Research progress of space-time code in wireless optical communications (Ⅱ)

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.