Title :
System operation for IS-95 terrestrial vs. GlobalstarTM-similarities and differences
Author_Institution :
Qualcomm Inc., USA
Abstract :
The GlobalstarTM system provides telephone and data services to mobile and fixed users between ±70° latitude. Connections are made from the mobile user to one of a group of fixed terrestrial gateways via a constellation of low Earth orbiting satellites (LEOs). Globalstar uses an extension of the CDMA, IS-95 standard used for cellular systems. The satellite link is sufficiently different from the terrestrial link that certain departures from IS-95 were needed both in signal design and in system operation. This paper describes some ofthe similarities and differences with IS-95
Keywords :
cellular radio; code division multiple access; data communication; land mobile radio; mobile satellite communication; satellite links; telecommunication standards; telephone networks; CDMA; Globalstar system; IS-95 standard; IS-95 terrestrial system; LEO; cellular systems; data services; fixed terrestrial gateways; fixed users; latitude; low Earth orbiting satellites; mobile users; satellite link; signal design; system operation; telephone services; terrestrial link; Base stations; Energy resolution; Fading; Fingers; Multipath channels; Reflection; Satellites; Technological innovation;
Conference_Titel :
Universal Personal Communications Record, 1997. Conference Record., 1997 IEEE 6th International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-3777-8
DOI :
10.1109/ICUPC.1997.625573
