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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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User-Body Shadowing Analysis Technique in Ship Environment Based on the Uniform Geometrical Theory of Diffraction

균일 회절 이론을 이용한 선박 환경에서의 단말기 사용자 쉐도잉 분석 기법

  • Kim, Chang-Hoe (Seoul National University Department of Electrical and Information) ;
  • Jung, Jae-Hoon (Seoul National University Department of Electrical and Information) ;
  • Lee, Seong Ro (Mokpo National University Department of Information & Electronics Engineering) ;
  • Kim, Seong-Cheol (Seoul National University Department of Electrical and Information)
  • Received : 2014.10.08
  • Accepted : 2014.11.17
  • Published : 2014.11.28
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Abstract

The Uniform Geometrical Theory of Diffraction(UTD) is an effective technique to analyze the radio wave by ray-based calculation of the diffraction coefficient and the reflection coefficient. In this paper, user body shadowing based on the UTD is investigated when the user is close to the mobile device. Two cases are introduced. One is that the user is calling with the mobile attached to the ear(Head Model). The other is that the mobile is located about 15cm away from the user's chest(Chest Model) Radiation Model and Scattering Model are applied to these cases presenting which model is applicable.

기하학적 균일 회절 이론(UTD)은 특정 주파수에서 장애물에 의해 전파가 불연속적인 특성을 가질 때, 전자기학적으로 접근하여 회절 계수와 반사 계수 등을 계산하여 전파를 분석하는 기법이다. 본 논문에서는 실내 무선 채널 환경에서 사용자가 단말기 주변에 있을 때, 사용자에 의한 쉐도잉(Shadowing) 효과를 기하학적 UTD을 통하여 분석하였다. 사용자가 통화를 하고 있는 상황(Head Model)과 가슴 앞쪽에 단말기를 위치하여 사용하는 상황(Chest Model)으로 나누고, 각각에 대하여 복사 모델(Radiation Model)과 산란 모델(Scattering Model)에 적용하여 비교 및 분석하였다.

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References

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