2.4 Gbps Real-Time Visible Light Communication System Based on Blue Laser Diode

Abstract

In this paper, a real-time visible light communication (VLC) based on blue laser diode is implemented on field programmable gate array (FPGA) platform. To reduce requirements for signal processing speed, we propose a parallel scheme for modulation and demodulation with simple hardware implementation and low performance loss. Finally, we successfully constructed a VLC system prototype with 600 MHz transmission bandwidth and 2.4 Gbps communication rate over 1 m link distance. Actual measurements shows that $10 -^{5}$ magnitude bit error rate (BER) is achieved without forward error correction (FEC), which demonstrates excellent performance in reported single-source VLC system.