相干光通信中基于分数傅里叶变换的色散盲估计

2020 IEEE International Conference on Artificial Intelligence and Information Systems (ICAIIS) Pub Date : 2020-03-01 DOI:10.1109/ICAIIS49377.2020.9194813

Xiaoyong Sun, Zhen Zuo, Shaojing Su, Xiaopeng Tan

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引用次数: 5

摘要

本文提出并演示了一种基于分数阶傅立叶变换(FrFT)的盲色散估计方法。当FrFT作用于具有能量收敛的线性调频信号时，将其与光纤色散信号进行比较，通过扫描或搜索的方法可获得最佳阶数。通过数值模拟，证明了28 GBaud PM-QPSK和PM-16QAM信号在(-70,45)ps/nm范围内的CD估计是可靠的。当传输距离超过100km~2000km的标准单模光纤(SSMF)时，CD估计的平均估计误差分别为0.15%和0.5%。

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Blind Chromatic Dispersion Estimation Using Fractional Fourier Transformation in Coherent Optical Communications

In this paper, we propose and demonstrate a blind chromatic dispersion (CD) estimation method based on fractional Fourier transformation (FrFT). When FrFT acts on linear frequency modulated (LFM) signal with energy convergence, it is compared to fiber chromatic dispersion signal, and the best order can be obtained by scanning or search method. Through numerical simulations, reliable CD estimation is demonstrated for 28 GBaud PM-QPSK and PM-16QAM signals with a range of (-70,45) ps/nm. The average estimation error of CD estimation is 0.15% and 0.5% when the transmission distance over 100km~2000km standard single mode fiber (SSMF).

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2020 IEEE International Conference on Artificial Intelligence and Information Systems (ICAIIS)

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