NDLI: Advanced Power Control and Handover Algorithms for Mobile Satellite Communications Systems with Ancillary Terrestrial Component

Content Provider	IEEE Xplore Digital Library
Author	Byoung-Gi Kim Seung Min Lee Kunseok Kang Do-Seob Ahn
Copyright Year	2007
Description	Author affiliation: Div. of Radio & Broadcasting Res., Electron. & Telecommun. Res. Inst. (Byoung-Gi Kim; Seung Min Lee; Kunseok Kang; Do-Seob Ahn)
Abstract	In this paper, modified power control algorithms are proposed for a satellite mobile communications system with ancillary terrestrial component (ATC). In order to increase system capacity and reduce the transmitting power of the user's equipment, we propose the modified power control scheme consisting of the modified closed-loop and open-loop power control. The modified closed-loop power control (CLPC) algorithm, combining the delay compensation algorithms and pilot diversity, is mainly applied to the ATC link in urban areas because it is more suitable to the short round-trip delay (RTD). In the case of rural areas where ATCs are not deployed or a signal is not received from ATCs, combining monitoring transmitting power equipment and open-loop power control (OLPC) algorithms using an efficient pilot diversity is mainly applied to the link between the user's equipment and the satellite. Two power control algorithms are applied equally to the boundary areas where two kinds of signals are received in order to ensure coverage continuity. The simulation results show that the modified power control scheme has good performance compared to conventional power control schemes in a geostationary earth orbit (GEO) satellite system with ATC.
Starting Page	1420
Ending Page	1424
File Size	251087
Page Count	5
File Format	PDF
ISBN	1424402662
ISSN	15502252
DOI	10.1109/VETECS.2007.297
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-04-22
Publisher Place	Ireland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power control Satellite communication Satellite broadcasting Artificial satellites Diversity reception Delay Monitoring Earth Telecommunication standards Multiaccess communication
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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