Sanechips Technology Co., Ltd.

Zte Corporation

Guohua Gu

Yangzhong Yao

Wei Ren

Yunpeng Li

Qiang Li

Yi Cai

Nanshan Cao

Chungui Tao

The present disclosure provides a signal sampling method and apparatus, and an optical receiver. The method includes sampling a burst signal that is received according to a first sampling frequency to obtain a first sampling signal; sampling a preamble signal in the first sampling signal according to a second sampling frequency to obtain a second sampling signal; determining a phase difference between the burst signal and a local sampling clock corresponding to the first sampling frequency according to the second sampling signal; and interpolating the first sampling signal according to the phase difference to obtain a target sampling signal.

Signal sampling method and apparatus, and optical receiver

A clock recovery method is provided. The method has the following operations: performing clock balance pre-filtering on an input time/frequency domain signal according to a self-adaptive balance coefficient input currently, to obtain a balance pre-filtering signal; according to the balance pre-filtering signal, acquiring a phase error of the input time/frequency domain signal; and performing phase adjustment on the input time/frequency domain signal according to the phase error, and outputting a new self-adaptive balance coefficient after self-adaptive balance processing is performed on the phase-adjusted time/frequency domain signal. A clock recovery device and system and a non-transitory computer-readable storage medium are also provided.

Clock recovery method, device and system and computer storage medium

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.

Method and device for estimation of chromatic dispersion in optical coherent communication

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Shenzhen, China

Guohua Gu