Results 31 to 40 of about 13,960 (190)

Demystifying the Power Scaling Law of Intelligent Reflecting Surfaces and Metasurfaces [PDF]

open access: yes, 2019
Intelligent reflecting surfaces (IRSs) have recently attracted the attention of communication theorists as a means to control the wireless propagation channel. It has been shown that the signal-to-noise ratio (SNR) of a single-user IRS-aided transmission
Bjornson E., Sanguinetti L.
core   +3 more sources

Cell-Free MIMO Systems Powered by Intelligent Reflecting Surfaces [PDF]

open access: yesIEEE Communications Letters, 2022
Cell-free massive multiple-input multiple-output (MIMO) and intelligent reflecting surface (IRS) are considered as the prospective multiple antenna technologies for beyond the fifth-generation (5G) networks.
Taegyun Noh, Junil Choi
semanticscholar   +1 more source

Development of a Dual-Polarized Direction-Variable Liquid-Crystal Meta-Surface Reflector for Intelligent Reflecting Surface

open access: yesIEEE Access, 2023
Intelligent reflecting surfaces (IRSs) have been attracting attention as a solution to coverage hole problems in millimeter-wave communication areas. They are considered to be one of the key technologies of next-generation mobile communication systems ...
Hiromi Matsuno   +7 more
doaj   +1 more source

Exact Coverage Analysis of Intelligent Reflecting Surfaces With Nakagami-M Channels [PDF]

open access: yesIEEE Transactions on Vehicular Technology, 2021
Intelligent Reflecting Surfaces (IRS) are a promising solution to enhance the coverage of future wireless networks by tuning low-cost passive reflecting elements (referred to as metasurfaces), thereby constructing a favorable wireless propagation ...
Hazem M. S. Ibrahim   +2 more
semanticscholar   +1 more source

Enabling Secure Wireless Communications via Intelligent Reflecting Surfaces [PDF]

open access: yesGlobal Communications Conference, 2019
In this paper, we propose to utilize intelligent reflecting surfaces (IRSs) for enhancing the physical layer security of wireless communications systems.
Xianghao Yu, Dongfang Xu, R. Schober
semanticscholar   +1 more source

Deep Reinforcement Learning for Intelligent Reflecting Surfaces: Towards Standalone Operation [PDF]

open access: yesInternational Workshop on Signal Processing Advances in Wireless Communications, 2020
The promising coverage and spectral efficiency gains of intelligent reflecting surfaces (IRSs) are attracting increasing interest. To adopt these surfaces in practice, however, several challenges need to be addressed.
A. Taha   +3 more
semanticscholar   +1 more source

Intelligent Reflecting Surfaces for Enhanced Physical Layer Security in NOMA VLC Systems [PDF]

open access: yesICC 2023 - IEEE International Conference on Communications, 2022
The rise of intelligent reflecting surfaces (IRSs) is opening the door for unprecedented capabilities in visible light communication (VLC) systems.
Hanaa Abumarshoud   +4 more
semanticscholar   +1 more source

Capacity Improvement for Intelligent Reflecting Surface-Assisted Wireless Systems With a Small Portion of Active Elements

open access: yesIEEE Access, 2022
In this study, the use of intelligent reflecting surfaces (IRSs) to improve the capacity of a multi-user multiple-input-single-output downlink system is investigated.
Jung-Chieh Chen
doaj   +1 more source

Intelligent Reflecting Surfaces Assisted UAV Communications for Massive Networks: Current Trends, Challenges, and Research Directions

open access: yesItalian National Conference on Sensors, 2022
An intelligent reflecting surface (IRS) can intelligently configure wavefronts such as amplitude, frequency, phase, and even polarization through passive reflections and without requiring any radio frequency (RF) chains.
Syed Agha Hassnain Mohsan   +4 more
semanticscholar   +1 more source

Physical Layer Security Enhancement via Intelligent Omni-Surfaces and UAV-Friendly Jamming

open access: yesIEEE Access, 2023
Intelligent reflecting surfaces (IRS) are considered one of the prominent technologies to be adopted in 6G and beyond networks. However, one of the main IRS limitations is restricting the communication to the reflective dimension, which means that users ...
A. M. Benaya   +3 more
doaj   +1 more source

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