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1. 发明公开

EP4262108A1 OPTICAL COUPLER, COMMUNICATION METHOD AND COMMUNICATION SYSTEM 审中-实审
公开(公告)号：EP4262108A1
公开(公告)日：2023-10-18
申请号：EP22752173.9
申请日：2022-01-28
申请人： Huawei Technologies Co., Ltd.
发明人： HUANG, Yuanda , ZHANG, Xin , CHANG, Tianhai
IPC分类号： H04B10/291 , G02B6/28
摘要： This application discloses an optical coupler, a communication method, and a communication system, and belongs to the communication field. The communication system includes N transmitters, M receivers, and an optical coupler, where both N and M are positive integers greater than 1. Each of the N transmitters is configured to send one first optical signal to the optical coupler. The optical coupler is configured to couple N first optical signals sent by the N transmitters into one second optical signal, and broadcast the second optical signal to the M receivers. Each of the M receivers is configured to receive the second optical signal sent by the optical coupler, and demodulate the second optical signal. In this application, a communication delay in the communication system can be reduced.

2. 发明公开

EP3869714A1 DECODING METHOD AND DECODING APPARATUS 审中-实审
公开(公告)号：EP3869714A1
公开(公告)日：2021-08-25
申请号：EP19885846.6
申请日：2019-10-30
申请人： Huawei Technologies Co., Ltd.
发明人： HUANG, Yuanda , XIA, Bin
IPC分类号： H04L1/00
摘要： Embodiments of this application disclose a decoding method, so as to improve FEC decoding performance and a system transmission capability. The method according to the embodiments of this application includes: receiving, by a receive end device, a first bit signal; performing, by the receive end device, level-M forward error correction FEC decoding on the first bit signal to obtain a second bit signal, where M is a positive integer greater than zero; checking, by the receive end device, the second bit signal to obtain a first check result; performing, by the receive end device, level-(M+1) FEC decoding on the second bit signal based on the first check result to obtain a third bit signal; and performing, by the receive end device when M+1 reaches a first preset threshold, data processing on the third bit signal to obtain a fourth bit signal, where the fourth bit signal is used by the receive end device to obtain service data transmitted by a transmit end device.

3. 发明授权

EP2461623B1 METHOD AND SYSTEM FOR IMPROVING SIGNAL QUALITY 有权
公开(公告)号：EP2461623B1
公开(公告)日：2020-02-26
申请号：EP09848618.6
申请日：2009-08-27
申请人： Huawei Technologies Co., Ltd.
发明人： QING, Huaping , YU, Fan , CHANG, Deyuan , DING, Chiwu , HUANG, Yuanda , SU, Wei , LI, Yang , SHEN, Yao
IPC分类号： H04W28/04 , H04L27/38 , H04L1/00 , H04J3/16 , H04L1/20

4. 发明授权

EP3264639B1 OPTICAL SIGNAL FREQUENCY CALIBRATION METHOD AND DEVICE 有权
公开(公告)号：EP3264639B1
公开(公告)日：2019-05-08
申请号：EP15885042.0
申请日：2015-03-19
申请人： Huawei Technologies Co., Ltd.
发明人： HUANG, Yuanda , LI, Liangchuan
IPC分类号： H04B10/572 , H04J14/02 , H04B17/21 , H04B17/11 , H04B10/61 , H04B10/50 , H04B10/079

5. 发明授权

EP2608436B1 METHOD AND DEVICE FOR RECEIVING MULTI-CARRIER OPTICAL SIGNALS 有权
公开(公告)号：EP2608436B1
公开(公告)日：2019-05-01
申请号：EP11858144.6
申请日：2011-07-26
申请人： Huawei Technologies Co., Ltd.
发明人： HUANG, Yuanda , LI, Liangchuan , LIU, Ling , LIU, Lei
IPC分类号： H04B10/61 , H04J14/02 , H04L27/26

