[IEEE 2019 10th International Conference on Computing, Communication and Networking Technologies (ICCCNT) - Kanpur, India (2019.7.6-2019.7.8)] 2019 10th International Conference on Computing, Communication and Networking Technologies (ICCCNT) - Simplified Wavelength Division Multiplexing in Visible Light Communication by Using RGB LED as Frequency Selective Receiver

摘要： The field of Visible Light Communication (VLC) has gained impetus these days due to the huge potential it holds in the form of data rate, frequency reuse and line of sight technique detection. This paper presents a simple for Wavelength Division Multiplexing (WDM) in visible light its performance based on communication and evaluates practical implementation. The unique part of this system is that it is simple because it implements RGB LED itself as frequency selective receiver instead of photodetectors with optical filters. A quantitative analysis of the implemented system in the form of tables is presented in this paper. The results quantify the performance of RGB LED as a frequency selective receiver, in the form of cross talk between colors, and highlight the fact that proper software thresholding at receiver can allow simultaneous data transfer over different colored channels i.e. wavelength division multiplexing. As optical filters are not used for color separation and the LED itself is acting as the frequency selective receiver, the system is simple to implement. The functioning of RGB LED as a frequency selective receiver is explained with the help of semiconductor theory. The circuits for transmitter and receiver are also discussed in this paper along with hardware detail. The effect of hardware on data rate and other parameters is also discussed.