A voice transmission system based on visible light communication

In this paper, we present an analog voice transmission system based on Visible Light Communication (VLC). At the transmitter of the system, by the Voltage-Frequency (V-F) conversion circuit, the analog voice signal is transformed into the frequency signal, which is linear with the amplitude of the signals. At the receiver, the voice signal can be demodulated by the Frequency-Voltage (F-V) conversion circuit. Finally the test of the voice transmission system based on visible light communication is carried out, which shows that the input and output waveforms are consistent, the transmitted voice can be received without distortion. The test result shows that the design is correct and feasible.