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公开(公告)号：US10673534B2
公开(公告)日：2020-06-02
申请号：US16425954
申请日：2019-05-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yanzhao Lu , Yuanda Huang
IPC: H04B10/516 , H04B10/60 , H04B10/556 , H04B10/25 , H04B1/68 , H04N21/61
Abstract: A signal processing method is provided. Under the method, a first digital signal can be obtained by an optical transmitter. The first digital signal is a one-dimensional bipolar digital signal. A spectral compression and filtering can be performed by the optical transmitter on the first digital signal to generate a second digital signal. A frequency shift can be performed by the optical transmitter on the second digital signal such that a center location of a spectrum of the frequency-shifted second digital signal is at a frequency of 0.
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公开(公告)号：US20190280777A1
公开(公告)日：2019-09-12
申请号：US16425954
申请日：2019-05-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yanzhao Lu , Yuanda Huang
IPC: H04B10/556 , H04B10/25 , H04B10/60
Abstract: A signal processing method is provided. Under the method, a first digital signal can be obtained by an optical transmitter. The first digital signal is a one-dimensional bipolar digital signal. A spectral compression and filtering can be performed by the optical transmitter on the first digital signal to generate a second digital signal. A frequency shift can be performed by the optical transmitter on the second digital signal such that a center location of a spectrum of the frequency-shifted second digital signal is at a frequency of 0.
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公开(公告)号：US09379820B2
公开(公告)日：2016-06-28
申请号：US13838288
申请日：2013-03-15
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yuanda Huang , Liangchuan Li , Ling Liu , Lei Liu
CPC classification number: H04B10/60 , H04B10/6161 , H04B10/6164 , H04L27/2657 , H04L27/2697
Abstract: The present invention relates to a method and a device. The method includes: mixing a multi-carrier optical signal with a local optical signal having the same center frequency as that of the multi-carrier optical signal; performing photoelectric conversion and analog-to-digital conversion on an optical signal obtained through the mixing to obtain a digital signal; performing FFT on the digital signal to obtain a frequency domain signal; grouping the frequency domain signal according to each frequency band corresponding to its respective carrier in the multi-carrier optical signal, and performing IFFT on each frequency domain signal group to obtain a corresponding time domain signal for each carrier; and performing data restoration on each time domain signal corresponding to its respective carrier to obtain data carried on each carrier. The solutions of the present invention only require one set of coherent reception device, and have low cost and low power consumption.
Abstract translation: 本发明涉及一种方法和装置。 该方法包括：将多载波光信号与具有与多载波光信号相同中心频率的本地光信号混合; 对通过混合获得的光信号执行光电转换和模数转换，以获得数字信号; 对数字信号执行FFT以获得频域信号; 根据多载波光信号中与其相应载波相对应的每个频带对频域信号进行分组，并对每个频域信号组执行IFFT，以获得每个载波的相应时域信号; 并对与其各自的载波相对应的每个时域信号执行数据恢复，以获得每个载波上承载的数据。 本发明的解决方案仅需要一组相干接收装置，并且具有低成本和低功耗。
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公开(公告)号：US20160080112A1
公开(公告)日：2016-03-17
申请号：US14954248
申请日：2015-11-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Lijia Zhang , Yuanda Huang
IPC: H04L1/00
CPC classification number: H04L1/0054 , H03M13/256 , H04L1/0052 , H04L1/006
Abstract: 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.
Abstract translation: 本发明的实施例涉及通信领域，并且提供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，并且输出与待解码信号相对应的解码结果。 本发明适用于信号解码场景。
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公开(公告)号：US11349698B2
公开(公告)日：2022-05-31
申请号：US17357605
申请日：2021-06-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanda Huang , Kexin Xiao , Bin Xia
Abstract: The present disclosure relates to modulation methods. One example method includes performing distribution matching (DM) encoding on N1 first bits to obtain N2 first symbols, determining N4 to-be-phase-modulated symbols whose signal powers are equal to a preset signal power from the N2 first symbols, performing phase modulation on the N4 to-be-phase-modulated symbols based on N3 second bits to obtain N4 second symbols, performing binary labeling (BL) encoding on the N4 second symbols and N2-N4 first symbols to obtain N5 BL encoded output bits, performing forward error correction (FEC) encoding on the N5 BL encoded output bits to obtain N6 FEC redundant bits, and performing quadrature amplitude modulation (QAM) mapping based on the N6 FEC redundant bits and the N5 BL encoded output bits to obtain N2 target QAM signals.
