[1] [1] Fu Xinglong. The design and research of deep-space optical communication PPM modulation system[D]. Changchun: Changchun University of Science and Technology, 2013: 7-9.

[2] [2] Qin Ling. Design of MPPM in atmospheric laser communication[D]. Xi′an: Xi′an University of Technology, 2010: 21-30.

[3] [3] Fan Yangyu, Bai Bo, Huang Aiping, et al.. Pulse-position-width modulation scheme in wireless optical communication system[J]. Chinese J Lasers, 2008, 35(12): 1883-1887.

[4] [4] Leng Jiaofeng, Hao Shiqi, Lü Xuguang, et al.. Study on bit-symbol mapping method of MPPM and system performance based on low density parity check codes[J]. Acta Optica Sinica, 2012, 32(4): 0406001.

[5] [5] Wang Yan, Li Hongzuo, Zhang Meng, et al.. Research of pulse position modulation modulation characteristics of fiber laser in space optical communications[J]. Chinese J Lasers, 2015, 42(8): 0805001.

[6] [6] Wu Jili, Zhao Shanghong, Xu Jie, et al.. Study of capacity of coherent pulse-position modulation channel and maximization of information transmitting rate[J]. Acta Optica Sinica, 2008, 28(4): 643-647.

[7] [7] Ren Xin, Li Hongzuo, Wang Yan, et al.. Effect for modulation rate of pulsed fiber laser on pulse position modulation[J]. Acta Optica Sinica, 2014, 34(7): 0706002.

[8] [8] Liu X, Wood T H, Tkach R W, et al.. Demonstration of record sensitivities in optically preamplified receivers by combining PDM-QPSK and M-ary pulse-position modulation[J]. Journal of Lightwave Technology, 2012, 30(4): 406-413.

[9] [9] Li Bo, Wu Guiling, Su Feiran, et al.. Analysis and experimental study on phase-encoded photonic analog-to-digital conversion based on phase modulator[J]. Chinese J Lasers, 2015, 42(5): 0505002.

[10] [10] Rouissat M, Borsali R A. Differential two-pulses position modulation for synchronized wireless optical communications[M]. Springer Berlin Heidelberg: Computer Networks, 2013, 370: 252-257.

[11] [11] Stevens M L, Boroson D M. A simple delay-line 4-PPM demodulator with near-optimum performance[J]. Optics Express, 2012, 20(5): 5270-5280.

[12] [12] Selmy Hossam, Shalaby Hossam M H, Kawasaki Z. Performance analysis of gradual multi-pulse pulse-position modulation in deep-space optical communications[J]. Optical Communications and Networking, 2012, 4(10): 812-820.

[13] [13] Jiang Huilin, Tong Shoufeng. The technologies and system of space laser communication[M]. Beijing: National Defense Industry Press, 2010: 9-21.

[14] [14] Li Hao. Research on the performance of SCPPM coding in deep-space optical communication[D]. Harbin: Harbin Institute of Technology, 2012: 16-25.