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High power white LEDs are expected to replace the existing lighting technologies in near future which are also suggested for Visible Light Communication (VLC). The authors proposed an algorithm for high precision indoor positioning using lighting LEDs, VLC and image sensors. In the proposed algorithm, four LEDs transmitted their three-dimensional coordinate information which were received and demodulated by two image sensors near the unknown position. The unknown position was then calculated from the geometrical relations of the LED images created on the image sensors. They described the algorithm in details. Simulation of the proposed algorithm was done and presented in this paper.
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