[1] [1] WUNDER G, JUNG P, KASPARICK M, et al. 5G NOW: Non-Orthog- onal, Asynchronous Waveforms for Future Mobile Applications[J]. IEEE Communications Magazine, 2014, 52(2): 97-105.

[2] [2] ZHENG Z, WANG D, ZHU X, et al. Orthogonal-band-multiplexed offset-QAM optical superchannel generation and coherent detection[J]. Scientific Reports, 2015(5): 17891-1-17891-10.

[3] [3] VAIDYANATHAN P P. Multirate Systems and Filter Banks[M]. Chennai: Pearson Education India, 1993.

[4] [4] YU Y, TOWNSEND P D, ZHAO Jian. Equalization of dispersion- induced crosstalk in optical offset-QAM OFDM systems[J]. IEEE Photon. Technol. Lett., 2016, 7(28): 782-785.

[5] [5] OH Y, MURMANN B. System embedded ADC calibration for OFDM receivers[J]. IEEE Transactions on Circuits and Systems I: Regular Papers, 2006, 53(8): 1693-1703.

[6] [6] JIANG T, NI C, YE C, et al. A Novel Multi-Block Tone Reservation Scheme for PAPR Reduction in OQAM-OFDM Systems[J]. IEEE Transactions on Broadcasting, 2015, 61(4): 717-722.

[7] [7] UDAYAKUMAR E, VETRIVELAN P. PAPR reduction for OQAM/OFDM signals using Optimized Iterative Clipping and Filtering technique[C]// International Conference on Soft-computing & Networks Security， Feb. 25-27, 2015. Coimbatore, India. New York: IEEE, 2015: 1-6.

[8] [8] TIPAN M N, CACERES J, JIMENEZ M N, et al. Comparison of clipping techniques for PAPR reduction in UFMC systems[C]// 2017 IEEE 9th Latin-American Conference on Communications(LATINCOM), Nov. 8-10, 2017, Guatemala City, Guatemala. New York: IEEE, 2015:1-4.

[9] [9] PENG J, HAN L, ZHU Q, et al. SQNR Improvement Enabled by Nonuniform DAC Output Levels for IM-DD OFDM Systems[J]. IEEE Photonics Journal, 2017, 9(2): 1-11.