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Chinese Journal of Lasers, Volume. 46, Issue 4, 0406002(2019)

Timing Synchronization Algorithm of Coherent Optical Orthogonal Frequency Division Multiplexing System Based on Constant Amplitude Zero Auto-Correlation Sequences

Yanpeng Xu1,2、*, Jianfei Liu1,2、*, Xiangye Zeng1,2, Jia Lu1,2, and Xueqi Wu1,2
Author Affiliations
  • 1 School of Electronic and Information Engineering, Hebei University of Technology, Tianjin 300401, China
  • 2 Tianjin Key Laboratory of Electronic Materials and Devices, Tianjin 300401, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (7)
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    Figures & Tables(7)
    Structural diagram of CO-OFDM system

    Fig. 1. Structural diagram of CO-OFDM system

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    Structural diagram of training sequence

    Fig. 2. Structural diagram of training sequence

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    Principle diagram of sliding correlation operation

    Fig. 3. Principle diagram of sliding correlation operation

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    Timing metric results by three algorithms. (a) Schmidl&Cox algorithm; (b) Park algorithm; (c) proposed algorithm

    Fig. 4. Timing metric results by three algorithms. (a) Schmidl&Cox algorithm; (b) Park algorithm; (c) proposed algorithm

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    Comparison of correlation peak of timing metric function. (a) Correlation peak mean curves; (b) correlation peak variance curves

    Fig. 5. Comparison of correlation peak of timing metric function. (a) Correlation peak mean curves; (b) correlation peak variance curves

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    MSE versus CD of timing synchronization algorithm

    Fig. 6. MSE versus CD of timing synchronization algorithm

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    • Table 1. Simulation parameters of CO-OFDM system

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      Table 1. Simulation parameters of CO-OFDM system

      Number ofcarriersSymbol rate /(Gbit·s-1)CyclicprefixCentralfrequency /THzModulationAttenuation /(dB·km-1)Nonlinear index /(m2·W-1)
      2048112256193.1Quadrature phaseshift keying0.22.6×10-20
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    Yanpeng Xu, Jianfei Liu, Xiangye Zeng, Jia Lu, Xueqi Wu. Timing Synchronization Algorithm of Coherent Optical Orthogonal Frequency Division Multiplexing System Based on Constant Amplitude Zero Auto-Correlation Sequences[J]. Chinese Journal of Lasers, 2019, 46(4): 0406002

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    Paper Information

    Category: fiber optics and optical communications

    Received: Jan. 7, 2019

    Accepted: Jan. 22, 2019

    Published Online: May. 9, 2019

    The Author Email:

    DOI:10.3788/CJL201946.0406002

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology