Abstract: The wireless optical MIMO technology which combined antenna transmit diversity, receive diversity and channel coding diversity, significantly improved the channel capacity. The auther's research progress at layered space-time code was introduced, the relationship between error rate characteristics and transmitting/receiving antenna number, detection algorithm was analyzed, this paper compared the different coding scheme that including horizontally-layered space-time codes (H-BLSTC), threaded-layered space-time codes (T-BLSTC), diagonally-layered space-time codes (D-BLSTC) and vertical-layered space-time codes (V-BLSTC). Then, it's also analyse turbulence intensity inhibits effects due to different coding scheme and detection algorithm. Through the analysis of three kinds of layered space-time coding to get diagonally-layered space-time codes is own the best performance, followed by threaded-layered space-time codes, and at last is the horizontally-layered space-time codes.