Tao Jiang and YiyanWu, "An overview: Peak-to-average power ratio reduction techniques for OFDM signals", IEEE Transaction on Broadcasting, Vol.54, No.2, pp.257-268, 2008.
 Y.C. Wang and Z.Q. Luo, "Optimized iterative clipping and filtering for PAPR reduction of OFDM signals", IEEE Transactions on Communications, Vol.59, No.1, pp.1-4, 2011.
 Robert J. Baxley, Chunming Zhao and G. Tong Zhou, "Constrained clipping for crest factor reduction in OFDM", IEEE Transaction on Broadcasting, Vol.52, No.4, pp.570-575, 2006.
 Maryam Sabbaghian, Yongjun Kwak, Besma Smida and Vahid Tarokh, "Near Shannon limit and low peak to average power ratio turbo block coded OFDM", IEEE Transactions on Communications, Vol.59, No.8, pp.2042-2045, 2011.
 R.W. Bauml, R.F.H. Fishcher and J.B. Huber, "Reducing the peak-to-average power ratio of multicarrier modulation by selected mapping", IET Electron. Lett., Vol.32, No.22, pp.2056- 2057, 1996.
 Hyun-bae Jeon, Jong-Seon No and Dong-Joon Shin, "A lowcomplexity SLM scheme using additive mapping sequences for PAPR reduction of OFDM signals", IEEE Transactions on Broadcasting, Vol.57, No.4, pp.866-875, 2011.
 S.H. Muller and J.B. Huber, "OFDM with reduced peak-toaverage power ratio by optimum combination of partial transmit sequences", IET Electronics Lett. Vol.33, No.5, pp.368-369, 1997.
 Sheng-Ju Ku, Chin-Liang Wang and Chiuan-Hsu Chen, "A reduced-complexity PTS-based PAPR reduction scheme for OFDM systems", IEEE Transactions on Wireless Communications, Vol.9, No.8, pp.2455-2460, 2010.
 Yajun Wang, Wen Chen and Chintha Tellambura, "A PAPR reduction method based on artificial bee colony algorithm for OFDM signals", IEEE Transacton on Wireless Communications, Vol.9, No.10, pp.2994-2999, 2010.
 Yajun Wang, Wen Chen and Chintha Tellambura, "PAPR reduction method based on parametric minimum cross enropy for OFDM signals", IEEE Communications Lett., Vol.14, No.6, pp.563-565, 2010.
 Jung-Chieh Chen, "Partial transmit sequences for peak-toaverage power ratio reducion of OFDM signals with the crossentropy method", IEEE Signal Processing Lett., Vol.16, No.6, pp.545-548, 2009.
 L.J. Cimini, Jr. Nelson and R. Sollenberger, "Peak-to-average power ratio reduction of an OFDM signal using partial transmit sequences", IEEE Communication Lett., Vol.4, No.3, pp.86-88, 2000.
 Shuangchi He and Tugnait J.K., "On doubly selective channel estimation using superimposed training and discrete prolate spheroidal sequences", IEEE Transactions on Signal Processing, Vol.56, No.7, pp.3214-3228, 2008.
 J.P. Nair and R.V.R. Kumar, "An iterative channel estimation method using superimposed training in OFDM systems", IEEE VTC Conference, pp.1-5, 2008.