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This paper presents the first machine learning based real-world demonstration for radar-aided beam prediction in a practical vehicular communication scenario. Leveraging radar sensory data at the communication terminals provides important…

信号处理 · 电气工程与系统科学 2021-11-19 Umut Demirhan , Ahmed Alkhateeb

Terahertz (THz) communications have been envisioned as a promising enabler to provide ultra-high data transmission for sixth generation (6G) wireless networks. To tackle the blockage vulnerability brought by severe attenuation and poor…

信息论 · 计算机科学 2022-11-23 Xinying Ma , Zhi Chen , Chongwen Huang

The massive number of antennas in extremely large aperture array (ELAA) systems shifts the propagation regime of signals in internet of things (IoT) communication systems towards near-field spherical wave propagation. We propose a…

信号处理 · 电气工程与系统科学 2025-04-18 Quan Zhou , Jingjing Zhao , Kaiquan Cai , Yanbo Zhu

Quantum networks (QNs) supported by terahertz (THz) wireless links present a transformative alternative to fiber-based infrastructures, particularly in mobile and infrastructure-scarce environments. However, signal attenuation, molecular…

量子物理 · 物理学 2025-10-29 Shakil Ahmed

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…

信息论 · 计算机科学 2024-03-20 Hyuckjin Choi , Ly V. Nguyen , Junil Choi , A. Lee Swindlehurst

Reconfigurable intelligent surface (RIS) have been cast as a promising alternative to alleviate blockage vulnerability and enhance coverage capability for terahertz (THz) communications. Owing to large-scale array elements at transceivers…

信息论 · 计算机科学 2024-09-04 Xinying Ma , Gong Chen , Xiaofei Wang

This paper addresses the deployment of a drone equipped with a reconfigurable intelligent surface (RIS), creating a drone relay station (DRS) to enhance the connectivity of vehicle-to-vehicle (V2V) pairs on the ground. The trajectory of the…

网络与互联网体系结构 · 计算机科学 2025-03-27 Salim Janji

The terahertz (THz) frequency band has recently attracted considerable attention in wireless communications as potential candidate for providing the necessary high bandwidth for demanding applications. With increasing frequency, however,…

信号处理 · 电气工程与系统科学 2022-12-13 Evangelos N. Papasotiriou , Sotiris Droulias , Angeliki Alexiou

The dense and distributed deployment of sub-THz radio units (RUs) alongside sub-10 GHz access point (AP) is a promising approach to provide high data rate and reliable coverage for future 6G applications. However, beam search or RU…

信号处理 · 电气工程与系统科学 2025-07-15 Nishant Gupta , Muris Sarajlic , Erik G. Larsson

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

The reconfigurable intelligent surface (RIS) technology shows great potential in sixth-generation (6G) terrestrial and non-terrestrial networks (NTNs) since it can effectively change wireless settings to improve connectivity. Extensive…

信号处理 · 电气工程与系统科学 2025-02-25 Wali Ullah Khan , Eva Lagunas , Asad Mahmood , Muhammad Asif , Manzoor Ahmed , Symeon Chatzinotas

Large multiple antenna arrays coupled with accurate beamforming are essential in terahertz (THz) communications to ensure link reliability. However, as the number of antennas increases, beam alignment (focusing) and beam tracking in mobile…

系统与控制 · 电气工程与系统科学 2025-11-04 Irched Chafaa , E. Veronica Belmega , Giacomo Bacci

Reconfigurable intelligent surface (RIS)-assisted terahertz (THz) communication is emerging as a key technology to support ultra-high data rates in future sixth-generation networks. However, the acquisition of accurate channel state…

信息论 · 计算机科学 2025-06-17 Xin Su , Ruisi He , Peng Zhang , Bo Ai , Yong Niu , Gongpu Wang

Communication at terahertz (THz) frequency bands is a promising solution for achieving extremely high data rates in next-generation wireless networks. While the THz communication is conventionally envisioned for short-range wireless…

信息论 · 计算机科学 2021-02-11 Arian Ahmadi , Omid Semiari

The advent of reconfigurable intelligent surfaces(RISs) brings along significant improvements for wireless technology on the verge of beyond-fifth-generation networks (B5G).The proven flexibility in influencing the propagation environment…

网络与互联网体系结构 · 计算机科学 2023-10-17 Guillermo Encinas-Lago , Antonio Albanese , Vincenzo Sciancalepore , Marco Di Renzo , Xavier Costa-Pérez

This paper proposes a novel semi-self sensing hybrid reconfigurable intelligent surface (SS-HRIS) in terahertz (THz) bands, where the RIS is equipped with reflecting elements divided between passive and active elements in addition to…

信号处理 · 电气工程与系统科学 2025-01-22 Sara Farrag Mobarak , Tingnan Bao , Melike Erol-Kantarci

In this paper, we investigate the potential of reconfigurable intelligent surfaces (RISs) in facilitating passive/device-free three-dimensional (3D) drone localization within existing cellular infrastructure operating at millimeter-wave…

信号处理 · 电气工程与系统科学 2025-01-03 Jiguang He , Charles Vanwynsberghe , Hui Chen , Chongwen Huang , Aymen Fakhreddine

We propose a holographic version of a reconfigurable intelligent surface (RIS) and investigate its application to terahertz (THz) massive multiple-input multiple-output systems. Capitalizing on the miniaturization of THz electronic…

信息论 · 计算机科学 2021-03-22 Ziwei Wan , Zhen Gao , Feifei Gao , Marco Di Renzo , Mohamed-Slim Alouini

The revolution in the low Earth orbit (LEO) satellite networks will bring changes on their communication models and a shift from the classical bent-pipe architectures to more sophisticated networking platforms. Thanks to technological…

信息论 · 计算机科学 2022-11-22 Kürşat Tekbıyık , Güneş Karabulut Kurt , Ali Rıza Ekti , Halim Yanikomeroglu

Reconfigurable intelligent surfaces (RISs) are expected to make future 6G networks more connected and resilient against node failures, due to their ability to introduce controllable phase-shifts onto impinging electromagnetic waves and…

信息论 · 计算机科学 2023-08-22 Mohammed S. Al-Abiad , Mohammad Javad-Kalbasi , Shahrokh Valaee