科学 2024-12-30 Xiaowen Ye , Xianghao Yu , Liqun Fu

Multi-Access Point Coordination (MAPC) and Artificial Intelligence and Machine Learning (AI/ML) are expected to be key features in future Wi-Fi, such as the forthcoming IEEE 802.11bn (Wi-Fi~8) and beyond. In this paper, we explore a…

网络与互联网体系结构 · 计算机科学 2025-03-06 Francesc Wilhelmi , Boris Bellalta , Szymon Szott , Katarzyna Kosek-Szott , Sergio Barrachina-Muñoz

With the increasing demand for spectrum efficiency and energy efficiency, reconfigurable intelligent surfaces (RISs) have attracted massive attention due to its low-cost and capability of controlling wireless environment. However, there is…

信息论 · 计算机科学 2024-10-28 Yangjing Wang , Xiao Li , Xinping Yi , Shi Jin
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