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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Cell Searching and DoA Estimation Methods for a Mobile Relay Station with a Uniform Circular Array

원형 등간격 어레이를 갖는 이동 릴레이의 셀 탐색과 입사각 추정기법

  • Ko, Yo-Han (School of Electrical & Electronic Engineering, Chung-Ang University) ;
  • Kim, Yeong-Jun (School of Electrical & Electronic Engineering, Chung-Ang University) ;
  • Yoo, Hyun-Il (School of Electrical & Electronic Engineering, Chung-Ang University) ;
  • Cho, Yong-Soo (School of Electrical & Electronic Engineering, Chung-Ang University)
  • 고요한 (중앙대학교 전자전기공학부) ;
  • 김영준 (중앙대학교 전자전기공학부) ;
  • 유현일 (중앙대학교 전자전기공학부) ;
  • 조용수 (중앙대학교 전자전기공학부)
  • Published : 2009.09.30
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Abstract

In this paper, joint methods of cell searching and Direction-of-Arrival (DoA) estimation for a mobile relay station with a uniform circular array are proposed. The proposed joint estimation method for the mobile relay station is robust even when there exist symbol timing offsets between the signals received from adjacent base stations. Also, the proposed joint estimation method can reduce computational complexity and processing time, compared with the case where cell searching and DoA estimation are performed separately. Performances of the proposed method are evaluated by computer simulation under Mobile WiMAX environment.

본 논문에서는 원형 등간격 어레이를 갖는 이동 릴레이를 위한 셀 탐색과 입사각 동시 추정기법을 제안한다. 제안된 셀 탐색과 입사각의 동시 추정기법은 인접 기지국에서 이동 릴레이로 수신되는 신호간에 심볼 타이밍 옵셋이 존재하는 경우에도 강건한 특성을 갖고, 셀 탐색과 입사각을 각각 독립적으로 추정하는 경우에 비하여 계산량과 수행시간을 감소시킬 수 있다. 제안된 동시 추정기법의 성능을 Mobile WiMAX 환경 하에서 모의실험을 통하여 검증한다.

Keywords

References

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