Journal of the Institute of Electronics Engineers of Korea SD (대한전자공학회논문지SD)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Analysis of Infrared Wireless Indoor Communication Link with a Source on the Wall

벽면에 광소스가 위치하는 경우의 실내 무선 광링크 분석

  • 지윤규 (이화대학교 전자공학과)
  • Published : 2000.02.01
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Abstract

Because the installation of the optical cables in rooms is difficult, we can terminate the optical cable at the main enterence and use infrared wireless communications in the room. In this paper, we calculate the impulse response of the infrared wireless communication link and the optical power penalty due to multipath effect up to the third reflections with the source on the sidewall. We can locate the optical sources on the sidewall without problem because of relative large power reflected from the ceiling and sidewalls once. And the optical power penalty due to multipath effect can be neglected at the speed of 2 Mb/s.

기존 건물의 실내에서 가입자 단말기까지 광케이블을 포설하기가 어렵기 때문에 실내의 주 출입구까지만 광케이블을 포설 종단하고 가입자 단말까지는 광무선 전송방식을 도입할 수 있다. 본 논문에서 광무선 송신기가 벽면에 위치할 경우 세 번 반사하는 경우까지 포함하는 임펄스응답을 구하고 이 계산된 임펄스응답을 사용하여 광전력 페널티를 구하였다. 벽면에 송신기가 위치하여도 한번 반사되어 수신되는 광전력이 크므로 실내 적용이 가능함을 알 수 있었다. 또한 2 Mb/s의 전송속도에서 광전력 페널티는 무시할 수 있을 정도로 적었다.

Keywords

References

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