Fig. 1. LED radiation and PD reception sketch

Fig. 2. Normalized received light intensity distribution on horizontal range

Fig. 3. Positioning procedure of RSSI

Fig. 4. Wavelet denoise and cross-correlation detection test results. Waveforms of (a) sampled signal, (b) wavelet denoised signal, and (c) restored signal extracted by correlation method, respectively; frequency spectra of (d) sampled signal, (e) wavelet denoised signal, and (f) restored signal extracted by correlation method, respectively

Fig. 5. Two luminaire distribution modes in visible light positioning system. (a) Rectangular distribution mode; (b) triangular distribution mode

Fig. 6. District to be measured

Fig. 7. Largest horizontal measuring distance of two distribution modes. (a) Rectangular distribution mode; (b) triangular distribution mode

Fig. 8. Simulation result of rectangular distribution mode

Fig. 9. Simulation result of triangular distribution mode

Fig. 10. Simulation result of rectangular array positioning with SNR of 20 dB

Fig. 11. Simulation result of rectangular array positioning with SNR of 0 dB

Fig. 12. Positioning error tendency varied with SNR in triangular distribution

Fig. 13. Positioning error tendency varied with SNR in rectangular distribution