WAVELENGTH DISPERSION ESTIMATION CIRCUIT, OPTICAL RECEIVER, AND WAVELENGTH DISPERSION ESTIMATION METHOD
    2.
    发明公开
    WAVELENGTH DISPERSION ESTIMATION CIRCUIT, OPTICAL RECEIVER, AND WAVELENGTH DISPERSION ESTIMATION METHOD 审中-公开
    波长色散估计电路,光学接收器和波长色散估计方法

    公开(公告)号:EP3255815A1

    公开(公告)日:2017-12-13

    申请号:EP16861870.0

    申请日:2016-10-04

    摘要: A Fourier-transformer (11) performs Fourier transform on a filter coefficient output from an adaptive equalizer (6) which comprises a finite impulse response filter of N taps (N represents an integer of 2 or more) in a time direction. An eigenvalue sum calculator (15) integrates a frequency-differentiation result of the Fourier-transformed filter coefficient and a complex conjugate of the Fourier-transformed filter coefficient to calculate a matrix, and calculates a sum of two eigenvalues of the matrix. A proportionality factor calculator (14) calculates a proportionality factor for frequency from the sum of the two eigenvalues.

    摘要翻译: 傅立叶变换器(11)对从自适应均衡器(6)输出的滤波器系数执行傅里叶变换,该自适应均衡器包括在时间方向上具有N个抽头(N表示2或更大的整数)的有限脉冲响应滤波器。 特征值和计算器(15)对傅立叶变换的滤波器系数的频率微分结果和傅立叶变换的滤波器系数的复共轭进行积分以计算矩阵,并且计算矩阵的两个特征值的和。 比例因子计算器(14)根据两个特征值的和来计算频率的比例因子。