可见光通信是通过驱动电路将电信号转换成光信号并通过LED 发射出去，接收端通过光检测设备接收光信号，并提取其中有用的信号分量，从而实现通信。
研究OFDM和MIMO的关键技术，并针对室内可见光通信系统提出合适的MIMO-OFDM 方案。(isible light communication is through the drive circuit converts electrical signals into light signals and transmitted through LED, the receiving end through the optical detection device receives the light signal, and extract the useful signal component, so as to achieve communication.
The key technologies of OFDM and MIMO are studied, and an appropriate MIMO-OFDM scheme is proposed for indoor visible light communication systems.)