中文摘要：

就传播性能上的更随机的大气的骚乱，更坏的指错误和高度有活力的连接的影响而言活动多重输入多重产量(MIMO ) 空间光学(FSO ) 通讯系统，这份报纸为活动平台建立一个隧道模型。把代码并且时间跳跃基于 Alamouti 时空的联合极端宽的乐队( TH-UWB )通讯，吗编码的新奇重复时空( RSTC )方法为活动 2 ??????????????????六?????隸????????????偓??????????????????????????????????????????????????？？

英文摘要：

Considering the influence of more random atmospheric turbulence, worse pointing errors and highly dynamic link on the transmission performance of mobile multiple-input multiple-output （MIMO） free space optics （FSO） communica- tion systems, this paper establishes a channel model for the mobile platform. Based on the combination of Alamouti space-time code and time hopping ultra-wide band （TH-UWB） communications, a novel repetition space-time coding （RSTC） method for mobile 2x2 free-space optical communications with pulse position modulation （PPM） is devel- oped. In particular, two decoding methods of equal gain combining （EGC） maximum likelihood detection （MLD） and correlation matrix detection （CMD） are derived. When a quasi-static fading and weak turbulence channel model are considered, simulation results show that whether the channel state information （CSI） is known or not, the coding sys- tem demonstrates more significant performance of the symbol error rate （SER） than the uncoding. In other words, transmitting diversity can be achieved while conveying the information only through the time delays of the modulated signals transmitted from different antennas. CMD has almost the same effect of signal combining with maximal ratio combining （MRC）. However, when the channel correlation increases, SER performance of the coding 2×2 system de- grades significantly.