公开(公告)号：US20230379196A1

公开(公告)日：2023-11-23

申请号：US18318824

申请日：2023-05-17

Applicant: Nokia Solutions and Networks Oy

Inventor： Dong Xu ZHANG ,  Shuang YAO ,  Chen Hui YE

IPC: H04L25/03

CPC classification number: H04L25/03828 ,  H04L25/03006

Abstract: Examples of the present disclosure relate to a method, device and apparatus for communication, and a computer-readable medium. An example of the method includes: conducting, based on a channel response between a transmitter and a receiver, spectral shaping on a first sequence at the transmitter, so as to obtain an intermediate sequence, where the spectral shaping at least partially counters the channel response; remapping the intermediate sequence, so as to obtain a second sequence, where the second sequence has less signal levels than the intermediate sequence; and transmitting the second sequence to the receiver, so as to train an equalizer of the receiver. In this way, the method can accelerate training of the equalizer without sacrificing performance of the equalizer or introducing any additional hardware cost.

公开(公告)号：US20230403075A1

公开(公告)日：2023-12-14

申请号：US18329097

申请日：2023-06-05

Applicant: Nokia Solutions and Networks Oy

Inventor： Dong Xu ZHANG ,  Shuang YAO ,  Chen Hui YE

IPC: H04B10/079 ,  H04Q11/00

CPC classification number: H04B10/0795 ,  H04Q11/0062 ,  H04Q2011/0086

Abstract: Embodiments of the present disclosure relate to methods, devices and apparatuses for optical communication, and a computer readable medium. An embodiment of the method comprises determining, at an optical line terminal, a channel characteristic of a channel from an optical network unit to the optical line terminal; determining, based on the channel characteristic, a preamble property for a transmission from the optical network unit to the optical line terminal, the preamble property at least partially compensating for transmission distortion caused by the channel characteristic; transmitting preamble information to the optical network unit, the preamble information being for generating a preamble having the preamble property; and receiving the preamble having the preamble property from the optical network unit. In this way, a training speed of an equalizer of the optical line terminal can be improved, and preamble overhead can be reduced.