Results 71 to 80 of about 191,135 (314)

LEO laser microwave hybrid inter-satellite routing strategy based on modified Q-routing algorithm

EURASIP Journal on Wireless Communications and Networking, 2022
Low earth orbit (LEO) satellite communication networks require huge load capacity and information processing speed to carry global communication traffic. Inter-satellite links and the on-board processing are the key technologies to achieve this goal, but
Fei Zheng, Chao Wang, Zou Zhou, Zhao Pi, Dongyan Huang   +4 more
doaj   +1 more source

Space-Time Reference with an Optical Link

, 2015
We describe a method for realizing a high-performance Space-Time Reference (STR) using a stable atomic clock in a precisely defined orbit and synchronizing the orbiting clock to high-accuracy atomic clocks on the ground.
Berceau, Paul, Hollberg, Leo, Kahn, Joseph M., Taylor, Michael   +3 more
core   +1 more source

Charge Transport in Ternary Charge‐Transfer Solid Solution Single Crystals

Advanced Functional Materials, EarlyView.
This study deconvolutes the roles of indirect (superexchange) and direct electronic coupling on charge transport in single crystals of an organic charge‐transfer molecular semiconductor (OSC). This model system elegantly demonstrates that structural defects introduced by chemical dopants play a significant role in the electronic performance ...
Jonathan C. Novak, Manikanta Makala, Edith L. MacKenzie, Veaceslav Coropceanu, Kimberly Agosto, Abigail A. Moravek, Oana D. Jurchescu, Ren A. Wiscons   +7 more
wiley   +1 more source

A novel satellite application deployment method in Satellite Constellation through Inter-Satellite Links

Journal of Cloud Computing: Advances, Systems and Applications
The increasing reliance on satellite constellations for global connectivity, particularly in remote and underserved areas, poses significant challenges in task scheduling within these networks.
Xifeng Xu, Yunni Xia, Qinglan Peng, Mengdi Wang, Yang Yu, Jiale Zhao   +5 more
doaj   +1 more source

Test Method for Single Satellite’s Inter-Satellite Link Pointing and Tracking via Ground Station

Aerospace
An inter-satellite link is a key technology that improves control accuracy, transmission efficiency, and autonomous capability of constellations. A satellite’s pointing and tracking abilities mainly determine the inter-satellite link’s performance, which
Zhenqiang Hong, Xuxing Huang, Lifeng Yang, Zhiqiang Bian, Yong Yang, Shuang Li   +5 more
doaj   +1 more source

Current optical technologies for wireless access [PDF]

, 2009
The objective of this paper is to describe recent activities and investigations on free-space optics (FSO) or optical wireless and the excellent results achieved within SatNEx an EU-framework 6th programme and IC 0802 a COST action.
Awan, Muhammad, Brandl, P., Capsoni, Carlo, Ghassemlooy, Zabih, Javornik, Tomaz, Kandus, Gorazd, Leitgeb, Erich, Nebuloni, R., Sheikh Muhammed, S.   +8 more
core  

Improvements in DCCP congestion control for satellite links [PDF]

, 2008
We propose modifications in the TCP-Friendly Rate Control (TFRC) congestion control mechanism from the Datagram Congestion Control Protocol (DCCP) intended for use with real-time traffic, which are aimed at improving its performance for long delay ...
Boreli, Roksana, Jourjon, Guillaume, Lochin, Emmanuel, Sarwar, Golam   +3 more
core   +2 more sources

A Local Pre-Rerouting Algorithm to Combat Sun Outage for Inter-Satellite Links in Low Earth Orbit Satellite Networks

Applied Sciences
Satellite networks show the development trend in global coverage, flexible access, and reliable transmission. They are the key to building a wide coverage, massive connection, three-dimensional, all-round, all-weather, space-, air- and ground-integrated ...
Jifeng Jin, L. Shang, Zijian Yang, Haiwang Wang, Guotong Li   +4 more
semanticscholar   +1 more source

Enhancing Synaptic Plasticity and Multistate Retention of Organic Neuromorphic Devices Using Anion‐Excessive Gel Electrolyte

Advanced Functional Materials, EarlyView.
Anion‐excessive gel‐based organic synaptic transistors (AEG‐OSTs) that can maintain electrical neutrality are developed to enhance synaptic plasticity and multistate retention. Key improvement is attributed to the maintenance of electrical neutrality in the electrolyte even after electrochemical doping, which reduces the Coulombic force acting on ...
Yousang Won, Jeongwoo Lee, Hyunwook Kim, Joon Hak Oh   +3 more
wiley   +1 more source

Surface Diffusion in SnTe‐PbTe Monolayer Lateral Heterostructures

Advanced Functional Materials, EarlyView.
The lateral heterostructures between 2D materials often suffer from the interdiffusion at the interfaces. Here, a surface diffusion mechanism is found to be dominating at the interfaces between semiconducting SnTe and PbTe monolayers. Atomically sharp interfaces can be achieved by suppressing this diffusion process. ABSTRACT The construction of complex
Jing‐Rong Ji, Zi'Ang Gao, Shiva Prasad Poudel, Rui‐Qi Cao, Tianzhe Chen, Luxin Li, Chong Liu, Salvador Barraza‐Lopez, Stuart S. P. Parkin, Kai Chang   +9 more
wiley   +1 more source