Proceedings of the Korea Electromagnetic Engineering Society Conference (한국전자파학회:학술대회논문집)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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LOS and NLOS Path-loss Characteristics at 3.4, 5.3, and 6.4 ㎓ in an Urban Environment

3.4, 5.3, 6.4 ㎓ 대역 신호의 가시 및 비가시 구간에서의 경로손실 특성

  • 조한신 (연세대학교 전지전자공학과) ;
  • 박병성 (연세대학교 전지전자공학과) ;
  • 육종관 (연세대학교 전지전자공학과) ;
  • 박한규 (연세대학교 전지전자공학과) ;
  • 이정수 (SK텔레콤 네트웍 연구원)
  • Published : 2002.11.01
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Abstract

This paper presents the a measured path-loss characteristics in urban line-of-sight(LOS) and non line-of-sight(NLOS) environments for 3.4, 5.3, and 6.4 ㎓ band signals. A two-ray model is applied to analyse the path-loss characteristics in LOS areas. In LOS areas, an empirical break point, whose distance is shorter than a theorical break point, is founded. Further, a sudden power level drop occurs at a transition point from LOS region to NLOS area and different path-loss exponents are occured various cases. The power level drop due to comer loss and path-loss exponents both increase as the distance between the transmitter and the corner increases.

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