[1] S. M. Haas, J. H. Shapiro, V. Tarokh. Space-time codes for wireless optical communications［J］. EURASIP J. Appl. Signal Process, 2002, 3(18): 1～11

[2] S. M. Navidpour, M. Uysal, M. Kavehrad. BER performance of free-space optical transmission with spatial diversity ［J］. IEEE Trans.Wireless Commun., 2007, 6(8): 2813～2819

[3] S. G. Wilson, M. Brandt-Pearce, Q. Cao et al.. Free-space optical MIMO transmission with Q-ary PPM［J］. IEEE Trans. Commun., 2005, 53(8): 1402～1412

[4] M. K. Simon, V. Vilnrotter. Alamouti-type space-time coding for free-space optical communication with direct detection［J］. IEEE Trans. Wireless Commun., 2005, 4(1): 35～39

[5] Wang HuiQin, Ke Xizheng, Zhao Li. Based on orthogonal space-time block coding MIMO free space optical communication［J］.Scientia Sinica Informations, 2009, 39(8): 896～902

[6] Xu Jianwu, Wang Hongxing, Hu Hao et al.. Encoding and decoding method of orthogonal space time block code in free space optical communication systems ［J］. Chinese J. Lasers, 2012, 39(1): 0105004

[7] Wu Pengfei, Ke Xizheng, Liang Wei. A modified blind multi-user detection algorithm for wireless optical code division multiple access systems [J]. Acta Optica Sinica, 2012, 32(2): 0206005

[8] Ke Xizheng, Xie Mengqi, Gao Haitao et al.. Free space optical communication based on space-time trellis coding［J］. Infrared and Laser Engineering, 2012, 41(4): 1022～1027

[9] Wang Huiqing, Ke Xizheng. Free space optical communication based on vertical bell labs layered space-time ［J］. Chinese J. Lasers, 2008, 35(6): 874～878

[10] Zhao Guhao, Zhao Shanghong, Li Yongjun et al.. Free space optical multiple-input multiple-output communication based on intensity superposition code［J］. Acta Optica Sinica, 2011, 31(7): 0706002

[11] V.Tarokh, H. Jafarkhani. A differential detection scheme for transmit diversity ［J］ . IEEE J. Sel. Areas Commun., 2000, 18(7): 1169～1174

[12] B. L. Huges. Differential space-time modulation ［J］. IEEE. Trans. Inform. Theory, 2000, 46(7): 2567～2578

[13] B. M. Hochwald, W. Sweldens. Differenctial unitary space-time modulation ［J］. IEEE Trans. Commun., 2000, 48(12): 2041～2052

[14] Chadi Abou-Rjeily. Orthogonal space-time block codes for binary pulse position modulation ［J］. IEEE. Trans. Commun., 2009, 57(3): 602～605

[15] Atomic Energy Council. Difference Space-Time Coding Method［P］. China Patent: : 200910134688.1, [2009-9-9]

[16] N. Letzepis, I. Holl, W. Cowley. The Gaussian free space optical MIMO channel with Q-ary pulse position modulation ［J］. IEEE Trans. Wireless Commun., 2008, 7(5): 1744～1753

[17] Murat Uysal, Meng Yu. Error rate performance analysis of coded free-space optical links over Gamma-Gamma atmospheric turbulence channels ［J］. IEEE Trans. Wireless Commun., 2006, 5(6): 1229～1233

[18] Zixiong Wang, Wende Zhong, Chinlon Lin. Performance comparison of different modulation formats over free-space optical (FSO) turbulence links with space diversity reception technique［J］. IEEE Photon. Journal, 2009, 1(6): 277～285