Results 141 to 150 of about 33,840 (257)

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

Shape-optimized metasurface beamformer for high-efficiency full-duplex optical wireless communications across an ultra-wide field-of-view. [PDF]

Nat Commun
Yuan Z, Chen J, Wang Y, Wu Y, Li M, Chen S, Chen C, You X, Zhang Z.   +8 more
europepmc   +1 more source

Superdirective Wideband Array of Circular Monopoles with Loaded Patches for Wireless Communications. [PDF]

Sensors (Basel), 2023
Lu P, Liu Z, Lei E, Huang K, Song C.
europepmc   +1 more source

Insights From the Alphasat Aldo Paraboni Experiment at Tito Scalo and Spino d'Adda: Characterizing Scintillation and Rain Attenuation at Ka‐ and Q‐Band Frequencies

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT We present experimental results on the relationship between rain attenuation and simultaneous scintillation during rain events, based on beacon signal measurements at 19.7 (Ka‐band) and 39.4 GHz (Q‐band) from the geosynchronous Alphasat satellite (25° E), received at two Italian ground stations, Spino d'Adda (42.1° slant path) and Tito Scalo ...
Miles Turner, Alef Comisso, Carlo Riva, Lorenzo Luini, Giuseppe Codispoti, Giorgia Parca   +5 more
wiley   +1 more source

Recent Advances in Metasurfaces: From THz Biosensing to Microwave Wireless Communications. [PDF]

Research (Wash D C)
Wang Y, Zhang X, Wang Y, Liu Y, Li J, Chen X, Cui Z, Burokur SN, Zhang J, Zhao X, Zhang K, You Z.   +11 more
europepmc   +1 more source

Comparison of different New Radio (NR) waveforms for wireless communications. [PDF]

PLoS One, 2023
Baki AKM.
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

Underwater Wireless Communications. [PDF]

Sensors (Basel)
Esmaiel H, Sun H.
europepmc   +1 more source

A Roadmap for Gigabit to Terabit Optical Wireless Communications Receivers. [PDF]

Sensors (Basel), 2023
Matthews W, Collins S.
europepmc   +1 more source

Directive Antenna Clutter Loss in Slant Paths

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper investigates the development of a clutter loss model specifically for slant paths involving directive antennas. Conventionally, clutter loss is characterized by using isotropic antennas to facilitate standard link budget calculations via single antenna gain values.
Fernando Pérez Fontán, Vicente Pastoriza‐Santos, Fernando Machado Domı́nguez, Thomas Prechtl, Pavel Pechac   +4 more
wiley   +1 more source