公开(公告)号：US20160269108A1

公开(公告)日：2016-09-15

申请号：US15030834

申请日：2014-05-23

Applicant: ZTE CORPORATION

Inventor： Yangzhong YAO ,  Qiang LI ,  Yunpeng LI ,  Guohua GU ,  Wei REN

IPC: H04B10/079 ,  H04B10/61

CPC classification number: H04B10/07951 ,  H04B10/612 ,  H04B10/613 ,  H04B10/6161 ,  H04B10/6163 ,  H04B10/6165 ,  H04B10/6166

Abstract: Disclosed are a chromatic dispersion estimation method and device in optical coherent communication, wherein, the method includes: performing a fast Fourier transform on IQ-imbalance compensated data to obtain frequency-domain data in two polarization directions; calculating autocorrelation sequences of the frequency-domain data and performing an inverse fast Fourier transform on the values of the autocorrelation sequences; calculating modulus squares of the results of the inverse fast Fourier transform, and adding the results in the two polarization directions to obtain; determining a mean value of s of a plurality of data sets; calculating an index of the maximum value of, and estimating a dispersion value of the optical fiber link according to the index of the maximum value of. The abovementioned technical solution allows a significantly accurate and rapid estimation of dispersion values.

Abstract translation: 公开了光相干通信中的色散估计方法和装置，其中，该方法包括：对IQ不平衡补偿数据执行快速傅立叶变换以获得两个偏振方向的频域数据; 计算频域数据的自相关序列并对自相关序列的值执行快速傅里叶逆变换; 计算逆快速傅里叶变换结果的模数平方，并将结果加在两个极化方向上获得; 确定多个数据集的s的平均值; 根据最大值的索引计算最大值的索引，并估计光纤链路的色散值。 上述技术方案允许对色散值进行显着准确和快速的估计。

公开(公告)号：US20230144980A1

公开(公告)日：2023-05-11

申请号：US17916327

申请日：2021-04-02

Applicant: ZTE CORPORATION

Inventor： Shuangxi LI ,  Yangzhong YAO ,  Nanshan CAO ,  Yunpeng LI

IPC: H04L27/26 ,  H04L25/49

CPC classification number: H04L27/2657 ,  H04L25/4917

Abstract: The present disclosure provides a method for estimating a frequency offset, including: extracting sampling points from an input signal according to preset intervals to obtain a plurality of groups of sampling points, with the preset intervals of the groups of sampling points being different; performing processes on a current sampling point and the groups of sampling points to obtain data of arguments of complex numbers corresponding to the preset intervals; and determining an estimation value of a frequency offset of a current input signal according to the data of arguments of complex numbers corresponding to the preset intervals. The present disclosure further provides an apparatus for estimating a frequency offset, an electronic device and a computer-readable medium.