Robust Code Acquisition System in Rayleigh Fading Channel

Rayleigh 페이딩 채널에서 강인한 동기 획득 시스템

  • 장경운 (영남대학교 정보통신학과) ;
  • 김기채 (영남대하교 전자정보공학부) ;
  • 박용완 (영남대학교 정보통신공학과)
  • Published : 2000.08.01

Abstract

In this paper, we perform a performance analysis of serial acquisition scheme using AWGN rejection filter in Rayleigh fading channel and propose robust acquisition scheme using Reference filter, which is utilized to vary threshold at fading rate, in Rayleigh fading channel. AWGN rejection filter is utilized to evaluate running average for compensating channel gain. The JAKE model, which a channel model, is used for the analysis. The simulation result shows that the mean acquisition time of the proposed acquisition system is minimized than acquisition system using AWGN rejection filter and serial-search acquisition system.

이 논문은 Rayleigh 페이딩 채널환경에서 가산 백색 가우시안 잡음 제거 필터를 적용한 직렬 탐색 동기 획득 방식에 대한 성능을 분석하고, 임계치를 페이딩 정도에 따라 변화시킬 수 있도록 참조 필터를 추가하여 페이딩 환경에서 강인하게 동기 획득이 이루어지도록 하였다. 성능 분석을 위해 사용된 채널 모델은 JAKE 모델이며 성능분석 결과, 제안된 동기 획득 방식이 기존의 직렬 탐색동기 획득 방식과 수신된 신호에 대한 칩별 연속 평균을 구해 페이딩에 의한 감쇄요소를 보상하는 가산 백색 가우시안 잡음 제거 필터만을 적용한 동기 획득 방식보다 낮은 신호대잡음비에서 평균 동기 획득 시간이 줄어듬을 알 수 있었다.

Keywords

References

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