公开(公告)号：US20230076665A1

公开(公告)日：2023-03-09

申请号：US17986485

申请日：2022-11-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yanbo ZHAO ,  Jianfei LIU ,  Jinshan WANG ,  Yanbin SUN ,  Liming FANG

IPC: H04L27/26

Abstract: This application provides a narrowband interference isolation method and a communication apparatus. An example method includes: determining a parameter of a narrowband interference signal; determining a coefficient of a first filter based on the parameter of the narrowband interference signal, wherein the first filter is located at a receive end of a master communication device, and the coefficient of the first filter is for filtering out the narrowband interference signal; and sending the parameter of the narrowband interference signal or the coefficient of the first filter to M slave communication devices using an Ethernet operation, administration, and maintenance (OAM) frame, wherein the master communication device is connected to the M slave communication devices, M≥1, and M is an integer.

公开(公告)号：US20230072440A1

公开(公告)日：2023-03-09

申请号：US17987393

申请日：2022-11-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jinshan WANG ,  Liming FANG ,  Yanbo ZHAO ,  Yanbin SUN ,  Jianfei LIU ,  Yumeng YANG ,  Chao WANG

IPC: H04B1/525 ,  H04B7/015 ,  H04B1/10

Abstract: An echo cancellation method and a transceiver to reduce dependence of a system on an enob of a DAC, and improve performance of echo cancellation. The transceiver includes an echo cancellation apparatus, a transmit link, a receive link, and a hybrid circuit. The transmit link and the receive link are coupled to a transmission line by using the hybrid circuit. The echo cancellation apparatus includes a first signal converter, a slicer, a first subtractor, a second digital-to-analog converter, a second subtractor, and a third subtractor.

公开(公告)号：US20140301433A1

公开(公告)日：2014-10-09

申请号：US14311868

申请日：2014-06-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Liming FANG

IPC: H04B3/32

CPC classification number: H04B3/32 ,  H04B1/62 ,  H04J1/12 ,  H04L2012/6478

Abstract: A method for remote crosstalk cancellation, includes: the combination transmitting signal is performed a pre-coding of crosstalk cancellation in the manner of self-adapting filtering, the self-adapting changes of the filtering parameters are guided correctly with the influence of the crosstalk component in the received signals which is reflected indirectly by relevant values of the noise statistic reported by the receiver. A corresponding device for remote crosstalk cancellation is provided.

Abstract translation: 一种用于远程串扰消除的方法，包括：以自适应滤波的方式对组合发送信号进行串扰消除的预编码，滤波参数的自适应变化由于串扰分量的影响而被正确地引导 在由接收机报告的噪声统计量的相关值间接反映的接收信号中。 提供了用于远程串扰消除的相应设备。

公开(公告)号：US20130108026A1

公开(公告)日：2013-05-02

申请号：US13719761

申请日：2012-12-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Liming FANG ,  Raphael Cendrillon

IPC: H04B3/46

CPC classification number: H04B3/464 ,  H04B3/32 ,  H04B3/487 ,  H04L5/14 ,  H04L25/0204 ,  H04L25/0212 ,  H04M11/062

Abstract: A method and apparatus for crosstalk channel estimation based on a measured signal-to-noise (SNR) of a loaded line. The method for channel estimation includes: loading, on a newly added line K, a combination of K-1 signals sent on lines 1 to K-1; obtaining a measured SNR of the line K loaded with the combination of the K-1 signals sent on the lines 1 to K-1; and calculating crosstalk channels of the line K according to K-1 coefficients of the K-1 signals sent on the lines 1 to K-1 and the measured SNR. Embodiments of the present invention may be used for relevant network communications systems such as xDSL systems.