6. 发明公开

EP3316498A1 PHASE ESTIMATION METHOD AND DEVICE OF POLARIZATION MULTIPLEXING SYSTEM 有权
标题翻译：极化复用系统的相位估计方法和装置
公开(公告)号：EP3316498A1
公开(公告)日：2018-05-02
申请号：EP15895896.7
申请日：2015-06-23
申请人： Huawei Technologies Co., Ltd.
发明人： HUANG, Yuanda
IPC分类号： H04B10/2507 , H04B10/2557 , H04B10/61 , H04J14/06
CPC分类号： H04J14/06 , H04B10/2507 , H04B10/6165 , H04B10/6166 , H04L7/0075
摘要： A phase estimation method and apparatus for a polarization multiplexing system are provided. The method includes: performing, by a receive end, state of polarization rotation on a received first state of polarization signal and second state of polarization signal according to an angle of previous state of polarization rotation, and extracting a pilot by means of adaptive filtering; and performing carrier phase estimation according to the extracted pilot. This prevents a noise signal from being extracted and can make a carrier phase estimation result more accurate.
摘要翻译：提供了一种偏振复用系统的相位估计方法和装置。该方法包括：接收端根据偏振旋转的先前状态的角度，对接收到的第一偏振态信号和第二偏振态信号进行偏振旋转状态，并通过自适应滤波提取导频; 并根据提取的导频进行载波相位估计。这防止了噪声信号被提取并且可以使得载波相位估计结果更准确。

7. 发明公开

EP3122013A1 CODE MODULATION AND DEMODULATION METHOD, APPARATUS AND SYSTEM 有权
标题翻译： VERFAHREN，VORRICHTUNG UND SYSTEM ZUR CODEMODULATION UND -EMODULULATION
公开(公告)号：EP3122013A1
公开(公告)日：2017-01-25
申请号：EP14889760.6
申请日：2014-04-17
申请人： Huawei Technologies Co., Ltd.
发明人： HUANG, Yuanda
IPC分类号： H04L27/02
CPC分类号： H04L27/361 , H04L7/0037 , H04L27/3411 , H04L27/3455 , H04L27/38
摘要： The present invention relates to the field of signal processing, and discloses code modulation and demodulation methods, apparatuses, and a system, so as to reduce an envelope fluctuation degree of a signal and improve system performance. A specific implementation method includes: receiving, by a sending apparatus, N channels of bit signals, and performing serial-to-parallel conversion on any channel of bit signal of the N channels of bit signals, to generate two channels of first bit signals; performing delay control on the two channels of first bit signals, to generate two channels of code bit signals; performing QAM mapping on the two channels of code bit signals and other N-1 channels of bit signals, to generate a channel of quadrature electrical signal and a channel of in-phase electrical signal, where four quadrants of the in-phase electrical signal and the quadrature electrical signal are determined by bit values that correspond to the two channels of code bit signals at a same moment; and modulating the quadrature electrical signal and the in-phase electrical signal, to obtain a transmit signal, and sending the transmit signal. The present invention is applied to signal modulation and demodulation.
摘要翻译：本发明涉及信号处理领域，并且公开了码调制和解调方法，装置和系统，以减少信号的包络波动程度并提高系统性能。具体实现方法包括：由发送装置接收N个信道的位信号，并对N个信道的位信号的任何信道的任何信道进行串并转换，以产生两个信道的第一位信号; 对第一位信号的两个通道执行延迟控制，以产生两个通道的码位信号; 对两个信道的码位信号和其他N-1个信道的信号执行QAM映射，以产生正交电信号和同相电信号的信道，其中同相电信号的四个象限和正交电信号由相同时刻对应于两个通道的码位信号的位值确定; 并调制正交电信号和同相电信号，以获得发送信号，并发送发送信号。本发明适用于信号调制和解调。

8. 发明公开

EP2352239A1 A METHOD, DEVICE AND SYSTEM FOR OPTIC-DEMODULATING THE OPTICAL CARRIER OF POLARIZATION DIVISION MULTIPLEXING 审中-公开
标题翻译： VERFAHREN，VORRICHTUNG UND SYSTEM ZUR OPTISCHEN DEMODULATION DES OPTISCHENTRÄGERSBEI POLARISATIONS-MULTIPLEXING
公开(公告)号：EP2352239A1
公开(公告)日：2011-08-03
申请号：EP09821523.9
申请日：2009-06-23
申请人： Huawei Technologies Co., Ltd.
发明人： XIONG, Qianjin , LI, Liangchuan , HUANG, Yuanda
IPC分类号： H04B10/00
CPC分类号： H04B10/671 , H04B10/5165 , H04B10/676 , H04B2210/003 , H04J14/06
摘要： A method, device, and system for optical Polarization Division Multiplexing (PDM) of an optical carrier are provided, which can improve the frequency spectrum utilization ratio of the system, improve the Chromatic Dispersion (CD) and Polarization Mode Dispersion (PMD) tolerance, and meanwhile lower the apparatus requirements and complexity of a receiving end. The method includes: splitting an optical carrier into two or more sets of optical sub-carriers at a receiving end; respectively performing optical PDM on each set of the optical sub-carriers to obtain two sets of to-be-demodulated optical signals; and extracting a part of signals from each set of the to-be-demodulated signals to calculate features characterizing polarization states, controlling feedback signals according to the features, and correspondingly adjusting a polarization state of each set of the optical sub-carriers. With the device combining optical division into two or more sets of sub-carriers with optical PDM, an optical carrier signal can be split in an optical modulation format into four or more sets of signals for processing, and delay interference can be performed directly on an optical wave by using Differential Quadrature Phase Shifted Keying (DQPSK) demodulators to obtain by detection output signals.
摘要翻译：提供了一种光载波光学偏振分复用（PDM）的方法，装置和系统，可以提高系统的频谱利用率，提高色散（CD）和偏振模色散（PMD）容差，同时降低了接收端的设备要求和复杂性。该方法包括：在接收端将光载波分为两组或多组光子载波; 分别在每组光子载波上执行光PDM以获得两组要解调的光信号; 并从每组待解调信号中提取一部分信号，以计算表征极化状态的特征，根据特征控制反馈信号，并相应地调整每组光子载波的极化状态。通过将光分组合成具有光PDM的两组或多组副载波，光载波信号可以以光调制格式分割成四组或更多组信号进行处理，并且延迟干扰可以直接在通过使用差分正交相移键控（DQPSK）解调器，通过检测输出信号获得光波。

