한국전자파학회논문지 (The Journal of Korean Institute of Electromagnetic Engineering and Science)

  • 제20권7호
  • /
  • Pages.589-602
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  • 2009
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  • 1226-3133(pISSN)
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  • 2288-226X(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
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GSM과 DVB-H의 복합 단말에서 디지털 필터를 적용한 GSM 간섭 신호 제거 기법

Effective GSM Interference Cancelling Techniques Using Digital Filter for the Collocated GSM and DVB-H Terminal

  • 박평주 (한국항공대학교 통신공학과) ;
  • 박용운 (삼성전기중앙연구소) ;
  • 서명환 (한국항공대학교 통신공학과) ;
  • 이병섭 (한국항공대학교 통신공학과)
  • Park, Pyung-Joo (Information and Telecommunication Engineering, Korea Aerospace University) ;
  • Park, Yong-Woon (R&D Institute/WS Lab.(SoC), Samsung Electro-Mechanics Co., Ltd.) ;
  • Seo, Myung-Hwan (Information and Telecommunication Engineering, Korea Aerospace University) ;
  • Lee, Byung-Seub (Information and Telecommunication Engineering, Korea Aerospace University)
  • 발행 : 2009.07.31
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⟨ 이전 논문 다음 논문 ⟩

초록

DVB-H 수신기가 내장된 GSM 900 방식의 휴대전화 단말은 두 개의 통신 시스템이 공존하고 있어 GSM 신호의 간섭으로 인해 DVB 방송 신호의 수신 성능이 저하되는 현상이 발생한다. 본 논문에서는 GSM과 DVB-H 복합 단말에서 DVB-H 수신기로 간섭을 일으키는 GSM 신호를 제거하기 위해 DSP 기법을 이용한 디지털 필터를 적용하여 DVB-H 수신기의 성능을 높일 수 있는 시스템을 제안한다. DVB-H 수신기의 복조단에서 GSM 변조 선호와 OFDM 선호의 특성이 서로 다른 점을 이용한 잡음 제거 필터링 알고리즘으로 DVB 신호와 함께 유입된 GSM 신호의 간섭 성분을 제거함으로써 DVB 수신 성능을 크게 향상시킬 수 있다.

The phenomenon degrading reception performance of DVB broadcasting signal is caused by collocation of plural communication modules in the GSM-900 cellular phone with a built-in DVB-H receiver. This paper offers how to improve performance of the DVB-H receiver by applying digital filter that is using DSP techniques to cancel GSM signal interfering to the DVB-H receiver which is collocated in a single user's GSM terminal. In the demodulation part of the DVB-H receiver, the DVB reception performance can be greatly improved by removing interference components of GSM signal, which is flowed with DVB signal, to the noise cancellation filtering algorithm using difference of characteristics between GSM modulated signal and OFDM signal.

키워드

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