[1] Chen Lin, Cao Zizheng, Dong Ze, et al.. An experimental system of direct-detection optical OFDM transmission system［J］. Chinese J Lasers, 2009, 36(3): 554-557.

[2] Wang Jing, Cao Zizheng, Zhou Hui, et al.. A wavelength division multiplexing radio-over-fiber system with 58 GHz optical orthogonal frequency division multiplexing millimeter-wave signal［J］. Acta Optica Sinica, 2010, 30(5): 1274-1278.

[3] N E Jolley, H Kee, R Rickard, et al.. Generation and propagation of a 1550 nm 10 Gbit/s optical orthogonal frequency division multiplexed signal over 1000 m of multimode fibre using a directly modulated DFB［C］. OFC/NFOEC 2005, 2005. 319-321.

[4] Xia Minmin, Dong Ze, Cao Zizheng, et al.. Performance comparison of 40 GHz optical millimeter wave with OFDM signal generated by an optical phase modulator and an optical intensity modulator［J］. Acta Optica Sinica, 2010, 30(6): 1586-1591.

[5] Armstrong Jean. OFDM for optical communications［J］. J Lightwave Technol, 2009, 27(3): 189-204.

[6] Li Xinying, Hou Chunning, Zhang Junwen, et al.. IQ imbalance in optical DD-OFDM back-to-back and transmission systems［J］. Opto-Electronic Engineering, 2010, 37(3): 66-71.

[7] M R H Mondal, K R Oanta, J Armstrong. Performance of two dimensional asymmetrically clipped optical OFDM ［C］. IEEE Globecom 2010 Workshop on Optical Wireless Communications, 2010. 955-999.

[8] Jean Armstrong, J C S Brendon. Comparison of asymmetrically clipped optical OFDM and DC-biased optical OFDM in AWGN［J］. IEEE Commun. Lett, 2008, 12(5): 343-345.

[9] Wang Xin, Chen Lin, Cao Zizheng. Influence of modulation depth on optical subcarrier OFDM system［J］. Acta Optica Sinica, 2011, 31(5): 0506002.

[10] Qi Yang, Yan Tang, Yiran Ma, et al.. Experimental demonstration and numerical simulation of 107-Gb/s high spectral efficiency coherent optical OFDM［J］. J. Lightwave Technol., 2009, 27(3): 168-176.

[11] Mei Jiawei, Xiao Xiaosheng, Xu Mingrui, et al.. Wavelength-swept fiber laser based on dispersion tuning and its application on the demodulation of fiber Bragg grating［J］. Acta Optica Sinica, 2012, 32(11): 1114003.

[12] T Jiang, Y Imai. An overview: peak-to-average power ratio reduction techniques for OFDM signals［J］. IEEE Trans Broadcasting, 2008, 54(2): 257-268.

[13] Shangkang Deng, Maochao Lin. OFDM PAPR reduction using clipping with distortion control［C］. International Conference on Communications, 2005. 2563-2567.

[14] Chen Hongxian, Chen Lin, Yu Jianjun, et al.. Experimental investigation for 60 GHz radio-over-fiber system employing orthogonal frequency-division multiplexing format based on companding transform［J］. Acta Optica Sinica, 2012, 32(3): 0306002.

[15] Jiangnan Xiao, Jianjun Yu, Xinying Li, et al.. Hadamard transform combined with companding transform technique for PAPR reduction in an optical direct-detection OFDM system［J］. J Opt Commun Networking, 2012, 4(10): 709-714.

[16] Kim Jacwoon, Shin Yoan. An effective clipping companding scheme for PAPR reduction of OFDM signal［C］. IEEE International Conference on Communications, 2008. 668-672.

[17] Goebel Bernhard, Hellerbrand Stephan, Haufe Norman, et al.. PAPR reduction techniques for coherent optical OFDM transmission ［C］. International Conference on Transparent Optical Networks, 2009. 36-39.

[18] Yang Pinlu, Hu Aiqun. Piecewise-linear companding transform for peak-to-average power ratio reduction of OFDM signals［J］. J Communications, 2011, 32(8): 1-7.

[19] Xue Shichun, Hou Jia. A quasi-optimum PAPR coding for OFDM system［J］. Communications Technology, 2008, 41(12): 218-220.

[20] S K Brian, L J Douglas. An active-set approach for OFDM PAR reduction via tone reservation［J］. IEEE Trans Signal Processing, 2004, 52(2): 495-504.

[21] Qiu Shaofeng, Si Yanan, Chen Peng. Reserved subcarrier for PAPR reduction in optical OFDM systems［J］. Study on Optical Communications, 2011, 37(1): 9-11.

[22] B S Krongold, D L Jones. PAR reduction in OFDM via active constellation extension［J］. IEEE Trans Broadcasting, 2003, 49(3): 258-268.

[23] O J Kwon, Y H Ha. Multi-carrier PAP reduction method using sub-optimal PTS with threshold［J］. IEEE Trans Broadcasting, 2003, 49(2): 232-236.

[24] Yi Dan, Luo Renze, Ge Yonghua, et al.. Comparison of PTS algorithms for PAPR reduction［J］. Communications Technology, 2011, 44(6): 38-42.

[25] Wang Jinxiang, Wu Xinchun, Mao Zhigang, et al.. Low complexity PTS scheme for PAPR reduction of OFDM signals［J］. J Xidian University, 2010, 37(2): 326-333.

[26] Zhu Xiaodong, Zhu Guangxi, Lin Pei. A scheme based on linear transformation to reduce PAPR in the OFDM systems ［J］. Computer Engineering & Science, 2009, 31(7): 109-111.

[27] Thanh Nguyen Trung, L Lampe. On trellis shaping for PAR reduction in OFDM systems ［J］. IEEE Trans Commun, 2007, 55(9): 1678-1682.

[28] Stéphane Y Le Goff, Boon Kien Khoo, Charalampos C Tsimenidis, et al.. A novel selected mapping technique for PAPR reduction in OFDM systems ［J］. IEEE Trans Commun., 2008, 56(11): 1775-1779.

[29] Chen Lin, Fang Yong. A new scheme for PAPR reduction using quasi-cyclic LDPC code and SLM［J］. Signal Processing, 2012, 28(9): 1341-1345.

[30] Hu Dengpeng, Zhang Eryang. PAPR reduction for OFDM system with dummy subcarrier and its low complexity algorithm［J］. Signal Processing, 2010, 26(3): 394-399