Engineering and Computer Science Faculty Publications

Title

On the Power Control of a Mobile Satellite CDMA System

Document Type

Conference Proceeding

Publication Date

11-1995

Journal Title

Proceedings of the Military Communications Conference, 1995

Volume

2

First Page

523

Last Page

528

DOI

10.1109/MILCOM.1995.483521

Abstract

We consider a multiple-beam mobile satellite CDMA system where all beams share the same frequency band. Though there is no near/far problem in mobile satellite CDMA, channel fading and the uneven antenna pattern of the satellite affect the performance. The up-link is modeled as a Rayleigh fading, log-normal shadowing channel. Due to the multiple beams in a footprint, the mobile station suffers interference from adjacent beams. Two power control strategies are proposed to compensate for the path loss and the uneven antenna attenuation, and to reduce the effect of log-normal shadowing and Rayleigh fading. One is an equal received power control strategy and the other is the optimal power control law strategy.

Keywords

Rayleigh channels, adjacent channel interference, antenna radiation patterns, code division multiple access, fading, land mobile radio, mobile satellite communication, multibeam antennas, power control, radio links, radiofrequency interference, satellite antennas, telecommunication control