대한전자공학회논문지TC (Journal of the Institute of Electronics Engineers of Korea TC)

대한전자공학회 (The Institute of Electronics and Information Engineers)
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OFDM시스템을 위한 적응 문턱값 설정방식의 심볼동기화 알고리듬

A Symbol Synchronization Algorithm With an Adaptive Threshold Establishment Method For OFDM Systems

  • Song, Dong-Ho (Dept. of Electronic Engineering Kyungnam University) ;
  • Joo, Chang-Bok (Dept. of Electronic Engineering Kyungnam University)
  • 발행 : 2003.06.01
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초록

제안된 알고리듬은 채널 잡음전력에 따라 적응적으로 문턱값 레벨을 결정하는 적응 문턱값 설정방식을 사용하여 채널특성에 관계없이 항상 최적의 문턱값을 설정한다. 또한, 이것은 그 추정성능이 다중경로채널에서의 전력지연 프로파일 변동에 대해 덜 민감하도록 만드는 특별하게 설계된 훈련심볼을 사용한다. 그 결과, 제안된 기법의 추정성능은 채널특성 변동에 대해 영향을 적게 받는다.

The proposed algorithm can always set up the optimal threshold value regardless of channel characteristics using an adaptive threshold establishment method that determines the threshold level according to channel noise power, and then it uses the specially designed training symbols that can make the algorithm's estimation performance be less sensitive to power delay profile variation in a multipath channel. In result, the estimation performance of the proposed technique is less affected by channel characteristic variation.

키워드

참고문헌

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