[1] [1] Wu Jian. Study and implement of underwater wireless optical communication system［D］. Xiamen: Xiamen University, 2014.

[2] [2] Duntley S Q. Light in the sea［J］. J Opt Soc Am, 1963, 53(2): 214-233.

[3] [3] Li Hongsheng, Yue Jun, Jin Jiucai. Review of the underwater communication technology using blue-green laser［J］. Journal of Telemetry, Tracking and Command, 2015, 36(5): 16-22.

[4] [4] Liu Min. Research on the transmission performance of LDPC and PPM in wireless communication system［D］. Xi′an: Xidian University, 2013.

[5] [5] Jia Kejun, Xue Jianbin, Peng Duo, et al. Modulation technologies under weak atmospheric turbulence channel［J］. Chinese J Lasers, 2009, 36(3): 569-573.

[6] [6] Hu Xiuhan, Zhou Tianhua, He Yan, et al. Design and analysis of underwater optical communication transceiver system based on digital signal processor［J］. Chinese J Lasers, 2013, 40(3): 0305003.

[7] [7] Li Haiyan, He Youjin, Ren Jiancun. Research on error-correcting code performance in laser communication with submarine simulative system［J］. Optical Communication Technology, 2010, 34(11): 49-51.

[8] [8] Lin Zhiguo, Bai Peng, Fan Wentong. et al. Research on a novel construction method of full rank QC-LDPC codes for optical communication systems［J］. Chinese J Lasers, 2015, 42(10): 1005003.

[9] [9] Guo Jianzhong, Tan Ying, Ai Yong. Performance analysis of LDPC coded pulse position modulation for deep-space optical communications［J］. Optical Communication Technology, 2007, 31(12): 57-59.

[10] [10] Yuan Ruijia. Study on efficient implementation of LDPC encoder and decoder ［D］. Xi′an: Xidian University, 2012.

[11] [11] Barua B, Majumder S P. Performance analysis of a LDPC coded multiple input/multiple output free-space optical system with Q-ary pulse-position modulation［C］. IEEE: International Conference on Electrical and Computer Engineering, 2010: 376-379.

[12] [12] Li Jinwei. The study on underwater laser communication system based on LDPC codes［D］. Qinhuangdao: Yanshan University, 2012.

[13] [13] Fan Yaqin. Research on channel coding and modulation technology of free space optical communication［D］. Harbin: Harbin Engineering University, 2013.

[14] [14] Chen Jiajie, Li Xiaofeng. Belief propagation decoding of low-density parity-check codes for atmospheric turbulent optical PPM communication systems［J］. Acta Photonica Sinica, 2009, 38(2): 405-409.

[15] [15] Hu Hongfei. Application research of LDPC in FSO communication［D］. Hangzhou: Zhejiang University of Technology, 2005.

[16] [16] Chen Chen. Research on iterative demodulating and decoding of LDPC-coded pulse-position modulation for space optical communication［D］. Wuhan: Wuhan Textile University, 2012.

[17] [17] Dolinar S, Divsalar D, Hamkins J. Capacity of pulse-position modulation (PPM) on Gaussian and Webb channels［C］. IEEE: TELSIKS ′09.9th International Conference, 2000: 314-317.

[18] [18] Javornik T, Jelovan I, Muhammad S S. Simplified soft value extraction for M-PPM-modulated signals in FSO systems［J］. AEU-International Journal of Electronics and Communications, 2009, 63(7): 595-599.

[19] [19] Ma Chunbo, Xia Baohui, Ao Jun, et al. Accurate decoding arithmetic of LDPC based on APD receivers［J］. Infrared and Laser Engineering, 2015, 44(3): 1028-1033.

[20] [20] Hu Hongfei, Zhang Jiangxin. Performance and analysis of LDPC codes in PPM channel of space optical communication［J］. Space Electronic Technology, 2006, 3(3): 20-25.

[21] [21] Zhang T. Efficient VLSI architectures for error-correcting coding［D］. Minnesota: University of Minnesota, 2002.