Results 21 to 30 of about 2,036 (280)
Optimal Progressive Pitch for OneWeb Constellation with Seamless Coverage
Sensors, 2022 Large-scale broadband low earth orbit (LEO) satellite systems have become a possibility due to decreased launch costs and rapidly evolving technology. Preventing huge LEO satellite constellations from interfering with the geostationary earth orbit (GSO ...
Cheng Zou +5 more
doaj +1 more source
LTE‐based satellite communications in LEO mega‐constellations [PDF]
International Journal of Satellite Communications and Networking, 2018 SummaryThe integration of satellite and terrestrial networks is a promising solution for extending broadband coverage to areas not connected to a terrestrial infrastructure, as also demonstrated by recent commercial and standardisation endeavours. However, the large delays and Doppler shifts over the satellite channel pose severe technical challenges ...
Alessandro Guidotti +7 more
openaire +5 more sources
Integration of Satellites in 5G through LEO Constellations [PDF]
GLOBECOM 2017 - 2017 IEEE Global Communications Conference, 2017 The standardization of 5G systems is entering in its critical phase, with 3GPP that will publish the PHY standard by June 2017. In order to meet the demanding 5G requirements both in terms of large throughput and global connectivity, Satellite Communications provide a valuable resource to extend and complement terrestrial networks.
KODHELI, OLTJON +2 more
openaire +3 more sources
Ground-Assisted Federated Learning in LEO Satellite Constellations [PDF]
IEEE Wireless Communications Letters, 2022 Submitted to IEEE Wireless Communications ...
Nasrin Razmi +3 more
openaire +2 more sources
Inter-Plane Satellite Matching in Dense LEO Constellations [PDF]
2019 IEEE Global Communications Conference (GLOBECOM), 2019 Dense constellations of Low Earth Orbit (LEO) small satellites are envisioned to make extensive use of the inter-satellite link (ISL). Within the same orbital plane, the inter-satellite distances are preserved and the links are rather stable. In contrast, the relative motion between planes makes the inter-plane ISL challenging.
Beatriz Soret +2 more
openaire +2 more sources
Dianxin kexue, 2022 The low earth orbit (LEO) satellite Internet constellation is a hot spot in current global research.And it is highly anticipated that the LEO satellite Internet constellation supports random access to remote sensing satellites and direct on-orbit ...
Xiaoyu CHANG +5 more
doaj +2 more sources
Modelica-Based Modeling on LEO Satellite Constellation
, 2021 The new generation of LEO (Low Earth Orbit) communication satellite constellations have the advantages of low latency, strong signals, and global coverage. In order to achieve global coverage, the LEO satellite constellations are often very large, with a
Chan, Liu +9 more
core +1 more source
Resource Allocation for LEO Beam-Hopping Satellites in a Spectrum Sharing Scenario
IEEE Access, 2021 In recent years, low earth orbit (LEO) satellite constellation systems have been developed rapidly. However, the scarcity of satellite spectrum resources has become one of the major obstacles to this trend.
Jingyu Tang +4 more
doaj +1 more source
, 2021 With the rapid development of satellite technology and the need to satisfy the increasing demand for location-based services, in challenging environments such as indoors, forests, and canyons, there is an urgent need to improve the position accuracy in ...
Lvyang Ye +5 more
core +1 more source
Connection Planning Method Between LEO Communication Constellation and Earth Station
天地一体化信息网络, 2022 A connection planning method between LEO communication constellation and earth station was proposed.Considering the large number of LEO communication constellation satellites, it is diffi cult to directly establish the connection planning method between ...
Shuge ZHAO +4 more
doaj +2 more sources