VLC（可见光通信）是一种新兴的无线光通信技术，它兼具照明和通信，具有多项优势和广阔的应用前景，已成为近年来研究的热点，结合MIMO（多输入多输出）等技术，可以大大提高其通信速率。研究人员已经提出了多种可用于 VLC的MIMO模型和技术，国际上基于MIMO的光通信系统的研究有多点漫射MIMO系统、像素化MIMO系统、非成像MIMO系统和成像MIMO系统。文章对这些系统进行了探讨，总结了各种光MIMO通信模型的优缺点，可作为深入理解和进一步研究可见光MIMO通信技术的基础。

Having the functions of both lighting and communications, Visible Light Communication (VLC) is an emerging wireless optical communication technology. Having many advantages and broad prospects of applications, it has become a research hotspot in recent years. Combining with MultipleInput MultipleOutput (MIMO) and other technologies, it can greatly increase the communication rate. Researchers have proposed multiple MIMO models and techniques applicable to VLC and there are multispotdiffuse MIMO, pixelated MIMO, nonimaging and imaging MIMO systems in the global researches on MIMObased optical communications systems. This paper investigates these systems and summarizes the advantages and disadvantages of various optical MIMO communication models, laying the foundation for deep understanding and further research on MIMObased VLC.