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Patent Agency Ranking
公开(公告)号：US11012267B2
公开(公告)日：2021-05-18
申请号：US16393885
申请日：2019-04-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanda Huang , Xie Wang , Liangchuan Li
IPC: H04L27/01 , H04L25/03 , H04B7/06 , H04B7/08 , H04B7/0413 , H04B1/7103 , H04W56/00 , H04B10/25 , H04J11/00
Abstract: A receiver in the present disclosure includes: a first input end, N first output ends, N baseband signal recovery modules, and a multiple-input multiple-output equalization module. Each baseband signal recovery module includes two second output ends; one second output end of each baseband signal recovery module is configured to output a baseband signal; and the other second output end is configured to output data enabling control information. The multiple-input multiple-output equalization module is configured to: control, based on N pieces of data enabling control information, a time sequence of N baseband signals entering the multiple-input multiple-output equalization module for equalization filtering processing, and perform equalization filtering processing on the N baseband signals by using N transmitters as references to obtain recovered data of the N transmitters. According to the embodiments of the present disclosure, asynchronous multi-transmitter data is received.
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公开(公告)号：US10805032B2
公开(公告)日：2020-10-13
申请号：US16435548
申请日：2019-06-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xie Wang , Yuanda Huang , Liangchuan Li
IPC: H04J14/00 , H04B10/2507 , H04B10/00
Abstract: Embodiments of this application provide a data transmission method, a terminal device, and a network side device. Encoding, by a terminal device, a first identifier by using a first code word which is selected from at least one code word by the terminal device; sending, by the terminal device, the encoded first identifier to a network side device; receiving, by the terminal device, a second identifier sent by the network side device; decoding, by the terminal device, the second identifier by using the first code word; when the decoded second identifier is the same as the first identifier, encoding, by the terminal device, subsequent data by using the first code word; and sending, by the terminal device, the encoded subsequent data to the network side device.
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公开(公告)号：US10374722B2
公开(公告)日：2019-08-06
申请号：US15982930
申请日：2018-05-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanda Huang , Liangchuan Li
IPC: H04B10/516 , H04B7/216 , H04B10/69 , H04B10/50 , H04L27/34 , H04B1/7087 , H04B10/2507 , H04L27/36 , H04B10/54 , H04J14/00 , H04B10/2569
Abstract: According to a signal transmitting method, a signal receiving method, and a related device and system, a generated single-wavelength optical carrier may be split into N subcarriers with a same wavelength by using a splitting device, corresponding data modulation and corresponding amplitude spread spectrum modulation are performed on the N subcarriers by using N spreading codes and N low-speed data signals obtained by deserializing a received high-speed data signal, to obtain N spread spectrum modulation signals, and the N spread spectrum modulation signals are combined and output. A multicarrier generation apparatus or the like having a relatively complex structure does not need to be used for optical carrier splitting, and spectrum spreading does not need to be performed in a phase modulation manner in which a plurality of delay units or controllable phase units are required.
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公开(公告)号：US10313050B2
公开(公告)日：2019-06-04
申请号：US15852940
申请日：2017-12-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yuanda Huang
IPC: H04B10/06 , H04J14/06 , H04B10/2507 , H04L7/00 , H04B10/61
Abstract: A phase estimation method and apparatus for a polarization multiplexing system, where the method includes performing, by a receive end, state of polarization (SOP) rotation on a received first SOP signal and second SOP signal according to an angle of previous SOP rotation, extracting a pilot using 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.
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公开(公告)号：US09729276B2
公开(公告)日：2017-08-08
申请号：US14954248
申请日：2015-11-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Lijia Zhang , Yuanda Huang
CPC classification number: H04L1/0054 , H03M13/256 , H04L1/0052 , H04L1/006
Abstract: 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.
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