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Indoor positioning system of 50 cm resolution based on LED  

Jung, Soo-Yong (광주과학기술원 정보통신공학과 초고속 디지털/광 통신 연구실)
Hann, S-Wook (한국광기술원 포토닉시스템 그룹)
Park, Chang-Soo (광주과학기술원 정보통신공학과 초고속 디지털/광 통신 연구실)
Publication Information
Journal of Satellite, Information and Communications / v.5, no.2, 2010 , pp. 69-74 More about this Journal
Abstract
In this paper, we present an indoor positioning system based on light emitting diode (LED). Because LED is a semiconductor light emitting device, we can easily switch and modulate electrical signals into lightwave signals at high speed using LEDs. We assigned unique 8-bit ID address to each LED lights. Photo diode receives data from 16-LED lights and takes correlation coefficient beteween received data and each LED-ID. Using correlation coefficient, proposed positioning system shows resolution of 50 cm in dimensions of $4\;m\;{\times}\;4\;m\;{\times}\;2\;m$.
Keywords
Light Emitting Diode; Visible light communication; Positioning system; Correlation; Ubiquitous;
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