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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Blind Signal Subspace Channel Estimation technique for DS-CDMA DMB downlink

DS-CDMA DMB 하향링크에서의 블라인드 신호공간 채널추정 기법

  • 양완철 (한국항공대학교 통신정보공학과 위성통신 및 신호처리 연구실) ;
  • 이병섭 (한국항공대학교 통신정보공학과 위성통신 및 신호처리 연구실)
  • Published : 2004.09.01
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Abstract

In this paper, we propose a new channel estimation technique for long code DS-CDMA DMB down link system which estimate the channel response based on the signal space vector only, unlike the most conventional sub-space method relying on the orthogonal property of noise space vectors to the signal space vector. Because of this property of the proposed method, very optimum covariance matrix in its dimension can be used in subspace analysis channel estimation technique otherwise it is likely too large to be implemented practically.

본 논문에서는 신호공간과 장음공간과의 직교성을 이용하는 종래의 부분공간 방식과는 달리 신호공간만을 이용하여 채널응답을 추정해낼 수 있는 긴 코드 DSCDMA DMB 하향링크 시스템에서의 새로운 채널추정기법을 제안한다. 신호공간만을 이용하므로 제안된 기법은 종래의 부분공간 방식에서의 공분산 행렬 사이즈 문제를 해결할 수 있고 따라서 실제 구현 가능한 적정한 사이즈의 공분산 행렬로 부분공간 분석을 통한 채널추정기업에 사용될 수있다.

Keywords

References

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