An Indoor Visible Light Positioning System Based on Optical Camera Communications

We experimentally demonstrate an indoor visible light positioning system based on optical camera communications, in which the transmitted coordinate data are spatially separated and demodulated by a camera. The receiver’s position is calculated based on the coordinates of light-emitting diodes in the real word and in the image. The experimental results show that the proposed system with under-sampled phase shift keying modulation offers an error free data transmission and mean positioning errors of 5.0 and 6.6 cm for <inline-formula> <tex-math notation="LaTeX">$h$ </tex-math></inline-formula> of 120 and 180 cm, respectively.

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