Abstract translation: 一种基于负载线的测量信噪比（SNR）的串扰信道估计的方法和装置。 用于信道估计的方法包括：在新添加的线路K上加载在线路1至K-1上发送的K-1信号的组合; 获得加载了在线路1至K-1上发送的K-1信号的组合的线路K的测量SNR; 以及根据在线路1至K-1发送的K-1信号的K-1系数和所测量的SNR来计算线路K的串扰信道。 本发明的实施例可以用于诸如xDSL系统的相关网络通信系统。

公开(公告)号：US20130039399A1

公开(公告)日：2013-02-14

申请号：US13648843

申请日：2012-10-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Liming FANG ,  Raphael Cendrillon

IPC: H04B3/32 ,  H04B17/00 ,  H04B1/38

CPC classification number: H04B3/464 ,  H04B3/32 ,  H04B3/487 ,  H04L5/14 ,  H04L25/0204 ,  H04L25/0212 ,  H04M11/062

Abstract: A method and apparatus for crosstalk channel estimation based on a measured signal-to-noise (SNR) of a loaded line. The method for channel estimation includes: loading, on a newly added line K, a combination of K−1 signals sent on lines 1 to K−1; obtaining a measured SNR of the line K loaded with the combination of the K−1 signals sent on the lines 1 to K−1; and calculating crosstalk channels of the line K according to K−1 coefficients of the K−1 signals sent on the lines 1 to K−1 and the measured SNR. Embodiments of the present invention may be used for relevant network communications systems such as xDSL systems.

Abstract translation: 一种基于负载线的测量信噪比（SNR）的串扰信道估计的方法和装置。 用于信道估计的方法包括：在新添加的线路K上加载在线路1至K-1上发送的K-1信号的组合; 获得加载了在线路1至K-1上发送的K-1信号的组合的线路K的测量SNR; 以及根据在线路1至K-1发送的K-1信号的K-1系数和所测量的SNR来计算线路K的串扰信道。 本发明的实施例可以用于诸如xDSL系统的相关网络通信系统。

公开(公告)号：US20190319711A1

公开(公告)日：2019-10-17

申请号：US16452389

申请日：2019-06-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Liqiang YU ,  Liming FANG ,  Sulin YANG ,  Xiaofeng ZHANG

IPC: H04B10/50 ,  H01S5/00 ,  G02F1/015 ,  H04B10/564

Abstract: An optical signal modulation circuit includes a laser (DFB), a modulator (EAM), and an operational amplifier. The laser (DFB) generates a laser to stimulate the modulator (EAM) to generate a photon-generated current (ip), a first port (a) of the modulator (EAM) is connected to a first input voltage (Vbias), a second port (b) of the modulator (EAM) is connected to an inverting input end of the operational amplifier, a non-inverting input end of the operational amplifier is connected to a second input voltage (Vin), and an output end of the operational amplifier is connected to the first port (a) of the modulator. In the modulation circuit, a photon-generated current (ip) of the EAM is fed back to the operational amplifier, to implement a linear relationship between the second input voltage (Vin) and the photon-generated current (ip) of the EAM, and obtain a linear EML transmission curve, namely, a high-linearity EML.

公开(公告)号：US20150270871A1

公开(公告)日：2015-09-24

申请号：US14734745

申请日：2015-06-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Liming FANG

IPC: H04B3/32 ,  H04B1/62

CPC classification number: H04B3/32 ,  H04B1/62 ,  H04J1/12 ,  H04L2012/6478

Abstract: A method for remote crosstalk cancellation, includes: the combination transmitting signal is performed a pre-coding of crosstalk cancellation in the manner of self-adapting filtering, the self-adapting changes of the values of filtering parameters are guided correctly with the influence of the crosstalk component in the received signals which is reflected indirectly by relevant values of the noise statistic reported by the receiver. A corresponding device for remote crosstalk cancellation is provided.

Abstract translation: 一种用于远程串扰消除的方法，包括：组合发送信号以自适应滤波的方式进行串扰消除的预编码，滤波参数值的自适应变化被正确地引导， 由接收机报告的噪声统计量的相关值间接反映的接收信号中的串扰分量。 提供了用于远程串扰消除的相应设备。