Adaptive open loop power control and impact on the Erlang capacity of LEO satellite CDMA systems

Author

Zihua, Guo ; Letaief, Khaled

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ., Kowloon, China

Volume

2

fYear

2000

fDate

2000

Firstpage

1591

Abstract

Satellite systems are some of the key telecommunications systems which have the potential of achieving ubiquitous and global personal communications. The satellite component of IMT-2000 based on DS/CDMA system, such as SW-CDMA, has been proposed. For such systems, power control (PC) is critical, and only open loop power control (OLPC) is feasible. We propose an adaptive OLPC method for DS/CDMA satellite communication systems based on a Markov chain channel model. We then derive the Erlang capacity of the satellite DS/CDMA system with this PC scheme and demonstrate that power Control error (PCE) affects the Erlang capacity significantly. In addition, dual-satellite diversity is considered and we show that diversity can significantly improve the Erlang capacity of the satellite CDMA system

Keywords

Markov processes; adaptive control; channel capacity; code division multiple access; diversity reception; mobile satellite communication; multiuser channels; personal communication networks; power control; spread spectrum communication; telecommunication control; DS/CDMA satellite communication systems; Erlang capacity; IMT-2000; LEO satellite CDMA systems; Markov chain channel model; SW-CDMA; adaptive open loop power control; dual-satellite diversity; global personal communications; power Control error; power control; telecommunications systems; Adaptive control; Artificial satellites; Error correction; Information technology; Low earth orbit satellites; Multiaccess communication; Power control; Power system modeling; Programmable control; Satellite communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st

Conference_Location

Tokyo

ISSN

1090-3038

Print_ISBN

0-7803-5718-3

Type

conf

DOI

10.1109/VETECS.2000.851395

Filename

851395