Results 81 to 90 of about 6,053 (218)

Enhanced Physical Layer Secret Key Generation via Beyond-Diagonal Reconfigurable Intelligent Surfaces in Multi-User MIMO Systems

open access: yesJournal of Engineering
Physical Layer Key Generation (PLKG) provides a promising approach for establishing secure cryptographic keys between legitimate parties. However, in static and quasi-static environments, the key generation rate is significantly limited due to the low ...
Mina Fadhil Hasan, Aqiel Niama Almamori
doaj   +1 more source

Exploring New Chemical Paths in Quantum AI: Preliminary Accomplishments and Future Perspectives

open access: yesAdvanced Quantum Technologies, Volume 9, Issue 2, February 2026.
Two new strategies derived from Chemical AI to promote the advancement of sustainable quantum technologies are presented and discussed. The first strategy relies on the chemical implementation of molecular fuzzy sets, which are quantum mixed states associated with chemical microheterogeneous systems. The second strategy relies on photochromic compounds
Pier Luigi Gentili
wiley   +1 more source

RIS partitioning and UAV selection for age-of-information optimization in RIS-assisted UAV communications

open access: yesICT Express
Reconfigurable intelligent surface (RIS) has been attracted great attention because it can enhance the capacity and coverage of wireless communication systems.
Juseoung Lee, Jaewoo So
doaj   +1 more source

Two-Timescale Transmission Design for Wireless Communication Systems Aided by Active RIS

open access: yes, 2022
This paper considers an active reconfigurable intelligent surface (RIS)-aided communication system, where an M-antenna base station (BS) transmits data symbols to a single-antenna user via an N-element active RIS.
Jin, Shi   +4 more
core  

MXene‐Based Electromagnetic Attenuation Materials in Microwave and Terahertz Bands

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT MXenes exhibit considerable potential for developing high‐performance electromagnetic (EM) shielding and absorption materials operating across microwave and terahertz frequencies, due to their tunable surface chemistry and exceptional charge carrier transport properties.
Guozheng Zhang   +9 more
wiley   +1 more source

Reconfigurable Intelligent Surface (RIS)-Assisted Entanglement Distribution in FSO Quantum Networks

open access: yesIEEE Transactions on Wireless Communications
Quantum networks (QNs) relying on free-space optical (FSO) quantum channels can support quantum applications in environments wherein establishing an optical fiber infrastructure is challenging and costly. However, FSO-based QNs require a clear line-of-sight (LoS) between users, which is challenging due to blockages and natural obstacles. In this paper,
Mahdi Chehimi   +6 more
openaire   +2 more sources

6G MIMO Spatio-Temporal Data Scattering for Reconfigurable Intelligent Surface (RIS) Performance

open access: yes, 2023
Orbital Angular Momentum (OAM), provides the new angular or mode dimension for wireless communications, offers an intriguing way for anti-jamming. The unprecedented demands for high- quality and seamless wireless services impose continuous challenges to existing cellular networks.
openaire   +1 more source

Optical STAR-RIS-Aided VLC Systems: RSMA Versus NOMA

open access: yesIEEE Open Journal of the Communications Society
A critical concern within the realm of visible light communications (VLC) pertains to enhancing system data rate, particularly in scenarios where the direct line-of-sight (LoS) connection is obstructed by obstacles.
Omar Maraqa   +2 more
doaj   +1 more source

Cascaded channel decoupling based solution for RIS regulation matrix

open access: yesIntelligent and Converged Networks
This article presents a pioneering solution to address the challenges of reconfigurable intelligent surface (RIS), employing a cascaded channel decoupling strategy.
Yajun Zhao
doaj   +1 more source

High SNR Analysis of RIS aided MIMO BC Channels

open access: yes, 2022
We analyze the influence of an reconfigurable intelligent surface (RIS) on the channel eigenvalues within a high signal-to-noise ratio (SNR) scenario. This allows to connect specific channel properties with the rank improvement capabilities of the RIS ...
Joham, Michael   +2 more
core  

Home - About - Disclaimer - Privacy