The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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A Hypothesis Test Approach to Template Selection for UWB Rake Receivers

가설검증 방식을 통한 UWB Rake 수신기의 기준신호 선택 기법

  • 이준용 (한동대학교 전산전자공학부) ;
  • 유성열 (한동대학교 전산전자공학부) ;
  • 윤성준 (한동대학교 전산전자공학부) ;
  • 하동헌 (한동대학교 전산전자공학부)
  • Published : 2006.02.01
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Abstract

Many application scenarios of ultra-wideband(UWB) radio assume non-line-of-sigit(non-LoS) signal propagations. Through-material propagation of UWB signal introduces a distortion of the waveform as well as attenuation, which will introduce a decrease of the correlation coefficient between the correlator template and the received signal. A hypothesis test approach to selection of the template waveform for UWB rake receivers is posed. Linde-Buzo-Gray(LBG) algorithm is used to select the candidate waveforms which are used to setup the hypothesis test. The performance of the algorithm is tested using a set of indoor non-LoS propagation measurement data.

초광대역(UWB) 통신시스템의 응용 시나리오는 많은 경우 비가시적(non-LoS) 환경에서의 응용을 가정하고 있다. UWB 신호가 매질을 투과하여 방사될 경우 신호의 왜곡현상이 발생하며, 이는 수신부 상관기의 기준신호와 수신된 신호와의 상관계수를 감소시켜 성능을 저하시키는 요인이 된다. 본 논문에서는 가설검증 방식을 이용한 UWB Rake 수신기의 기준신호 선택 기법을 소개한다. 가설을 세우기 위한 파형의 선택을 위해 벡터 양자화 기법인 Linde-Buzo-Gray(LBG) 알고리듬을 사용하였다. 개시된 알고리듬을 성능을 non-LoS 환경에서 측정된 데이터를 이용해 평가하였다.

Keywords

References

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