In order to realize the video image transmission and the excellent lighting\nfunction of the visible light communication system, a LED-based visible light\ncommunication method and system is proposed. Based on the field programmable\ngate array (FPGA) hardware, the RS channel coding is applied to\nthe visible light communication system. A pulse position decision algorithm is\nproposed, which is applied to the receiver of the visible light communication\nsystem to meet the error-free decision of the signal. The design of the system\nis based on the analog-to-digital conversion circuit, which provides a large\nsignal dynamic range for the pulse position decision algorithm, and designs\nthe LED driver based on the bias circuit to realize the fast broadband modulation\nof the signal. The test results show that the combined application of pulse\nposition decision algorithm and Reed-Solomon codec can reduce the error of\nsystem signal and meet the real-time and reliable transmission of signal. The\nsystem can display the received video in real time from the receiver, and the\nwhole system communication distance up to 5 m.
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