전자공학회논문지 IE

The Institute of Electronics and Information Engineers (대한전자공학회)
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Feedback Interference Cancellation System of RF Relay Utilizing the LMS Algorithm

LMS 알고리즘을 이용한 RF 중계기의 궤환 간섭신호 제거 시스템(Interference Cancellation System)

  • Kim, Min-Soo (Development PMO of KHP MEP, Agency of Defense Development) ;
  • Ahn, Sung-Soo (Dept. of Information Communication, Myongji College)
  • 김민수 (국방과학연구소 KHP MEP 개발단) ;
  • 안성수 (명지전문대학 정보통신과)
  • Published : 2008.03.25
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Abstract

This paper presents a new interference cancellation method to remove the oscillation due to feedback signal of RF relay. In this paper, we estimate the feedback signal using to LMS(Least Mean Square) algorithm and remove the interference through attenuation signal arbitrary corresponding to feedback signal. From the various performance analysis for various doppler effects, a proposed method prevents from oscillation using -30dB attenuation signal as a cancellation value of feedback signal.

본 논문은 RF 중계기에서 발생되는 궤환 신호로 인한 발진현상을 제거하는 간섭제거 방법을 제시한다. 본 논문에서는 LMS(Least Mean Square) 알고리즘을 이용하여 궤환 신호를 추정하고, 그에 상응하는 감쇄신호를 만들어 간섭을 제거하도록 하였다. 본 제안 방법을 이용하여 도플러(Doppler) 주파수를 변화시키면서 성능시험을 수행한 결과 궤환 신호를 상쇄시키는 -30dB의 감쇄신호를 발생시켜 발진을 방지할 수 있었다.

Keywords

References

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