Results 1 to 10 of about 1,581,787 (389)
EURASIP Journal on Wireless Communications and Networking, 2008 The call for papers resulted in a high number of submis- sions, from which we have been able to select 12 excellent papers dealing with the different aspects of satellite commu- nications and navigation. Multiple-input multiple-output (MIMO) techniques are attracting a considerable amount of attention from within the terrestrial wireless community. The
Alessandro Vanelli-Coralli +2 more
doaj +4 more sources
Trends in satellite communications [PDF]
2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333), 2003 Satellite communications exhibit a tremendous growth due to three main elements: interactivity, coverage and bandwidth asymmetry. The paper explores some of the current trends in the development of next generation satellite systems by analyzing several aspects: from orbital tracks to technology, from services to business opportunities.
E. Del Re +2 more
openalex +3 more sources
A Review of the Applications of Artificial Intelligence in Improving the Performance of Integrated Space-Air and Ground Networks [PDF]
فصلنامه علوم و فناوری فضایی, 2023 According to the technical specifications of the future generations of telecommunication (the fifth generation and later), which should provide new services with very high data rates in the minimum time and a wide coverage, as well as the exponential ...
Pedram Hajipour +4 more
doaj +1 more source
RIS-Assisted Energy-Efficient LEO Satellite Communications With NOMA [PDF]
IEEE Transactions on Green Communications and Networking, 2023 Low Earth Orbit (LEO) satellite networks are expected to play a crucial role in providing high-speed Internet access and low-latency communication worldwide. However, some challenges can affect the performance of LEO satellite networks. For example, they
Wali Ullah Khan +4 more
semanticscholar +1 more source
Beam Squint-Aware Integrated Sensing and Communications for Hybrid Massive MIMO LEO Satellite Systems [PDF]
IEEE Journal on Selected Areas in Communications, 2022 The space-air-ground-sea integrated network (SAGSIN) plays an important role in offering global coverage. To improve the efficient utilization of spectral and hardware resources in the SAGSIN, integrated sensing and communications (ISAC) has drawn ...
Li You +6 more
semanticscholar +1 more source
Random Access With Massive MIMO-OTFS in LEO Satellite Communications [PDF]
IEEE Journal on Selected Areas in Communications, 2022 This paper considers the joint channel estimation and device activity detection in the grant-free random access systems, where a large number of Internet-of-Things devices intend to communicate with a low-earth orbit satellite in a sporadic way.
Boxiao Shen +5 more
semanticscholar +1 more source
Hybrid Analog/Digital Precoding for Downlink Massive MIMO LEO Satellite Communications [PDF]
IEEE Transactions on Wireless Communications, 2022 Massive multiple-input multiple-output (MIMO) is promising for low earth orbit (LEO) satellite communications due to the potential in enhancing the spectral efficiency.
Li You +6 more
semanticscholar +1 more source
3D Display of Spacecraft Dynamics Using Real Telemetry [PDF]
Journal of Astronomy and Space Sciences, 2002 3D display of spacecraft motion by using telemetry data received from satellite in real-time is described. Telemetry data are converted to the appropriate form for 3-D display by the real-time preprocessor.
Sanguk Lee, Sungki Cho, Jaehoon Kim
doaj +1 more source
Estimation of a General Along-Track Acceleration in the KOMPSAT-1 Orbit [PDF]
Journal of Astronomy and Space Sciences, 2002 General along-track acceleration was estimated in the KOMPSAT-1 orbit determination process. Several sets of the atmospheric drag and solar radiation pressure coefficients were also derived with the different spacecraft area.
Byoung-Sun Lee +2 more
doaj +1 more source