专利名称：WAVELENGTH DISPERSION ESTIMATION
CIRCUIT, OPTICAL RECEIVER, ANDWAVELENGTH DISPERSION ESTIMATIONMETHOD
发明人：YAMAZAKI, Etsushi,TAKAMUKU,
Tomohiro,YOSHIDA, Yuki,YOSHIDA,Mitsuteru,SHIBAHARA, Koki,HORIKOSHI,Kengo,KISAKA, Yoshiaki
申请号：EP16861870.0申请日：20161004公开号：EP3255815B1公开日：20191211
摘要：A Fourier-transformer (11) performs Fourier transform on a filter coefficientoutput from an adaptive equalizer (6) which comprises a finite impulse response filter ofN taps (N represents an integer of 2 or more) in a time direction. An eigenvalue sumcalculator (15) integrates a frequency-differentiation result of the Fourier-transformedfilter coefficient and a complex conjugate of the Fourier-transformed filter coefficient tocalculate a matrix, and calculates a sum of two eigenvalues of the matrix. A
proportionality factor calculator (14) calculates a proportionality factor for frequencyfrom the sum of the two eigenvalues.
代理机构：Parker, Andrew James
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