NDLI: Evaluation of diversity gain and system capacity increase in a multiple HAP system

Content Provider	IEEE Xplore Digital Library
Author	Celcer, T. Kandus, G. Javornik, T. Mohorcic, M. Plevel, S.
Copyright Year	2006
Description	Author affiliation: Dept. of Commun. Syst., Jozef Stefan Inst., Ljubljana (Celcer, T.; Kandus, G.; Javornik, T.; Mohorcic, M.; Plevel, S.)
Abstract	High altitude platform (HAP) system offers establishment of communication links with predominantly line-of-sight (LOS) conditions due to high elevation angles. However, in mobile scenario, the transmitted signal is still subject to blocking due to obstacles between HAP and the user, which increases the probability of link outage. In the light of this, multiple HAP constellations with overlapped coverage areas can be exploited for platform diversity to improve the system reliability and availability or for the increase of the system capacity through the use of highly directional user antennas. In this paper we evaluate a potential diversity gain and capacity increase for a mobile scenario based on a simulation taking into account a digital relief model (DRM) of Slovenia and two main railway tracks, providing results in terms of the timeshare of different visibility events and the CINR values
Starting Page	114
Ending Page	118
File Size	6121807
Page Count	5
File Format	PDF
ISBN	1424401186
DOI	10.1109/IWSSC.2006.256004
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-09-14
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Availability Fading Satellite broadcasting Diversity methods Directive antennas Mobile communication Rail transportation Discrete event simulation Broadband antennas Reliability
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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