Results 191 to 200 of about 29,649 (264)

Digital Twin‐Based Optimization of Service Availability in LEO Mega Constellations Considering Handover Delays in Open RAN

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram, Luca Feltrin, Mustafa Ozger, Cicek Cavdar   +3 more
wiley   +1 more source

Fetal Adrenal Gland Ultrasound Parameters in Pregnancies with Fetal Growth Restriction Defined by Delphi Criteria: A Prospective Single-Center Case-Control Study. [PDF]

J Clin Med
Özalp E, Akbulut ÖV, Sucu S, Kurt DS, Çelen Ş, Yücel KY.   +5 more
europepmc   +1 more source

Preprocessing Procedure for Propagation Measurements on MEO Satellite Links

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper presents a software tool designed for preprocessing data from an experimental campaign aimed at characterizing the tropospheric propagation channel using Medium Earth Orbit (MEO) satellites. The collected data provide critical insights into the channel in scenarios involving continuous variations in azimuth and elevation, along with
Marlene Brás, Susana Mota, Armando Rocha   +2 more
wiley   +1 more source

Tracing Three Decades of Low Earth Orbit Satellite Communication Development: A Bibliometric and Main Path Analysis of Network Architectures, Protocol Evolution, and Emerging Intelligent Services

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Low Earth Orbit (LEO) satellite communication systems have evolved into a critical component of global broadband networks, enabling wide‐area connectivity, IoT services, and intelligent multilayer satellite–terrestrial integration. Despite rapid advancements in constellation deployment, routing mechanisms, resource management, and LEO–5G/6G ...
Wei‐Hao Su, Ya‐Chen Chuang, Long‐Sheng Chen   +2 more
wiley   +1 more source

Wake-Independent Velocity Estimation and Motion Compensation for SAR Moving Target Based on Time-Frequency Analysis. [PDF]

Sensors (Basel)
Wen C, Wang Y, Zhang Y, Zheng H, Sun D, Li Q, Chen F.   +6 more
europepmc   +1 more source

Integrated LEO Constellation and In‐Cabin Distribution System for Continuous Aircraft 5G Connectivity

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency (>$$ > $$ 500 ms) and inadequate coverage at high ...
Raúl Parada, Victor Monzon Baeza, Carlos Horcajo Fernández de Gamboa, Rocío Serrano Camacho, Carlos Monzo   +4 more
wiley   +1 more source

Cell Complexity Impact on Railway 5G Performance: Measurements Along Tallinn-Tartu Corridor. [PDF]

Sensors (Basel)
Pilvik R, Jairus T, Sadam A, Kõrbe Kaare K.   +3 more
europepmc   +1 more source

Low‐Complexity Hybrid Beamforming for LEO Satellites: Beam Update Rate Analysis and Advanced Adaptive Precoding

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Low Earth Orbit (LEO) satellite constellations offer unprecedented opportunities for global broadband connectivity but pose significant beamforming challenges due to rapid platform motion and stringent onboard hardware constraints. Fully digital architectures, while optimal in theory, remain impractical for satellite payloads, motivating ...
Mohammad Momani, Thomas Delamotte, Andreas Knopp   +2 more
wiley   +1 more source

Retinal arteriovenous crossings as spatiotemporal stress fields: a quantitative Doppler OCT flowmetry study. [PDF]

Sci Rep
Akiba M, Minamide K, Najac MJ, Duran LM, Haq A, Chui TYP, Rosen RB.   +6 more
europepmc   +1 more source

Addressing Key Limitations of Diastolic Function Assessment in Mouse Echocardiography by Enabling Robust Retrospective Analysis From a Standard Imaging View. [PDF]

Acta Physiol (Oxf)
Marterstock M, Schauer A, Maslakova A, Opitz A, Dieterich P, Speier S, Kämmerer S, Mirtschink P, Kopaliani I, Deussen A.   +9 more
europepmc   +1 more source