Results 61 to 70 of about 18,596 (191)

Satellite-based entanglement distribution and quantum teleportation with continuous variables

Communications Physics
Advances in satellite quantum communications aim at reshaping the global telecommunication network by increasing the security of the transferred information.
Tasio Gonzalez-Raya, Stefano Pirandola, Mikel Sanz   +2 more
doaj   +1 more source

Remotely Sensed Surface Water Storage Shows Distinct Patterns From SWAT‐Simulated Data

Water Resources Research, Volume 62, Issue 6, June 2026.
Abstract Quantifying and projecting the downstream benefits of water stored in lakes and wetlands (SWstorage) requires watershed hydrologic models, which often parameterize surface water storage in topographic depressions using static digital elevation model (DEM) data.
W. Dolan, M. K. Vanderhoof, J. R. Christensen, H. E. Golden, C. R. Lane, A. Rajib, W. Keenan, Q. Zheng, A. Khare   +8 more
wiley   +1 more source

Linear Precoding performance analysis in a Broadband satellite system with a 2-color dual-polarization reuse scheme [PDF]

, 2013
The potential of Joint Multiuser Processing in multi-beam satellite systems is assessed in this paper and proved to be a potential attractive alternative to current systems.
Vidal, Oriol, Inigo, Patricia, Lacan, Jérôme, Radzik, José, Alberty, Eric   +4 more
core  

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

Advanced 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, Ibrahim Almazyad, Ashfaq Khokhar   +2 more
wiley   +1 more source

DRL-Based Secure Beamforming for Hybrid-RIS Aided Satellite Downlink Communications

, 2023
In this paper, a secure multiuser MISO satellite downlink communication system is considered with the assist of a hybrid reconfigurable intelligent surface (RIS).
Xiang, W, Ngo, QT, Mahmood, A, Phan, KT
core   +1 more source

Location‐Assisted Graph‐Based User Scheduling in Multi‐User MIMO LEO NTN Systems

International Journal of Satellite Communications and Networking, Volume 44, Issue 3, Page 275-287, May/June 2026.
ABSTRACT This paper addresses user clustering and scheduling for multi‐user MIMO low Earth orbit nonterrestrial network systems in full frequency reuse. Since the number of on‐ground user terminals is usually much higher than the number of on‐board LEO satellite antennas, user scheduling becomes a fundamental task.
Bilal Ahmad, Daniel Gaetano Riviello, Bruno De Filippo, Alessandro Guidotti, Alessandro Vanelli‐Coralli   +4 more
wiley   +1 more source

Novel Transmission Schemes for Multicell Downlink MC/DS-CDMA Systems Employing Time- and Frequency-Domain Spreading [PDF]

, 2013
This contribution investigates the achievable error performance of transmitter preprocessing in the downlink multicell multicarrier direct-sequence code-division multiple-access (MMC/DS-CDMA) systems employing both time (T)-domain and frequency (F ...
Yang, Lie-Liang, Lie-Liang Yang, Jia Shi, Shi, Jia   +3 more
core   +1 more source

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

Research on the system error performance of coherent orthogonal frequency division multiplexing system with M-distribution in satellite-to-ground laser communication

Tongxin xuebao, 2020
In order to alleviate the influence of atmospheric turbulence on the performance of satellite-to-ground laser communication system,based on the M-distribution atmospheric channel model,a multi-carrier coherent orthogonal frequency division multiplexing ...
Yi WANG, Yaping WANG
doaj   +2 more sources

Research on Source Packet Data Splicing and Sorting Strategy for ASO-S Satellite [PDF]

Jisuanji gongcheng
Source packet data sorting is a key step in processing scientific satellite ground segment data. Typically, sorting methods load all relevant information from a source package to be sorted into memory; this process consumes more memory resources and ...
PEI Xin, TONG Jizhou, MA Fuli, YU Qinsi, YANG Guangjian
doaj   +1 more source