[1] Fidler F, Knapek M, Horwath J, et al. Optical communication for high-altitude platforms[J]. IEEE Journal of Selected Topicsin Quantum Electronics, 2010, 16(5): 1-13.
[2] Wang Xiang, Zhao Shanghong, Li Yongjun, et al. Effect of high altitude platforms position instability on performance of PPM on inter-platforms optical links [J]. Infrared and Laser Engineering, 2013, 42(11): 3122-3126. (in Chinese)
[4] Aggarwal M, Garg P, Puri P. Exact capacity of amplify-and-forward relayed optical wireless communicationsystems[J]. IEEE Photon Technol Lett, 2015, 27(8): 903-906.
[5] Kazemlou S, Hranilovic S, Kumar S. All-optical multi-hop free-space optical communication systems[J]. J Lightw Technol, 2011, 29(18): 2663-2669.
[6] Bayaki E, Michalopoulos D S, Schober R. EDFA-based all-optical relaying in free-space optical systems [J]. IEEE Trans Commun, 2012, 60(12): 3797-3897.
[7] Kashani M A, Rad M M, Safari M, et al. All-optical amplify-and-forward relaying system for atmospheric channels[J]. IEEE Commun Lett, 2012, 16(10): 1684-1687.
[8] Wang Xiang, Zhao Shanghong, Shi Lei, et al. Performance analysis of high altitude platform multi-hop optical communication with variable gain relay [J]. Chinese J Lasers, 2013, 40(10): 1-5. (in Chinese)
[9] Han Liqiang, You Yahui. Performance of free space optical communication with combined effects from atmospheric turbulence and pointing errors[J]. Acta Optica Sinica, 2014, 34(11): 1-6. (in Chinese)
[10] Ke Xizheng, Deng Lijun. Wireless Optical Communications [M]. Beijing: Science Press, 2016. (in Chinese)
[11] Li Yuanping Zhu Yong, Xiang Peng, et al. Digital Optical Communications[M]. Beijing: Publishing House of Electronics Industry, 2011. (in Chinese)
[12] Wu Chongqing. Introduction to Optical Communication [M]. Bejing: Tsinghua University Press, 2008. (in Chinese)
