公开(公告)号：US20190081708A1

公开(公告)日：2019-03-14

申请号：US16185922

申请日：2018-11-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shengmeng Fu ,  Hongguang Zhang ,  Jiangwei Man ,  Jianhe Gao

IPC: H04B10/516 ,  H04L27/04 ,  H04B10/67

Abstract: A method includes: sending, by a signal transmitting device, a first PAM signal to a signal receiving device, where the first PAM signal includes N first level amplitudes, and N≥3; receiving, by the transmitting device, feedback parameters sent by the receiving device, where the feedback parameters are determined based on the first PAM signal; determining, by the transmitting device, N target level amplitudes based on the feedback parameters, where intervals between every two adjacent target level amplitudes in the N target level amplitudes are different from each other; and generating, by the transmitting device based on the N target level amplitudes, a second PAM signal that needs to be sent to the receiving device.

公开(公告)号：US10666468B2

公开(公告)日：2020-05-26

申请号：US16227366

申请日：2018-12-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianhe Gao ,  Bo Gao ,  Hongguang Zhang ,  Shengmeng Fu

IPC: H04L25/03 ,  H04Q11/00 ,  H04B10/27 ,  H04J14/08

Abstract: The present disclosure relates to the field of communications technologies, and discloses a channel training method, apparatus, and system, so as to resolve a problem in which a newly added ONU in a PON cannot be registered and go online in time. In embodiments of the present disclosure, a first moment for triggering channel training is determined; normal data is stopped sending from the first moment and a training frame is generated; and then the training frame is sent to all ONUs in a PON, so that a target ONU trains an automatic adaptive equalizer based on the training frame, where the target ONU is at least one of all the ONUs in the PON. The solutions provided in the embodiments of the present disclosure are applicable to the equalizer training the ONU.