[1] [1] Antonio G Z, Carmen C V, Beatriz C V. Outage performance of MIMO FSO links over strong turbulence and misalignment fading channels[J]. Optics Express, 2011, 19(14): 13480-13496.

[2] [2] Kauri P, Jain V K, Kara S. Performance analysis of FSO array receivers in presence of atmospheric turbulence[J]. IEEE Photonics Technology Letters, 2014, 2(12): 1165-1168.

[3] [3] Zhang Jiankun, Li Ruijie, Dang Anhong. Experimental studies of phase fluctuations in free-space optical communications[C]. OSA Applications of Lasers for Sensing and Free Space Communications, 2015: LTh2D.3.

[4] [4] Belmonte A, Kahn J M. Sequential optimization of adaptive arrays in coherent laser communications[J]. Journal of Lightwave Technology, 2013, 31(31): 1383-1387.

[5] [5] Trinh P V, Dang N T, Thang T C, et al. Performance of all-optical amplify-and-forward WDM/FSO relaying systems over atmospheric dispersive turbulence channels[J]. Ieice Transactions on Communications, 2016, E99.B(6): 1255-1264.

[6] [6] Li Mi, Li Bowen, Song Yuejiang, et al. Investigation of Costas loop synchronization effect on BER performance of space uplink optical communication system with BPSK scheme[J]. IEEE Photonics Journal, 2015, 7(4): 1-9.

[7] [7] Heine F, Muhlnikel G, Zech H, et al. The European data relay system, high speed laser based data links[C]. IEEE Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC), 2014: 284-286.

[8] [8] O’Brien D, Turnbull R, Le Minh H, et al. High-speed optical wireless demonstrators: Conclusions and future directions[J]. Journal of Lightwave Technology, 2012, 30(13): 2181-2187.

[10] [10] Song Xuegui, Cheng J. Subcarrier intensity modulated optical wireless communications using no coherent and differentially coherent modulations[J]. Journal of Lightwave Technology, 2013, 31(12): 1906-1913.

[11] [11] Wang Z, Zhong W D, Yu C. Performance improvement of OOK free-space optical communication systems by coherent detection and dynamic decision threshold in atmospheric turbulence conditions[J]. IEEE Photonics Technology Letters, 2012, 24(22): 2035-2037.

[12] [12] Wang Z, Zhong W D, Yu C, et al. Performance improvement of on-off-keying free space optical transmission systems by a co propagating reference continuous wave light[J]. Optics Express, 2012, 20(8): 9284-9295.

[13] [13] Zhong W, Wang Z, Yu C. Performance enhancement techniques for free-space optical transmission systems[C]. Transparent Optical Networks (ICTON), 2013: 1-5.