The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Bit error probability and channel capacity in the return link of GLOBALSTAR-A CDMA LEO mobile satellite system

CDMA 방식의 저궤도 이동위성통신 시스템 GLOBALSTAR 역방향 링크의 비트오율 및 채널용량에 관한 연구

  • 강형진 (LG정보통신 중앙연구소) ;
  • 김동인 (서울시립대학교 전자공학과)
  • Published : 1997.07.01
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Abstract

In this paper the reverse link of the GLOBALSTAR-the representative CDMA LEO satellite system and LEO mobile satellite channel are developed by the SPW software simulation tool. And the performance of the system is evaluated. GLOBALSTAR is designed to give cellular-type service to hand-held user terminals through a constellation of 48 LEO satellites in circular orbites with 1414 Km altitude. Since LEO mobile satellite system communicates with mobile unit, it is suffered from severe multipath fading and shadowing. The fast mobility of LEO satellites makes the channel condition time vering. So, the LEO mobile satellite channel is different from land mobile channels. In this unique LEO satellite channel, it is shown that the performance of the GLOBALSTAR reverse link is varied according to the elevational angle, but this variation is overcome by satellite path diversity.

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References

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