[1] M Toyoshima. Recent trends in space laser communications for small satellites and constellations. Journal of Lightwave Technology, 39, 693-699(2021).

[2] M A Khalighi, M Uysal. Survey on free space optical communication: A communication theory perspective. IEEE Communications Surveys & Tutorials, 16, 2231-2258(2014).

[3] S J Gao, J B Wu, Y K Liu, et al. Development status and trend of micro-satellite laser communication systems. Chinese Optics, 13, 1171-1181(2020).

[4] K Kikuchi. Fundamentals of coherent optical fiber communications. Journal of Lightwave Technology, 34, 157-179(2016).

[5] [5] Gregy M, Heine F, Kämpfner H, et al. Coherent intersatellite satelliteground laser links[C]SPIE, 2011, 7923: 792303.

[6] C Yu, T S Wang, Y Zhang, et al. Experimental research on transmission performance on OAM beam and Gaussian beam in atmospheric turbulence channel. Infrared and Laser Engineering, 50, 20200400(2021).

[7] B Y Li, Y S Feng, Y J Teng, et al. Scintillation suppression along 12.7 km space laser communication horizontal path. Optics and Precision Engineering, 30, 545-554(2022).

[8] [8] rews L C, Phillips R L. Laser Beam Propagation Through Rom Media[M]. US: SPIE Press, 2005.

[9] W Liu, J N Xu, D R Jin, et al. Research on aberration correction method of coherent optical communication based on CNN-SPGD algorithm. Optics and Precision Engineering, 30, 743-754(2022).

[10] J Sun, P M Huang, Z S Yao. Performance of satellite-to-ground laser communications under the influence of atmospheric turbulence and platform micro-vibration. Laser & Optoelectronics Progress, 58, 0301003(2021).

[11] Y Zheng, Y Piao. Research on the influence of polarization aberration on heterodyne efficiency in space coherent laser communication system. Current Optics and Photonics, 6, 23-31(2022).

[12] M Li, Y Guo, X Wang, et al. Researching pointing error effect on laser linewidth tolerance in space coherent optical communication systems. Optics Express, 30, 5769-5787(2022).

[13] [13] Jokhakar J D, Sripati U, Kulkarni M. Perfmance of QPSK modulation f FSO geosynchronous satellite communication link under atmospheric turbulence[C]IEEE, 2013: 15.

[14] X Y Kong, Z X Ke, Y Yang. Bit error rate of laser linewidth in spatial coherent optical communication link. Laser & Optoelectronics Progress, 55, 040603(2018).

[15] Y Li, M Li, J C Ding, et al. Performance of OOK, 2 PSK, QPSK modulation format in downlink of ground-to-satellite laser communication under the fluctuation of atmosphere. Applied Mechanics and Materials, 411, 753-756(2013).

[16] J Y Ren, H Y Sun, Y Z Zhao, et al. Light intensity and spatial coherence characteristics of laser coherent detection in a turbulent atmosphere. Chinese Optics, 13, 728-736(2020).

[17] R Z Rao. Analysis and prospect of modern atmospheric optics and its applications in optoelectronic engineering (Invited). Infrared and Laser Engineering, 51, 20210818(2022).

[18] [18] Munier F, Alpman E, Eriksson T, et al. Estimation of phase noise f QPSK modulation over AWGN channels[C]Proc GigaHertz 2003 Symp, 2003: 15.

[19] T Pfau, S Hoffmann, R Noe. Hardware-efficient coherent digital receiver concept with feedforward carrier recovery for M-QAM constellations. Journal of Lightwave Technology, 27, 989-999(2009).

[20] [20] Agrawal G P. Optical Receivers[M]. Berlin: Springer, 2002.

[21] M T Xie, J H Li, Z Y Xu, et al. Performance analysis for modulating retro-reflector FSO communications in weak turbulent atmosphere on slant path. Acta Optica Sinica, 41, 1801002(2021).

[22] [22] Good R E, Bel R R, Murphy E A, et al. Atmospheric models of optical turbulence[C]SPIE, 1988, 928: 165186.

[23] M P Cagigal, V F Canales. Speckle statistics in partially corrected wave fronts. Optics Letters, 23, 1072-1074(1998).

[24] [24] Ziemer R E, Tranter W H. Principles of Communications[M]. US: John Wiley & Sons Inc Press, 2015.

[25] J Ding, M Li, M Tang, et al. BER performance of MSK in ground-to-satellite uplink optical communication under the influence of atmospheric turbulence and detector noise. Optics Letters, 38, 3488-3491(2013).