Abstract
A LED visible light communication system is proposed based on frequency division multiplexing (FDM) technique. Which can transmit analog and digital signals by different channels with a single LED. The main idea of this system is to modulate above two signals with different frequency carriers, and then add them together through an adder to finally drive a LED. The receiving modulated light signals is amplified, filtered, reshaped, and finally demodulated to restore the original input signal.
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