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Ultra-Dense LEO Satellite Constellations: How Many LEO Satellites Do We Need?
IEEE Transactions on Wireless Communications, 2021Recently, the ultra-dense low Earth orbit (LEO) satellite constellation over high-frequency band has served as a potential solution for high-capacity backhaul data services. In this paper, we consider an ultra-dense LEO-based terrestrial-satellite network where terrestrial users can access the network through the LEO-assisted backhaul.
Ruoqi Deng +4 more
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IEEE Potentials, 2004
This paper discusses the role played by wireless network infrastructure in mobile commerce applications. The user's perception of service quality depends on the available resources and capabilities of the network. The new generation of low earth orbit (LEO) mobile satellite networks, deployed at altitudes ranging from 500 km to 2000 km, are well suited
S. Olariu, P. Todorova
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This paper discusses the role played by wireless network infrastructure in mobile commerce applications. The user's perception of service quality depends on the available resources and capabilities of the network. The new generation of low earth orbit (LEO) mobile satellite networks, deployed at altitudes ranging from 500 km to 2000 km, are well suited
S. Olariu, P. Todorova
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21st International Communications Satellite Systems Conference and Exhibit, 2003
The usage of LEO Satellite for multi mission application such as voice, data transmission, E-mail and remote sensing has been increasing very rapidly in recent years. This is because of its low production cost, low lunching cost and low power transmission due its low orbit.
H. Rohi, M. Nasirzadeh, H. Hajghassem
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The usage of LEO Satellite for multi mission application such as voice, data transmission, E-mail and remote sensing has been increasing very rapidly in recent years. This is because of its low production cost, low lunching cost and low power transmission due its low orbit.
H. Rohi, M. Nasirzadeh, H. Hajghassem
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DTN for LEO Satellite Communications
2011Satellite communications are an interesting and promising application field for Delay/Disruption Tolerant Networking (DTN). Although primarily conceived for deep space communications and sensor networks, it was immediately recognized that DTN was applicable to satellite environments, in particular to cope with the intermittent channels typical of LEO ...
CAINI, CARLO, FIRRINCIELI, ROSARIO
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IEEE International Conference on Networks. ICON '99 Proceedings (Cat. No.PR00243), 2005
The Internet Engineering Task Force (IETF) is working on extending the traditional TCP/IP model for supporting multimedia and real-time applications on the Internet. Thus, new protocols have been developed such as the resource reservation protocol (RSVP). At the same time, there has been a growing interest in using low Earth orbit (LEO) satellites.
M.E. Villapol, J. Billington
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The Internet Engineering Task Force (IETF) is working on extending the traditional TCP/IP model for supporting multimedia and real-time applications on the Internet. Thus, new protocols have been developed such as the resource reservation protocol (RSVP). At the same time, there has been a growing interest in using low Earth orbit (LEO) satellites.
M.E. Villapol, J. Billington
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Interbeam Handover in LEO Satellite Systems
International Journal of Satellite Communications, 1998This paper evaluates the performance of interbeam handover in LEO Satellite systems. The evaluation is based on an analytical model that is specific for interbeam handover. There are three performance parameters concerned: handover probability, forced termination probability, and time availability.
A. K. Widiawan, A. Sammut, B. G. Evans
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Channel simulation on LEO satellites
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010), 2003A channel simulation program in the Ka-band has been developed to study the characteristics of the communication link between the ground station and the ROCSAT-1. The effects of orbital parameters, power level, antenna radiation patterns, rain attenuation, transmission data rate, and internal noise source on the carrier-to-noise ratio are studied.
null Jeng-Fu Kiang +2 more
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Estimation of LEO satellite channels
Proceedings of ICICS, 1997 International Conference on Information, Communications and Signal Processing. Theme: Trends in Information Systems Engineering and Wireless Multimedia Communications (Cat. No.97TH8237), 2002In this paper, we propose a new channel estimation algorithm for low Earth orbit satellite digital communications. Low Earth orbit satellite channels impart severe spreading in delay and Doppler on the transmitted signal. We model the channel as a tapped-delay-line filter with time-varying complex coefficients.
L.M. Davis, I.B. Collings, R.J. Evans
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Doppler characterization for LEO satellites
IEEE Transactions on Communications, 1998Mobile ground-based terminals observe significant Doppler on the forward channel when communicating through low Earth orbit (LEO) satellites. This paper deals with the analytic derivation of the Doppler shift measured by a user on the surface of Earth on a signal transmitted by a circular orbit LEO satellite. Two simplifications are performed to obtain
I. Ali, N. Al-Dhahir, J.E. Hershey
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LEO satellite constellation performance analysis
Proceedings of MILCOM '93 - IEEE Military Communications Conference, 2002To date, radio frequency crosslinks have been the preferred communication medium for low Earth orbit (LEO) satellite networks. However, laser crosslinks in satellite constellations introduce many new and interesting research problems not addressed in these conventional methods.
C. Ward +4 more
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