An Indoor Visible Light Positioning System for Multi-Cell Networks

Indoor positioning systems based on visible light communication (VLC) using white light-emitting diodes (WLEDs) have been widely studied in the literature. In this paper, we present an indoor visible-light (VLP) system red–green–blue (RGB) LEDs and a frequency division multiplexing (FDM) scheme. This combines functions of FDM scheme at transmitters (RGB LEDs) received signal strength (RSS) technique to estimate receiver position. The contribution work is two-fold. First, new VLP with RGB proposed for multi-cell network. Here, allow exploitation chromatic space transmit information. addition, VLC leverages responsivity single photodiode estimating signals lighting channels. A second derivation expression calculate optical power by each incident light. To end, consider channel model that includes both line-of-sight (LOS) non-line-of-sight (NLOS) components. fast Fourier transform (FFT) estimates powers frequencies signal. uses these RSS-based localization application Euclidean distances LED Subsequently, receiver’s location estimated positions via trilateration algorithm. Finally, Monte Carlo simulations are performed evaluate error performance scenario. results show high accuracy different color points. average all points was less than 2.2 cm. These suggest analyzed could be used scenarios where balance or luminaire planning also goals.