9. 发明公开

EP4246998A1 OPTICAL COMMUNICATION DEVICE AND OPTICAL COMMUNICATION METHOD 审中-实审
公开(公告)号：EP4246998A1
公开(公告)日：2023-09-20
申请号：EP21905134.9
申请日：2021-09-01
申请人： Huawei Technologies Co., Ltd.
发明人： LU, Xiaofeng , HUANG, Yuanda
IPC分类号： H04Q11/00 , H04B10/079
摘要： This application relates to the field of optical communication, and in particular, to an optical communication apparatus and an optical communication method. The optical communication apparatus may include a frequency locking module and a signal light generation module. The frequency locking module is configured to: generate a target wavelength control signal based on an optical frequency difference indication signal, and send the target wavelength control signal to the signal light generation module. The frequency locking module is further configured to generate a target electrical modulation signal based on a target optical frequency difference, a target electrical frequency difference, and to-be-transmitted bit information that are determined by using the optical frequency difference indication signal. The signal light generation module is configured to: generate third signal light based on the target wavelength control signal and the target electrical modulation signal, and send the third signal light to a second optical communication apparatus. According to embodiments of this application, interference that exists when a plurality of optical signals are multiplexed and that is caused by a frequency offset of signal light in a multi-subcarrier transmission process of an optical communication apparatus can be effectively reduced, so that quality of optical communication can be improved.

10. 发明公开

EP2993795A1 DECODING METHOD AND DECODER 有权
标题翻译： DECODIERUNGSVERFAHREN UND DECODIERER
公开(公告)号：EP2993795A1
公开(公告)日：2016-03-09
申请号：EP13885977.2
申请日：2013-05-31
申请人： Huawei Technologies Co., Ltd.
发明人： ZHANG, Lijia , HUANG, Yuanda
IPC分类号： H03M13/25
CPC分类号： H04L1/0054 , H03M13/256 , H04L1/0052 , H04L1/006
摘要： Embodiments of the present invention relate to the field of communications, and provide a decoding method and a decoder, which are used to reduce decoding complexity. The method includes: receiving a to-be-decoded signal; performing region decision on the to-be-decoded signal according to a region decision rule formed by S region decision formulas, to acquire a region decision result; acquiring N constellation points according to the decision result, where the N constellation points are separately constellation points that are in the N subsets and that are closest to the to-be-decoded signal; acquiring N non-encoded bits corresponding to the N constellation points, and branch metrics between the to-be-decoded signal and the N constellation points; and performing Viterbi decoding based on the branch metrics and the N non-encoded bits, and outputting a decoding result corresponding to the to-be-decoded signal. The present invention is applicable to a signal decoding scenario.
摘要翻译：本发明的实施例涉及通信领域，并且提供了用于降低解码复杂度的解码方法和解码器。该方法包括：接收待解码信号; 根据由S区域决策公式形成的区域判定规则对待解码信号进行区域决定，以获取区域判定结果; 根据决策结果获取N个星座点，其中N个星座点分别是在N个子集中并且最接近待解码信号的星座点; 获取对应于N个星座点的N个非编码比特，以及待解码信号和N个星座点之间的分支度量; 以及基于所述分支度量和所述N个未编码比特执行维特比解码，并且输出与所述待解码信号相对应的解码结果。本发明可应用于信号解码场景。

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