Enhancement Accuracy for Indoor Positioning System on Non-Line of Sight Channel using Visible Light Communications

The Visible Light Communication (VLC) which uses Light Emitting Diode (LED) as a transmitter, not only functions for lighting and communication, but can determine the position of an object. The VLC system has higher accuracy compared to the Global Positioning System (GPS) system which uses satellite signals to obtain the coordinates of objects on earth. The VLC system can detect the position of objects of a smaller size. The Received Signal Strength (RSS) method can be used to determine the location of the object coordinates. This study has compared the results of the positioning error and accuracy values in three scenarios with different transmitter coordinates and using the Line of Sight (LOS) and Non-Line of Sight (NLOS) transmission channels. Using extensive simulation, we obtain that three scenarios through the LOS channel yields an average minimum positioning error value of 7.62E-16 meters with an accuracy of 99%. The three scenarios used in the NLOS channel have an average minimum positioning error value of 0.20 meters in the third scenario with an accuracy value of 99.42%. The simulation results show that the position of the transmitter coordinates affects the positioning error value and the accuracy value. The coordinates of the transmitter that have the highest accuracy value are (2.25,2,3), (-2,2.25,3), (0.25,2.25,3).