Nonlinear suppression for polarization division multiplexed optical OFDM/OQAM systems

Xi Fang, Miaoxin Zhu,Zhufeng Suo,Yixin Fu,Ding Ding,Yingrong Chen,Qian Liao,Lei Zhang

Optical Fiber Technology（2022）

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摘要

•nonlinear interference concentration property of the filter banks is systemically discussed for PDM OFDM/OQAM system.•pilot-aided DVNE nonlinear equalization method is proposed to improve system robustness against nonlinear interference by using specially designed pilot sequences.•nonlinear interference for PDM optical OFDM/OQAM could be evidently suppressed by using DVNE.•double bit rate and spectral efficiency could be obtained by using DVNE without scarifying the maximum transmission distance.

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关键词

Optical communication,Orthogonal frequency division multiplexing offset quadrature amplitude modulation (OFDM/OQAM),Nonlinear suppression,Time–frequency localization

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