Results 21 to 30 of about 3,108 (295)
Adaptive Beam Pattern Selection and Resource Allocation for NOMA-Based LEO Satellite Systems [PDF]
, 2022 The low earth orbit (LEO) satellite system is one of the promising solutions to provide broadband services to a wide-coverage area for future integrated LEO-6G networks, where users' demands vary with time and geographical locations.
WANG, Anyue +7 more
core +1 more source
GNSS rapid precise point positioning enhanced by low Earth orbit satellites
Satellite Navigation, 2023 The Low Earth Orbit (LEO) satellites can be used to effectively speed up Precise Point Positioning (PPP) convergence. In this study, 180 LEO satellites with a global distribution are simulated to evaluate their contribution to the PPP convergence.
Ju Hong +7 more
doaj +1 more source
Switched Ethernet Networking over LEO Satellite [PDF]
2005 2nd International Symposium on Wireless Communication Systems, 2005 Satellite onboard switching capabilities, and their possibility to enable "over-the-air" networks, are a strongly innovative achievement of modern satellite communication. The exploitation of satellite networking is especially relevant in the case of low Earth orbit satellites (LEO), where the reduced latency makes a LEO mesh network highly appealing ...
Mancuso, V +3 more
openaire +2 more sources
Distributed Massive MIMO for LEO Satellite Networks
IEEE Open Journal of the Communications Society, 2022 The ultra-dense deployment of interconnected satellites will characterize future low Earth orbit (LEO) mega-constellations. Exploiting this towards a more efficient satellite network (SatNet), this paper proposes a novel LEO SatNet architecture based on distributed massive multiple-input multiple-output (DM-MIMO) technology allowing ground user ...
Mohammed Y. Abdelsadek +2 more
openaire +3 more sources
On routing for extending satellite service life in LEO satellite networks [PDF]
2014 IEEE Global Communications Conference, 2014 We address the problem of routing for extending the service life of satellites in Iridium-like LEO constellations. Satellites in LEO constellations can spend over 30% of their time under the earth's umbra, time during which they are powered by batteries. While the batteries are recharged by solar energy, the depth of discharge they reach during eclipse
Mohammed Hussein +2 more
openaire +2 more sources
Self-organising satellite constellation in geostationary Earth orbit [PDF]
, 2015 This paper presents a novel solution to the problem of autonomous task allocation for a self-organizing satellite constellation in Earth orbit. The method allows satellites to cluster themselves above targets on the Earth’s surface.
Colombo, Camilla +3 more
core +1 more source
Key technologies of satellite communications aided by reconfigurable holographic surfaces
Dianxin kexue, 2022 Ultra-dense low earth orbit (LEO) satellite communication networks can overcome the scarcity of spectrum resources and the limited coverage of traditional terrestrial networks, and thus have the potential to provide high data rate services and global ...
Xinyuan HU +4 more
doaj +2 more sources
Computation Offloading and Resource Allocation Based on P-DQN in LEO Satellite Edge Networks
Sensors, 2023 Traditional low earth orbit (LEO) satellite networks are typically independent of terrestrial networks, which develop relatively slowly due to the on-board capacity limitation.
Xu Yang +5 more
doaj +1 more source
DNNs Based Computation Offloading for LEO Satellite Edge Computing
, 2022 Huge low earth orbit (LEO) satellite networks can achieve global coverage with low latency. In addition, mobile edge computing (MEC) servers can be mounted on LEO satellites to provide computing offloading services for users in remote areas. A multi-user
Jian Wu, Liang Zhang, Min Jia, Qing Guo
core +1 more source
User group based multi-satellite handover strategy for LEO satellite networks
Dianxin kexue, 2022 LEO satellite network plays an important role in global communication in the future mobile communication.In large-scale LEO satellite networks, frequent concurrent handoffs by a large number of users will reduce the handover success rate and increase the
Hongtao ZHU, Qing GUO
doaj +2 more sources