Table 1 Indoor positioning system
From: New indoor navigation system for visually impaired people using visible light communication
| Â | Visible light communication | Wireless LAN | RFID |
|---|---|---|---|
Position accuracy | several meters | several meters to several hundred meters | several meters |
Quality | stable | dependence of noise, interference | dependence of noise, interference |
Measurement time | less than a second | several seconds | less than a second |
Recognition of building floors | possible | difficult | possible |
Measurement Device | visible light receiver | Wi-Fi transceiver | RFID reader |