Visible Light Communication (VLC) attracts more and more interest since the combination of optical wireless communication with LED.LED array also becomes much popular in order to improve indoor lighting,so the VLC-MIMO based on LED array has arisen.The baseband processing of the VLC system is introduced in this paper,followed by two VLC-MIMO systems and the research progresses of Space-Time Block Code in VLC-MIMO.The physical channel processing and multiple antenna technology in long term evolution are discussed,and the future development of VLC system is predicted.