基于图像传感器的可见光MIMO通信系统

针对将图像传感器用于可见光MIMO通信时存在的图像矫正、收发通道对准及时钟同步问题，分析了影响数 据帧有效性的因素，提出了一种发射端图形结构与通道分布规则，给出了基于图像传感器的可见光MIMO通信系统时钟同步 方法，并以三星S24D590PL 液晶显示器作为光学MIMO发射端，IPHONE 6S 手机后摄像头传感器作为接收端搭建了实验系 统。实验结果表明，本方案能够实现接收图像的定位和矫正，并自适应计算出MIMO通道数量和各通道坐标，在发射帧率小 于接收帧率的条件下，能够恢复同步时钟和解码数据。

Visible Light MIMO Clock Synchronous Communication System Based on Image Sensor

For the problems of image rectification, transceiver channel alignment, clock synchronization when an image sensor is used for visible light MIMO communication, the factors affecting the validity of the data frame are analyzed. A graphical structure of transmitting end and a distribution rule of channel are presented. The synchronization method of visible light MIMO communication system based on image sensors is put forward, and an experimental system is set up using Samsung S24D590PL LCD monitor as optical MIMO transmitting end and rear camera sensor of IPHONE 6S as receiving end. The experimental results show that this program can achieve location and correction of the received image, and is adaptive to calculate the number of MIMO channels and the coordinates of each channel. Under the condition that the transmission frame rate is less than received frame rate, the synchronous clock can be recovered and the data can be decoded.