한국방송∙미디어공학회:학술대회논문집 (Proceedings of the Korean Society of Broadcast Engineers Conference)

한국방송∙미디어공학회 (The Korean Institute of Broadcast and Media Engineers)
권호 표지

A Study on Adaptive Channel Estimator for improvement of DVB-T receiving performance

  • 유창성 (경원대학교 전파공학과) ;
  • 손원 (경원대학교 전파공학과)
  • You Changsung (Department of radio engineering, Kyung Hee University) ;
  • Sohn Won (Department of radio engineering, Kyung Hee University)
  • 발행 : 2003.11.01
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초록

In this paper an adaptive channel estimator is proposed and investigated which improves the receiving performance for the DVB-T system. A conventional estimator for the system consists of a two-dimensional Wiener filter which is implemented as a cascade of one-dimensional filters, and the filter is operating with the filter coefficients set which is selected from the four different sets according to the channel environment. Our proposed estimator uses the filter coefficients which is interpolated by the two closest coefficients sets. The proposed scheme shows an improvement of 5 to 10dB in SNR compared to the conventional scheme.

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