Title :
A study of user link for CDMA global multimedia low Earth orbit satellite system
Author :
Ikegami, Tomoaki ; Higuchi, Tatsuya ; Suzuki, Ryutaro
Author_Institution :
Dept. of Electron. & Commun., Meiji Univ., Kawasaki, Japan
Abstract :
This paper deals with the configuration of the service link and proposes a CDMA based multimedia transmission scheme for the up link of the next generation low Earth orbit satellite (NeLS) system. To realize the proposed NeLS system, this paper deals with service link part, and proposes QS-CDMA as a candidate for the uplink multiple access method. In order to simplify the initial acquisition and synchronization scheme to establish connection, the position information of the user terminals is assumed to be known. The required accuracy of the position information is evaluated.
Keywords :
Global Positioning System; code division multiple access; mobile satellite communication; multimedia communication; multiuser channels; radio links; synchronisation; CDMA global multimedia LEO satellite system; GPS satellites; QS-CDMA; acquisition; connection establishment; low Earth orbit; multiple access method; next generation low Earth orbit satellite system; position information accuracy; regenerative repeating system; service link configuration; synchronization; uplink; user link; user terminals; Artificial satellites; Communication system traffic control; Electronic mail; Low earth orbit satellites; Multiaccess communication; Multimedia communication; Multimedia systems; Satellite ground stations; Switches; Timing;
Conference_Titel :
Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on
Print_ISBN :
0-7803-7442-8
DOI :
10.1109/WPMC.2002.1088221
