-
公开(公告)号：US20240372612A1
公开(公告)日：2024-11-07
申请号：US18310200
申请日：2023-05-01
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhiping JIANG , Qingyi GUO , Xuefeng TANG
IPC: H04B10/079
Abstract: The disclosed systems and methods for determining spectrum-resolved signal-to-noise ratio (SNR) in an online dense wavelength division multiplexing (DWDM) optical link, the method comprising: i) receiving a noise affected optical signal; ii) converting the received optical signal into a digital signal; iii) processing the digital signal to extract the noise affected transmitted signal; iv) decoding the noise-affected transmitted signal and reconstructing an original transmitted signal; v) converting the noise-affected transmitted signal into frequency domain noise-affected transmitted signal; vi) converting the original transmitted signal into frequency domain original transmitted signal; vii) selecting spectrum slices from the frequency domain noise-affected transmitted signal and the frequency domain original transmitted signal; viii) converting the spectrum slices into time domain portions of the noise-affected transmitted signal and the original transmitted signal respectively; ix) correlating the time domain portions of the noise-affected transmitted signal and the original transmitted signal; and x) determining the spectrum-resolved SNR.
-
公开(公告)号：US20250030385A1
公开(公告)日：2025-01-23
申请号：US18353433
申请日：2023-07-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jianhong KE , Xuefeng TANG , Chuandong LI
Abstract: Pre-compensation for linear and non-linear distortion in data symbols comprises generating a set of data symbols to be transmitted and converting the set into a set of frequency-domain samples, which are then pre-processed. Linear distortion compensation is provided, prior to compensating for non-linear distortions, to the pre-processed set of frequency-domain samples. The linear distortion compensated set of frequency-domain samples is converted into a linear distortion compensated set of time domain samples. Non-linear distortion compensation is provided to the linear distortion compensated set of time domain samples. A Pattern Dependent Lookup Table (PDLUT) is generated by receiving consecutive sequences of samples included in a set of time domain samples, quantizing the consecutive sequences of samples into integer-valued consecutive sequences of samples, computing error correction values corresponding to the integer-valued consecutive sequences of samples, and storing the indexes of integer-valued consecutive sequences of samples and the corresponding error correction values in the PDLUT.
-
Patent Agency Ranking
公开(公告)号：US20240243815A1
公开(公告)日：2024-07-18
申请号：US18618399
申请日：2024-03-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xuefeng TANG , Qiang JIN , Wing Chau NG , Chuandong LI
CPC classification number: H04B10/541 , H04L27/36
Abstract: Systems and methods for In-phase and Quadrature modulation. The method includes i) processing In-phase digital signals and Quadrature digital signals and generating PT modulated In-phase analog signals and PT modulated Quadrature analog signals, ii) receiving an optical signal, iii) modulating the optical signal in accordance with the PT modulated In-phase analog signals and the PT modulated Quadrature analog signals and generate PT modulated In-phase optical signals and PT modulated Quadrature optical signals, iv) biasing the PT modulated In-phase optical signals and the PT modulated Quadrature optical signals to a null point, v) adjusting a phase bias point of the PT modulated Quadrature optical signals and generating phase adjusted PT modulated Quadrature optical signals, and vi) combining the PT modulated In-phase optical signals and phase adjusted PT modulated Quadrature optical signal and generate a combined PT modulated optical signal to be transmitted towards a receiver.
-
4.发明公开公开(公告)号：US20240106533A1
公开(公告)日：2024-03-28
申请号：US18498614
申请日：2023-10-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xuefeng TANG , Ge GAO , Jianwu WANG , Zhiping JIANG , Zhuhong ZHANG
IPC: H04B10/077 , H04B10/079 , H04B10/294 , H04B10/61
CPC classification number: H04B10/0775 , H04B10/07953 , H04B10/2942 , H04B10/616
Abstract: Device and methods for real-time polarization-dependent loss monitoring at coherent transceivers. In one embodiment, there is provided a method of monitoring a polarization dependent loss (PDL) of a signal during transmission through an optical communication link, the method comprising: receiving the signal by a coherent receiver, the received signal being subjected to one or more impairments in Amplifier Gain Control (AGC) mode, the one or more impairments including PDL; estimating an AGC gain effect of the AGC mode; compensating for the AGC gain effect in the received signal; determining the PDL from the compensated signal; and reporting the PDL.
-
公开(公告)号：US20230269107A1
公开(公告)日：2023-08-24
申请号：US18180219
申请日：2023-03-08
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Weiping SONG , Shiyong FU , Yajie CAI , Xuefeng TANG , Houcun ZHU
CPC classification number: H04L12/10 , H04L12/40045 , H04L2012/2845
Abstract: This application relates to a power consumption grading method for a network-based power supply system. The method includes: when it is detected that power overload protection is not triggered, starting a plurality of power modules of a powered device one by one in a specific order until all the plurality of power modules are started or it is detected that the power overload protection is triggered after a specific power module is started; when it is detected that the power overload protection is triggered, selecting, according to the specific order and based on the specific power module, one or more of the plurality of power modules as a power module combination of the powered device; and determining a load power of the powered device and a corresponding power consumption level based on the power module combination.
-
公开(公告)号：US20240305375A1
公开(公告)日：2024-09-12
申请号：US18181819
申请日：2023-03-10
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jianhong KE , Hongliang LI , Xuefeng TANG , Chuandong LI
IPC: H04B10/2507 , G06N20/00
CPC classification number: H04B10/2507 , G06N20/00
Abstract: The disclosed systems, and methods are directed to compressing a Pattern Dependent Look-up Table (PDLUT) including distortion correction values corresponding to data symbol sequences, including: i) symmetrically rearranging the data symbol sequences and the associated distortion correction values; ii) folding and amplitude reversing a second half of the rearranged data symbol sequences and the associated distortion correction values; iii) determining approximate distortion correction values for a first half of the rearranged data symbol sequences based on the distortion correction values associated with the first half of the rearranged data symbol sequences and the folded and amplitude reversed distortion correction values associated with the second half of the data symbol sequences; and iv) updating the PDLUT based on the approximate distortion values corresponding to the first half of the rearranged data symbol sequences.
-
公开(公告)号：US20210021340A1
公开(公告)日：2021-01-21
申请号：US16927245
申请日：2020-07-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhiping JIANG , Xuefeng TANG , Haitao SUN
IPC: H04B10/079 , H04B10/50 , H04J14/02
Abstract: The disclosed systems, apparatuses and methods are directed to controlling a difference between a first center frequency of a first optical subcarrier and a second center frequency of a second optical subcarrier of an optical super-channel signal in an optical network. The method comprises modulating the first optical subcarrier at a first optical side component frequency with a first side modulation frequency and modulating the second optical subcarrier at a second optical side component frequency with a second side modulation frequency. The method further comprises detecting a radio-frequency (RF) power at a modulated beat frequency tone in the modified optical signal.
-
-
-
-
-
-
Search Results
7
records
(took 0.016 seconds)
