Results 31 to 40 of about 40,526 (211)

Optimization of multiple access mode for large-scale constellation networking communication

open access: yesXibei Gongye Daxue Xuebao, 2023
In the large-scale satellite constellation technology, the establishment of satellite internal network is the top priority. As the network capacity of the constellation continues to expand and the number of satellite nodes continues to increase, the ...
GUO Xiaoxu   +4 more
doaj   +1 more source

High-Throughput Satellite Precoding Algorithm Based on Non-Ideal Channel State Information

open access: yes天地一体化信息网络, 2023
In order to suppress co-channel interference caused by frequency reuse, high-throughput satellite communication systems have begun to study ground interference suppression technologies, including multi-user detection technology applied in the reverse ...
Yingzhe DOU   +2 more
doaj   +2 more sources

Sparse joint representation for massive MIMO satellite uplink and downlink based on dictionary learning

open access: yesETRI Journal
We address the challenge of jointly representing uplink (UL) and downlink(DL) channels for a massive multiple-input multiple-output satellite system.We employ dictionary learning for sparse representation with the goal of mini-mizing the number of UL/DL ...
Qing-Yang Guan, Shuang Wu, Zhuang Miao
doaj   +1 more source

Performance Evaluation of Random Access Methods for IoT-over-Satellite

open access: yesRemote Sensing, 2022
Low Earth orbit (LEO) satellite constellations are currently being explored to provide global and seamless coverage for IoT-over-Satellite applications. Random access techniques require low transmission overhead providing a compatible route for IoT-over ...
Chiu Chun Chan   +2 more
doaj   +1 more source

Satellite system performance assessment for in-flight entertainment and air traffic control [PDF]

open access: yes, 2007
Concurrent satellite systems have been proposed for IFE (In-Flight Entertainment) communications, thus demonstrating the capability of satellites to provide multimedia access to users in aircraft cabin. At the same time, an increasing interest in the use
Pirovano, Alain   +3 more
core  

Aerial RIS-aided physical layer security design for satellite communication among similar channels

open access: yesJournal of Information and Intelligence, 2023
Satellite communications and reconfigurable intelligent surface (RIS) are considered as two promising technologies that can significantly improve the coverage and energy efficiency of future wireless communication networks.
Chengjun Jiang   +4 more
doaj   +1 more source

Multiple Antenna Configuration of LEO-MIMO Feeder Link for High Channel Capacity

open access: yesIEEE Access
We investigated low Earth orbit satellite (LEO) communications applying Multiple-Input/Multiple-Output (MIMO) technology to the feeder link transmission between a satellite and gateway antennas to improve the channel capacity.
Daisuke Goto   +3 more
doaj   +1 more source

Performance of Integrated Ground-Air-Space FSO Links Over Various Turbulent Environments

open access: yesIEEE Photonics Journal, 2022
We analyze the outage probability of integrated ground-air-space free-space optical (FSO) communication links for different atmospheric turbulence channel models.
Yalcn Ata, Mohamed-Slim Alouini
doaj   +1 more source

Performance Assessment using ACM in DVB-S2/Advanced DVB-RCS Satellite Systems

open access: yes, 2009
This paper presents the benefits of using adaptive coding and modulation in DVB-S2/advanced DVB-RCS satellite systems. The results are based on a satellite system simulator which was developed during an ESA study.
Boussemart, Vincent   +3 more
core   +1 more source

Performance of VoIP with DCCP for satellite links [PDF]

open access: yes, 2009
We present experimental results for the performance of selected voice codecs using the Datagram Congestion Control Protocol (DCCP) with TCP-Friendly Rate Control (TFRC) congestion control mechanism over a satellite link.
Lochin, Emmanuel   +5 more
core   +1 more source

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