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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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The Analysis on Positioning Error of Recognition Schemes of Pilot Signal in Indoor TDoA Positioning System using Visible Light Communication

가시광 무선 통신을 이용한 TDoA 기반 실내 측위 시스템에서 파일럿 신호 인식 방식에 따른 측위 성능 분석

  • 황준호 (숭실대학교 정보통신전자공학부 통신망 설계 및 분석 연구실) ;
  • 유명식 (숭실대학교 정보통신전자공학부 통신망 설계 및 분석 연구실)
  • Received : 2012.07.19
  • Accepted : 2012.09.04
  • Published : 2012.09.30
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Abstract

The visible light communication is considered as a next generation communication technology, when utilizes LED and PD for communication. Since it is easy to provide LOS communication environment along with cheap deployment cost, the positioning system based on VLC has been actively studied. However, the existing positioning system using VLC requires a complex computation and an additional deployment cost due to sensors for example. In this paper, we propose a new positioning system based on VLC which does not require additional complexity and the cost. In addition, the procedure for operating LED panels for positioning and the recognition schemes of pilot signal are proposed. The performance of recognition schemes of pilot signal is analyzed through the computer simulations.

가시광 무선 통신 기술은 LED와 PD를 이용한 차세대 무선 통신 기술로서, LOS 통신 채널 확보의 용이성과 저렴한 인프라 구축 비용의 장점을 토대로 실내 측위 시스템 개발에 활발한 연구가 진행되고 있다. 하지만 기존 가시광 무선 통신 기반 측위 시스템은 복잡한 측위 계산 및 별도의 센서 설치에 따른 구축 비용이 증가하는 문제가 발생하였다. 이에 본 논문에서는 실내 가시광 무선 통신 환경에 TDoA 측위 기법을 적용하여 별도의 장치 없이 측위 시스템 구축이 가능한 VLC-TDoA 시스템을 제안한다. 또한 측위 시스템 운용에 필요한 LED 패널 제어 절차 및 단말기의 파일럿 신호 인식 방법을 제안한다. 이와 더불어 모의실험을 토대로 VLC-TDoA 측위 시스템의 측위 가능성 및 파일럿 신호 인식 방법에 따른 측위 오차를 분석하였다.

Keywords

References

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