Audio Transmission and Comparative Analysis of Different LED for Visible Light Communication

Abstract—Visible Light Communication (VLC) is an emerging technology which uses light source LEDs to transmit data. VLC uses 400 to 800 THz (780nm to 375nm) of frequency /wavelength. The comparison between different colors of LED was done by varying distance between the LEDs and Photo diode. The result from different LEDs were quite comparable to each other as wavelength varies with the variable distance between source and receiver. Results were compared in terms of voltage at receiver photo diode and waveform at oscilloscope for different color of LEDs. VLC was used for transmission of composite video signal.

Keywords—Visible Light Communication (VLC), Light EmittingDiode (LED), Photodiode, Composite video

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