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Power Control Schemes for Land Mobile Satellite Communication Systems  

Lee, Nam-Gil (Department of Information & Communication System, Korea Polytechnic College)
Hwang, In-Tae (Chonnam National University)
Kim, Seong-Hwan (Department of Control System Engineering, Mokpo National University)
Na, Cheol-Hun (Mokpo National University)
Ryoo, Sang-Jin (Dept. of Computer Media, Hanyeong College)
Abstract
In order to increase system capacity and reduce the transmitting power of the user's equipment, we propose an advanced power control scheme consisting of a modified open-loop power control (OLPC) and closed-loop power control (CLPC) for land mobile satellite communication systems. The improved CLPC scheme, combining delay compensation algorithms and pilot diversity, is mainly applied to the ancillary terrestrial component (ATC). ATC link in urban areas, because it is more suitable to the short round-trip delay (RTD).
Keywords
power control; pilot diversity;
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