An overview of the IRIDIUM (R) low Earth orbit (LEO) satellite system
C.E. Fossa,Richard A. Raines,Gregg H. Gunsch,Michael A. Temple +3 more
- pp 152-159
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This paper provides a tutorial overview of the IRIDIUM(R) low earth orbit (LEO) satellite system and analyzes the network performance in terms of end-to-end delay and hop count.Abstract:
This paper provides a tutorial overview of the IRIDIUM(R) low earth orbit (LEO) satellite system. Section I contains an introduction to the IRIDIUM(R) network as well as the system specifications. Section II discusses the satellite constellation design, orbital parameters, and horizontal pointing angles between satellites. Section III introduces the idea of time dependent connectivity in a mobile network, and analyzes the cycle of network connectivity for IRIDIUM(R). Section IV discusses the IRIDIUM(R) Time Division Multiple Access (TDMA) and Frequency Division Multiple Access (FDMA) schemes and uses these to calculate the overall system capacity. Section V examines the call processing procedure to include user location and call set up. Finally, Section VI analyzes the network performance in terms of end-to-end delay and hop count.read more
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References
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Journal ArticleDOI
Analysis of LEO, MEO, and GEO global mobile satellite systems in the presence of interference and fading
TL;DR: An in-depth analysis of these constellations is addressed, evaluating both geometrical performance measures and cochannel interference levels caused by extensive frequency reuse, allowing a fair comparison between LEO, MEO, and GEOconstellations.
Journal Article
Circular polar constellations providing continuous single or multiple coverage above a specified latitude
W. S. Adams,L. Rider +1 more
Journal ArticleDOI
Analysis of system parameters for LEO/ICO-satellite communication networks
TL;DR: A formal model for LEO/ICO based networks is introduced and a method for the evaluation of the link capacities is proposed, given the network topology and the traffic requirements.
Journal ArticleDOI
The role of satellites in personal communication services
F. Ananasso,F. Delli Priscoli +1 more
TL;DR: The paper provides a view of the satellite systems already in operation or currently being developed and outlines the guidelines followed by future satellite systems (in that respect, particular emphasis is given to small satellites).
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A comparison of the IRIDIUM and AMPS systems
TL;DR: Although the two systems' architectures, services provided, and subscriber number formats vary enormously, the methods used for call registration, call setup, call handoff, and cell reuse are surprisingly similar.