[1] [1] Pang Zhiyong, Piao Dazhi, Zou Chuanyun. Performance comparisons of several modulation schemes for optical wireless communication[J]. Journal of Guilin Institute of Electronic Technology, 2002, 22(5): 1～4

[2] [2] Zhang Jiangxin, Hu Hongfei. Soft demodulation & performance of PPM in free-space optical communications[J]. Optoelectronic Technology & Information, 2005, 18(4):42～46

[3] [3] Z. Ghassemlooy, A. R. Haye, N. L. Seed et al.. Digital pulse interval modulation for optical communications[J]. IEEE Communications Magazine, 1998, 36(12): 95～99

[4] [4] Fan Yangyu, R.J.Green. Comparison of pulse position modulation and pulse width modulation for application in optical communications[J]. Opt. Eng., 2007, 46(6): 1～8

[5] [5] Hu Zongmin, Tang Junxiong. Digital pulse interval modulation for atmospheric optical wireless communications[J]. Journal on Communications, 2005, 26(3): 75～79

[6] [6] Cheng Gang, Wang Hongxing, Sun Xiaoming et al.. Structure study of modulation waveforms in optical wireless communications[J]. Journal of Yantai University(Natural Science and Engineering Edition), 2007, 20(1): 31～34

[7] [7] Zhang Jinlong. Modulation analysis for outdoor applications of optical wireless communications[C]. Communication Technology Proceedings, 2000, 2: 1483～1487

[8] [8] Z. Ghassemlooy, N. M. Aldibbiat. Multilevel digital pulse interval modulation scheme for optical wireless communications[C]. Transparent Optical Networks, 2006, 3:149～153

[9] [9] Wang Jingyuan, Zhang Zhengxian. PPM in wireless infrared communication[J]. Telecommunication Technology, 2000, 5:81～84

[10] [10] Shu Shouheng, Yan Juanjuan, Zheng Zheng et al.. Beam propagation simulation of the turbulence channels in free-space laser communication[J]. Journal of Light Scattering, 2007 ,19(1):79～85

[11] [11] Zhang Tieyin, Wang Hongxin, Cheng Gang et al.. A novel fixed length digital pulse interval modulation for optical wireless communications[J]. Chinese J.Lasers, 2007, 34(12):1655～1659

[12] [12] Zhu Yinbin, Wang Hongxin, Zhang Lei et al.. Analysis of error performance for turbo coded digital pulse interval modulation under weak turbulence[J]. Chinese J.Lasers, 2007, 34(9):1245～1249