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.

公开(公告)号：US20220407678A1

公开(公告)日：2022-12-22

申请号：US17642949

申请日：2020-09-23

Applicant: ZTE CORPORATION

Inventor： Guohua GU ,  Yangzhong YAO ,  Nanshan CAO ,  Chungui TAO

IPC: H04L7/04 ,  H04L7/027 ,  H04L7/00 ,  H03M1/12 ,  H03M1/06

Abstract: 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.