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Sparse Volterra model based on optical single side-band NPAM-4 direct-detection system

机译：基于光学单边带NPAM-4直接检测系统的稀疏Volterra模型

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摘要

Signal-to-signal beating interference (SSBI) is one of the main drawbacks in direct-detection based optical transmission systems. Volterra filter is a common equalization method to mitigate the nonlinear distortion. However, the computational complexity may be unacceptable as the transmission capacity increases. In this paper, we propose a sparse Volterra model combining the feed forward equalization (FFE) and higher order terms of a modified Volterra filter with Schmidt orthogonal searching to mitigate the linear and nonlinear interference and reduce the complexity significantly in an optical single-side band (SSB) Nyquist pulse-shaped four-level pulse amplitude (NPAM-4) system. The experimental results show that the sparse Volterra filter and full Volterra filter have comparable performance, but the former only needs half kernels of the latter.
机译：信号到信号的跳动干扰（SSBI）是基于直接检测的光传输系统的主要缺点之一。 Volterra滤波器是减轻非线性失真的常用均衡方法。但是，随着传输容量的增加，计算复杂度可能无法接受。本文提出了一种稀疏的Volterra模型，该模型将前馈均衡（FFE）和改进的Volterra滤波器的高阶项与Schmidt正交搜索相结合，以减轻线性和非线性干扰并显着降低光学单边带中的复杂度（SSB）奈奎斯特脉冲形四电平脉冲幅度（NPAM-4）系统。实验结果表明，稀疏的Volterra滤波器和完整的Volterra滤波器具有可比的性能，但是前者只需要后者的一半内核。

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  • 来源
    《Optical fiber technology》 |2018年第1期|180-184|共5页
  • 作者

    Ying Hao; Zhu Mingyue; Zhang Jing; Yi Xingwen; Song Yang; Qiu Kun;

  • 作者单位

    Univ Elect Sci & Technol China, Minist Educ, Key Lab Opt Fiber Sensing & Commun, Chengdu 611731, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Minist Educ, Key Lab Opt Fiber Sensing & Commun, Chengdu 611731, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Minist Educ, Key Lab Opt Fiber Sensing & Commun, Chengdu 611731, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Minist Educ, Key Lab Opt Fiber Sensing & Commun, Chengdu 611731, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Minist Educ, Key Lab Opt Fiber Sensing & Commun, Chengdu 611731, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Minist Educ, Key Lab Opt Fiber Sensing & Commun, Chengdu 611731, Sichuan, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Optical communications; Single side-band; Signal-to-signal beating interference; Orthogonal searching; Sparse Volterra filter;

    机译：光通信;单边带;信号间的跳动干扰;正交搜索;稀疏Volterra滤波器;

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