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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Adaptive Satellite Downlink transmission using Multicarrier CDMA

다중반송파 CDMA를 사용한 적응형 위성 하향링크 전송

  • 임광재 (한국전자통신연구원 이동통신연구단) ;
  • 김수영 (전북대학교 전자정보공학부) ;
  • 이호진 (한국전자통신연구원 디지털방송연구단)
  • Published : 2004.10.01
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Abstract

This paper presents an adaptive MC-CDMA transmission for downlink in mobile satellite system and simulation results on Ka-band mobile satellite channel. The simulation results show that the proposed scheme support a throughput of several tens of Mbit/s and a spectral efficiency range of 1 bit/s/Hz to 4.7 bit/s/Hz according to channel environments due to the adaptive broadband satellite transmission.

본 논문에서는 위성 하향 링크에서 강우 감쇄와 음영 페이딩에 대한 적응형 전송을 위한 MC-CDMA(multicarrier CDMA) 방식을 제시하고, Ka 대역 이동위성채널에서 페이딩, 강우 감쇄, 재전송 방식에 따른 적응형 MC-CDMA 하향링크의 성능을 비교 분석하였다. 제시된 하향 링크는 광대역 MC-CDMA 전송을 통해 수십 Mbit/s 처리율과 채널 환경에 따라 약 1 bit/s/Hz에서 4.7 bit/s/Hz의 주파수 효율을 제공할 수 있다.

Keywords

References

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