Results 41 to 50 of about 337 (177)

Advanced Fade Mitigation Techniques for Q/V Band SATCOM Systems

International Journal of Satellite Communications and Networking, Volume 44, Issue 3, Page 288-296, May/June 2026.
ABSTRACT Adaptive fade mitigation techniques, such as smart gateway diversity (SGD), are essential in addressing atmospheric fading affecting the operation of high throughput and very high throughput satellite systems at Ka‐band and beyond. Specifically, the Q/V‐band, offering up to 5 GHz of available spectrum, is very attractive for future high data ...
Marianna Biscarini, Arijit De, Lorenzo Luini, Carlo Riva, Antonio Martellucci, Roberto Nebuloni   +5 more
wiley   +1 more source

Four-channel GaAs multifunction chips with bottom RF interface for Ka-band SATCOM antennas

ETRI Journal
Receiver and transmitter monolithic microwave integrated circuit (MMIC) multifunction chips (MFCs) for active phased-array antennas for Ka-band satellite communication (SATCOM) terminals have been designed and fabricated using a 0.15-μm GaAs ...
Jin-Cheol Jeong, Junhan Lim, Dong-Pil Chang   +2 more
doaj   +1 more source

A Systems Engineering Methodology for System of Autonomous Systems: Architecture and Integration

Systems Engineering, Volume 29, Issue 2, Page 169-194, March 2026.
ABSTRACT Artificial intelligence and machine learning (AI/ML) rapidly transform systems by providing autonomous capabilities. This new class of systems can become a constituent system in a system of systems (SoS) to evolve it into a system of autonomous systems (SoAS).
Mohammadreza Torkjazi, Ali K. Raz
wiley   +1 more source

Evaluation of multi‐user multiple‐input multiple‐output digital beamforming algorithms in B5G/6G low Earth orbit satellite systems

International Journal of Satellite Communications and Networking, Volume 44, Issue 1, Page 17-33, January/February 2026.
In this paper, we investigate the application of signal‐to‐leakage‐plus‐noise ratio (SLNR) beamforming to low Earth orbit non‐terrestrial networks. The SLNR criterion aims at maximizing the received desired signal power for each user while minimizing the overall interference power caused by each user to all other co‐channel receivers. We show that such
M. Rabih Dakkak, Daniel Gaetano Riviello, Alessandro Guidotti, Alessandro Vanelli‐Coralli   +3 more
wiley   +1 more source

High-throughput SatCom-on-the-move antennas: Technical overview and state-of-the-art

Digital Communications and Networks
With the rapid development of satellite communications, satellite antennas attract growing interest, especially the high-throughput SatCom-on-the-move antenna for providing high-speed connectivity in a mobile environment.
Yuanzhi He, Fan Yang, Guodong Han, Yuanyuan Li   +3 more
doaj   +1 more source

Space Weather and Low‐Altitude Drone Economy

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Unmanned Aerial Vehicles (UAVs) are becoming integral to the emerging low‐altitude economy, operating primarily below 3,000 m for applications such as logistics, inspection, precision agriculture, and urban air mobility. The safe and reliable operation of UAVs depends critically on communication, navigation, and surveillance (CNS) systems ...
Dabin Xue, Qing‐He Zhang, Xueshang Feng, Chi Wang   +3 more
wiley   +1 more source

Spatial Filtering for Underlay Cognitive SatComs [PDF]

, 2013
Herein, we study an underlay beamforming technique for the coexistence scenario of satellite and terrestrial networks with the satellite return link as primary and the terrestrial uplink as secondary. Since satellite terminals are unique in that they always point towards the geostationary satellite, interference received by the terrestrial Base Station
Shree Krishna Sharma, Symeon Chatzinotas, Björn E. Ottersten   +2 more
openaire   +1 more source

Transformer‐Enhanced Multi‐Satellite IRS Coordination for Next‐Generation LEO Communications

IET Communications, Volume 20, Issue 1, January/December 2026.
This paper introduces a novel transformer‐enhanced framework for multi‐satellite intelligent refelecting surfaces (IRS) coordination that addresses these fundamental limitations through physics‐informed neural architectures incorporating orbital dynamics modelling, multi‐head self‐attention mechanisms for temporal dependency capture across rapidly ...
Ali Hussein Radhi, Mahmood Mohassel Feghhi, Mohammad Ali Balafar   +2 more
wiley   +1 more source

Performance Analysis of Reconfigurable Intelligent Surface (RIS)-Assisted Satellite Communications: Passive Beamforming and Outage Probability

Mathematics
Reconfigurable intelligent surfaces (RISs), which consist of numerous passive reflecting elements, have emerged as a prominent technology to enhance energy and spectral efficiency for future wireless networks.
Minchae Jung, Hyukmin Son
doaj   +1 more source

Design and Experimental Validation of Pattern and Frequency Reconfigurable Central Plasma Antenna Array

IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
The study presents the design and development of a plasma‐based antenna array system for the UHF band. The system features an omnidirectional plasma antenna as its active radiator, a novel approach that has not been previously explored. Surrounding plasma reflectors form a reconfigurable array around the monopole plasma antenna for beam shaping and ...
Manisha Jha, Nisha Panghal, A. K. Pandey, Unnati Patel, Rajesh Kumar, Surya K. Pathak   +5 more
wiley   +1 more source