Results 51 to 60 of about 1,169 (175)

A Joint Channel Modeling, Parameter Estimation and Geometry‐Based Indoor Localization for 5G Systems

open access: yesTransactions on Emerging Telecommunications Technologies, Volume 37, Issue 6, June 2026.
We propose an end‐to‐end method to accurately localize mobile stations in indoor scenarios, such as those found in Industry 4.0. To this end, we jointly perform wireless channel modeling considering mmWave and MIMO technologies, parameter estimation in 3D, and simple and fine‐grained geometry‐based localization.
Paulo Francisco da Conceição   +2 more
wiley   +1 more source

Fairness Optimization for VLC Systems With Liquid Crystal-Based RIS-Enabled Transmitters

open access: yesIEEE Photonics Journal
The application of liquid crystal (LC)-based reconfigurable intelligent surface (RIS)-assisted transmitters in visible light communication (VLC) systems can guide and amplify the light emitted by light emitting diodes (LEDs).
Xin-Yu Zhang, Jian Zhang, Qi Wu
doaj   +1 more source

Plug-In RIS: A Novel Approach to Fully Passive Reconfigurable Intelligent Surfaces

open access: yesIEEE Transactions on Wireless Communications
This paper presents a promising design concept for reconfigurable intelligent surfaces (RISs), named plug-in RIS, wherein the RIS is plugged into an appropriate position in the environment, adjusted once according to the location of both base station and blocked region, and operates with fixed beams to enhance the system performance. The plug-in RIS is
Mahmoud Raeisi   +4 more
openaire   +3 more sources

An All‐Optical Driven Bio‐Photovoltaic Interface for Active Control of Live Cells

open access: yesAdvanced Functional Materials, Volume 36, Issue 39, 14 May 2026.
Bio‐photovoltaic Interface (BIO‐PV‐I) for live cell manipulation is presented. BIO‐PV‐I can be activated non‐invasively and remotely to control the spatial motility, adhesion, and morphology of cells adhering to it. BIO‐PV‐I uses a patterned light‐induced electric potential in iron‐doped lithium niobate crystals whose light‐driven and reversible nature,
Lisa Miccio   +8 more
wiley   +1 more source

RIS-assisted UAV communications: A review of system models, frameworks and outage performance

open access: yesICT Express
Integration of Reconfigurable Intelligent Surfaces (RIS) with Unmanned Aerial Vehicles (UAVs) generates a revolutionary paradigm for next-generation wireless communications, particularly in IoT and 6G applications.
Saddaf Rubab   +5 more
doaj   +1 more source

Integrated sensing and communication in reconfigurable intelligent surface systems: status, design and outlook

open access: yesDianxin kexue, 2022
Integrated sensing and communication (ISAC) is the dominant trend of the sixth generation mobile communication networks (6G).The introduction of ISAC into the reconfigurable intelligent surface (RIS) system can expand the system coverage, improve both ...
Xiaoling HU   +3 more
doaj   +2 more sources

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

Quantum Protocol Architectures and Secure Control Frameworks For 7G+ Networks: Standards, Synchronization, Use Cases, and Challenges

open access: yesAdvanced Quantum Technologies, Volume 9, Issue 5, May 2026.
ABSTRACT Quantum‐native communication systems are reshaping secure, programmable, and coherence‐aware networking beyond the classical paradigm. As intelligent physical infrastructures, ranging from unmanned aerial vehicle swarms to satellite Quantum Key Distribution (QKD) platforms, demand trust, synchronization, and ultra‐reliability, conventional ...
Shakil Ahmed   +2 more
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

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

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