Results 21 to 30 of about 1,581,787 (389)
Channel Estimation for LEO Satellite Massive MIMO OFDM Communications [PDF]
IEEE Transactions on Wireless Communications, 2022 In this paper, we investigate the massive multiple-input multiple-output orthogonal frequency division multiplexing channel estimation for low-earth-orbit satellite communication systems.
Ke-Xin Li, Xiqi Gao, Xianggen Xia
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Design and Implementation of the Mission Planning Functions for the KOMPSAT-2 Mission Control Element [PDF]
Journal of Astronomy and Space Sciences, 2003 Spacecraft mission planning functions including event prediction, mission scheduling, command planning, and ground track display have been developed for the KOMPSAT-2 mission operations.
Byoung-Sun Lee, Jae-Hoon Kim
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Multibeam Satellite Communications With Energy Efficiency Optimization [PDF]
IEEE Communications Letters, 2022 Energy efficiency (EE) is an important aspect of satellite communications. Different with the existing algorithms that typically use the first-order Taylor lower bound approximation to convert non-convex EE maximization (EEM) problems into convex ones ...
Chenhao Qi +4 more
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Analysis of the Motion of a Tether-Perturbed Satellite [PDF]
Journal of Astronomy and Space Sciences, 2003 The motion of each satellite in a tethered satellite system is non-Keplerian in the Earth's gravitational field. In this paper, the tether perturbation force is formulated and compared with the perturbation force due to the Earth's oblateness.
Sungki Cho, Jaehoon Kim
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Hybrid Satellite-UAV-Terrestrial Networks for 6G Ubiquitous Coverage: A Maritime Communications Perspective [PDF]
IEEE Journal on Selected Areas in Communications, 2021 In the coming smart ocean era, reliable and efficient communications are crucial for promoting a variety of maritime activities. Current maritime communication networks (MCNs) mainly rely on marine satellites and on-shore base stations (BSs).
Yanmin Wang +3 more
semanticscholar +1 more source
IEEE Access, 2018 Multicarrier faster-than-Nyquist (MFTN) is a spectral efficient transmission scheme for future communication systems. However, as one of the most important drawbacks of multicarrier transmission systems, the peak-to-average power ratio (PAPR) of MFTN ...
Aijun Liu +5 more
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Non‐geostationary satellite orbit communications satellite constellations history
International Journal of Satellite Communications And Networking, 2020 This special issue of the journal on ‘constellations’ comes at a critical time in their development as a second wave of such non‐geostationary satellite orbit (NGSO) systems is being planned and deployed.
T. Butash, P. Garland, B. Evans
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On the virtualization and dynamic orchestration of satellite communication services [PDF]
, 2016 Key features of satellite communications such as wide-scale coverage, broadcast/multicast support and high availability, together with significant amounts of new satellite capacity coming online, anticipate new opportunities for satellite communications ...
Ahmed, Toufik +8 more
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, 2023 With the incorporation of new innovations enabling digital information transmission and delivery by satellite, Satellite Communication Engineering is an unquestionably comprehensive introduction to satellite communication principles and engineering. One of the most amazing by products of the space missions, satellite communication has significantly ...
Dr. V. SESHA RATNA KUMARI +3 more
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Stacked Intelligent Metasurface Enabled LEO Satellite Communications Relying on Statistical CSI [PDF]
IEEE Wireless Communications LettersLow earth orbit (LEO) satellite communication systems have gained increasing attention as a crucial supplement to terrestrial wireless networks due to their extensive coverage area.
Shining Lin +4 more
semanticscholar +1 more source