Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Sequential Least Square Channel Estimation in OFDM Systems

OFDM 시스템에서의 Sequential Least Squares 채널 추정 방식

  • 고은석 (연세대학교 전기ㆍ컴퓨터 공학과 정보통신 연구실) ;
  • 박병준 (연세대학교 전기ㆍ컴퓨터 공학과) ;
  • 천현수 (연세대학교 전기ㆍ컴퓨터 공학과) ;
  • 강창언 (연세대학교 전기ㆍ컴퓨터 공학과) ;
  • 홍대식 (연세대학교 전기ㆍ컴퓨터 공학과)
  • Published : 2000.06.01
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Abstract

The use of multi-level modulation scheme in the wireless LAN(Local Area Networks) system requires an accurate channel estimation. In this paper, we present sequential least squares(LS) channel estimation scheme based on decision-directed channel tracking scheme. The proposed scheme improves the performance of the conventional LS estimator for wireless LAN. In addition, its structure is suitable for the high-rate wireless LAN. Simulation results show that the proposed scheme achieves about IdB Packet Error Rate(PER) gain compared to the LS scheme in a frequency selective channel.

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