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A joint recovery scheme for carrier frequency offset and carrier phase noise using extended Kalman filter

机译：使用扩展卡尔曼滤波器的载波频率偏移和载波相位噪声联合恢复方案

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摘要

A joint carrier recovery scheme for polarization division multiplexing (PDM) coherent optical transmission system is proposed and demonstrated, in which the extended Kalman filter (EKF) is exploited to estimate and equalize the carrier frequency offset (CFO) and carrier phase noise (CPN) simultaneously. The proposed method is implemented and verified in the PDM-QPSK system and the PDM-16QAM system with the comparisons to conventional improved Mth-power (IMP) algorithm for CFO estimation, blind phase search (BPS) algorithm or Viterbi-Viterbi (V-V) algorithm for CPN recovery. It is demonstrated that the proposed scheme shows high CFO estimation accuracy, with absolute mean estimation error below 1.5 MHz. Meanwhile, the proposed method has the CFO tolerance of [+/- 3 GHz] for PDM-QPSK system and [+/- 0.9 GHz] for PDM-16QAM system. Compare with IMP/BPS and IMP/V-V, the proposed scheme can enhance the linewidth symbol duration product from 3 x 10(-4) (IMP/BPS) and 2 x 10(-4) (IMP/V-V) to 1 x 10(-3) for PDM-QPSK, and from 1 x 10(-4) (IMP/BPS) to 3 x 10(-4) for PDM-16QAM, respectively, at the 1 dB optical signal-to-noise ratio (OSNR) penalty. The proposed Kalman filter also shows a fast convergence with only 100 symbols and much lower computational complexity. (C) 2017 Elsevier Inc. All rights reserved.
机译：提出并证明了偏振分复用（PDM）相干光传输系统的联合载波恢复方案，其中利用扩展卡尔曼滤波器（EKF）来估计和均衡载波频率偏移（CFO）和载波相位噪声（CPN）同时。与传统的改进的CFO估计的Mth-power（IMP）算法，盲相搜索（BPS）算法或Viterbi-Viterbi（VV）算法相比，该方法在PDM-QPSK系统和PDM-16QAM系统中得以实现和验证。 CPN恢复的算法。结果表明，该方案具有较高的CFO估计精度，绝对平均估计误差低于1.5 MHz。同时，所提出的方法对于PDM-QPSK系统具有[+/- 3 GHz]的CFO容限，对于PDM-16QAM系统具有[+/- 0.9 GHz]的CFO容限。与IMP / BPS和IMP / VV相比，该方案可以将线宽符号持续时间乘积从3 x 10（-4）（IMP / BPS）和2 x 10（-4）（IMP / VV）提高到1 x 10对于PDM-QPSK为（-3），对于PDM-16QAM为1 x 10（-4）（IMP / BPS）到3 x 10（-4），光信噪比为1 dB（ OSNR）损失。提出的卡尔曼滤波器还显示了仅100个符号的快速收敛性，并且计算复杂度低得多。 （C）2017 Elsevier Inc.保留所有权利。

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  • 来源
    《Optical fiber technology》 |2017年第7期|438-446|共9页
  • 作者

    Li Linqian; Feng Yiqiao; Zhang Wenbo; Cui Nan; Xu Hengying; Tang Xianfeng; Xi Lixia; Zhang Xiaoguang;

  • 作者单位

    Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

    Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

    Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China|Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China;

    Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

    Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China|Liaocheng Univ, Phys Sci & Informat Engn Coll, Liaocheng 252000, Shandong, Peoples R China;

    Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

    Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

    Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, 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

    Extended Kalman filter (EKF); Carrier frequency offset (CFO) estimation; Carrier phase noise (CPN) recovery;

    机译：扩展卡尔曼滤波器（EKF）;载波频偏（CFO）估计;载波相位噪声（CPN）恢复;

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