High-Speed Indoor Visible Light Communication System using Red Laser Diodes

With the rapid development of wireless local area network (WLAN), the available spectrum resources are gradually decreasing. Visible light communication has received more and more attention. The paper introduces indoor visible light communication (VLC) channel estimation on the experimental platform. We have developed a point-to-point visible light communication platform with red laser diodes in the laboratory, and improved the power utilization by adjusting the sub-carrier bit power allocation. At the communication distance of 0.7 meters and with the bit error rate of 3.2x10
^-3
, the data transmission rate reaches 1.53 Gbps. Clear constellation diagrams from 8QAM to 256QAM are received.