DocumentCode :
2288418
Title :
Signal-to-interference ratio of CDMA in low Earth-orbital satellite communication systems with nonuniform traffic distribution
Author :
Jamalipour, Abbas ; Katayama, Masaaki ; Yamazato, Takaya ; Ogawa, Akira
Author_Institution :
Dept. of Inf. Electron., Nagoya Univ., Japan
Volume :
3
fYear :
1994
fDate :
28 Nov- 2 Dec 1994
Firstpage :
1748
Abstract :
The performance of a satellite communication system in which the satellites are in non-geostationary orbits, with nonuniform geographical distribution of the traffic load is estimated through analysis. It is shown that when CDMA is applied to the reverse link, the traffic nonuniformity results in a large difference in the signal qualities. The signal above a dense traffic area has a low signal-to-interference ratio (SIR), while the signal over a sparse traffic area has an excessive SIR. In addition, a traffic assignment scheme, which makes the load of the satellite over the dense traffic area smaller, is proposed and its performance improvement is estimated
Keywords :
code division multiple access; land mobile radio; mobile satellite communication; radiofrequency interference; satellite links; telecommunication traffic; CDMA; LEO satellite communication systems; dense traffic area; low Earth orbit; low signal-to-interference ratio; non-geostationary orbits; nonuniform geographical distribution; nonuniform traffic distribution; reverse link; signal qualities; signal-to-interference ratio; sparse traffic area; system performance; traffic assignment; traffic load; traffic nonuniformity; Artificial satellites; Communication system traffic control; Interference; Low earth orbit satellites; Multiaccess communication; Personal communication networks; Satellite broadcasting; Satellite communication; Telecommunication traffic; Traffic control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 1994. GLOBECOM '94. Communications: The Global Bridge., IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-1820-X
Type :
conf
DOI :
10.1109/GLOCOM.1994.513173
Filename :
513173
Link To Document :
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