NDLI: Dual satellite path diversity and practical channel management for non-geostationary satellite systems

Content Provider	IEEE Xplore Digital Library
Author	Wisloff, T.E.
Copyright Year	1996
Description	Author affiliation: Dept. of Telematics, Norwegian Univ. of Sci. & Technol., Trondheim, Norway (Wisloff, T.E.)
Abstract	In non-geostationary satellite systems dual satellite path diversity has been proposed to improve the link quality when the network load is low. The expense is one channel realised for the price of two, as each diversity branch is broadcast through different satellites. This paper discusses how this cost can be reduced when the network reaches congestion. In essence, allocated and engaged diversity branches are regarded as a stand-by resource group available through preemption, such that quality experienced by individual links can be traded for capacity. The reliability of such a mechanism is dependent on the system's ability to clear a diversity branch, and then re-allocate it for the new connection in a timely fashion. The paper therefore also considers a mechanism suitable for reducing the call set-up delay. The paper concludes that preemption is a suitable mechanism for designing a satellite system with soft degradation that is also robust to channel impairments due to obstruction of the line of sight path between a user and a satellite.
Starting Page	745
Ending Page	749
File Size	770558
Page Count	5
File Format	PDF
ISBN	0780333004
DOI	10.1109/ICUPC.1996.562673
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-10-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Diversity methods Satellite broadcasting Lasers and Electro-Optics Society Time division multiple access GSM Earth Telematics Costs Resource management Delay
Content Type	Text
Resource Type	Article

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