Results 31 to 40 of about 2,232 (294)
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
On-Board Federated Learning for Dense LEO Constellations
ICC 2022 - IEEE International Conference on Communications, 2022 Mega-constellations of small-size Low Earth Orbit (LEO) satellites are currently planned and deployed by various private and public entities. While global connectivity is the main rationale, these constellations also offer the potential to gather immense amounts of data, e.g., for Earth observation. Power and bandwidth constraints together with motives
Nasrin Razmi +3 more
openaire +3 more sources
LEO Satellite Constellations for 5G and Beyond: How Will They Reshape Vertical Domains? [PDF]
, 2021 The rapid development of communication technologies in the past decades has provided immense vertical opportunities for individuals and enterprises. However, conventional terrestrial cellular networks have unfortunately neglected the huge geographical ...
OTTERSTEN, Björn +16 more
core +1 more source
Modeling and Analysis of RFI Impacts on Imaging between Geosynchronous SAR and Low Earth Orbit SAR
Remote Sensing, 2022 Due to the short revisit time and large coverage of Geosynchronous synthetic aperture radars (GEO SARs) and the increasing number of low earth orbit synthetic aperture radar (LEO SAR) constellations, radio frequency interference (RFI) between GEO SARs ...
Xichao Dong +4 more
doaj +1 more source
LEO Satellite Constellation for Internet of Things
IEEE Access, 2017 Internet of Things (IoT) is one of the evolutionary directions of the Internet. This paper focuses on the low earth orbit (LEO) satellite constellation-based IoT services for their irreplaceable functions. In many cases, IoT devices are distributed in remote areas (e.g., desert, ocean, and forest) in some special applications, they are placed in some ...
Zhicheng Qu +3 more
openaire +2 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
On-Board Decentralized Observation Planning for LEO Satellite Constellations
, 2023 The multi-satellite on-board observation planning (MSOOP) is a variant of the multi-agent task allocation problem (MATAP). MSOOP is used to complete the observation task allocation in a fully cooperative mode to maximize the profits of the whole system ...
Bingyu Song +5 more
core +1 more source
Location Management in Internet Protocol-Based Future LEO Satellite Networks: A Review
IEEE Open Journal of the Communications Society, 2022 Future integrated terrestrial, aerial, and space networks will involve thousands of low-Earth-orbit (LEO) satellites, which will form a network of mega-constellations.
Tasneem Darwish +4 more
doaj +1 more source
Positioning performance of LEO mega constellations in deep urban canyon environments
, 2022 Lack of direct line-of-sight (LOS) signals from mainstream Global Navigation Satellite System (GNSS) in deep urban canyon environments leads to poor Positioning, Navigation and Timing (PNT) accuracy. In spite of various available techniques and solutions,
De Sanctis M., Cianca E., More H.
core +1 more source
Demand-Aware Flexible Handover Strategy for LEO Constellation
2023 IEEE International Conference on Communications Workshops (ICC Workshops), 2023 peer ...
Tedros Salih Abdu +5 more
openaire +2 more sources