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公开(公告)号：US20130024741A1
公开(公告)日：2013-01-24
申请号：US13627768
申请日：2012-09-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Liangchuan Li
IPC: H03M13/29
CPC classification number: H04L1/0057 , H04B10/6971 , H04L1/0047 , H04L1/0083 , H04L25/03006 , H04L25/03019 , H04L2025/03649
Abstract: The present invention provides a data processing method, a data processing system and a receiver. The method includes: performing optical-to-electrical conversion processing on a received current optical data signal, to generate a current electric data signal; performing analog-digital conversion processing on the current electric data signal, to generate a current data block; performing equalization processing on the current data block according to a previous second output data block, to generate a current first output data block, where the previous second output data block is generated by performing forward error correction decoding processing on a previous first output data block, and the previous first output data block is generated by performing equalization processing on a previous data block of the current data block; and performing forward error correction decoding processing on the current first output data block, to generate a current second output data block.
Abstract translation: 本发明提供一种数据处理方法，数据处理系统和接收机。 该方法包括：对所接收的当前光数据信号执行光电转换处理，以产生当前电数据信号; 对当前电数据信号执行模拟数字转换处理，以产生当前数据块; 根据先前的第二输出数据块对当前数据块执行均衡处理，以产生当前的第一输出数据块，其中通过对先前的第一输出数据块执行前向纠错解码处理来生成前一个第二输出数据块， 并且通过对当前数据块的先前数据块执行均衡处理来生成先前的第一输出数据块; 对当前的第一输出数据块进行前向纠错解码处理，生成当前的第二输出数据块。
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公开(公告)号：US20240236532A1
公开(公告)日：2024-07-11
申请号：US18614095
申请日：2024-03-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Gengchen Liu , Yanzhao Lu , Liangchuan Li
IPC: H04Q11/00
CPC classification number: H04Q11/0067 , H04Q2011/0086
Abstract: Embodiments of this application disclose an upstream transmission resource allocation method and a related device. First, an OLT determines an upstream rate threshold of an ONU based on transmission quality information of upstream data sent by the ONU. The OLT further obtains a to-be-transmitted data amount of the ONU. Then, the OLT determines an upstream transmission timeslot of the ONU and an upstream transmission rate of the ONU. The upstream transmission rate of the ONU is less than or equal to the upstream rate threshold. The ONU is configured to send data of the to-be-transmitted data amount to the OLT in the upstream transmission timeslot based on the upstream transmission rate.
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33.发明授权公开(公告)号：US11777611B2
公开(公告)日：2023-10-03
申请号：US17853067
申请日：2022-06-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tao Gui , Liangchuan Li
IPC: H04B10/00 , H04B10/61 , H04B10/2575 , H04J14/00
CPC classification number: H04B10/614 , H04B10/25759 , H04B10/6151
Abstract: A coherent optical receiving apparatus including a polarization optical splitter, a polarization controller, an optical hybrid unit, and a combiner. The polarization optical splitter is connected to an input terminal of the optical hybrid unit, and an output terminal of the optical hybrid unit is connected to the combine. The polarization optical splitter receives signal light and local oscillator light in any polarization mode, decomposes the signal light into a plurality of beams of sub signal light, and decomposes the local oscillator light into a plurality of beams of sub local oscillator light. The optical hybrid unit obtains a plurality of beams of hybrid light by performing optical hybridization on the sub signal and sub local oscillator lights, the combiner performs conversion on the plurality of beams of hybrid light to obtain and output coherent electrical signals, and the polarization controller controls polarization of the local oscillator light.
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34.发明申请公开(公告)号：US20220345224A1
公开(公告)日：2022-10-27
申请号：US17853067
申请日：2022-06-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tao Gui , Liangchuan Li
IPC: H04B10/61 , H04B10/2575
Abstract: A coherent optical receiving apparatus including a polarization optical splitter, a polarization controller, an optical hybrid unit, and a combiner. The polarization optical splitter is connected to an input terminal of the optical hybrid unit, and an output terminal of the optical hybrid unit is connected to the combine. The polarization optical splitter receives signal light and local oscillator light in any polarization mode, decomposes the signal light into a plurality of beams of sub signal light, and decomposes the local oscillator light into a plurality of beams of sub local oscillator light. The optical hybrid unit obtains a plurality of beams of hybrid light by performing optical hybridization on the sub signal and sub local oscillator lights, the combiner performs conversion on the plurality of beams of hybrid light to obtain and output coherent electrical signals, and the polarization controller controls polarization of the local oscillator light.
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公开(公告)号：US11387907B2
公开(公告)日：2022-07-12
申请号：US17229005
申请日：2021-04-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ping Zhao , Liangchuan Li , Xinhua Xiao
Abstract: One example optical transceiver includes an optical interface, an optical receiver, and a polarization-maintaining optical waveguide, where the optical receiver includes a mixer, an optical-to-electrical converter, an analog-to-digital converter, and a digital signal processor. The optical interface is configured to receive first local oscillator light from a laser outside the optical transceiver; the mixer is configured to receive the local oscillator light and receive signal light modulated on laser light; the polarization-maintaining optical waveguide is configured to connect the optical interface and the optical receiver, where a polarization state of the local oscillator light remains unchanged when being transmitted in the polarization-maintaining optical waveguide; the optical-to-electrical converter and an analog-to-digital converter are configured to perform optical-to-electrical conversion and analog-to-digital conversion on the mixed light to obtain a digital electrical signal; and the digital signal processor is configured to process the digital electrical signal to obtain data.
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Patent Agency Ranking
公开(公告)号：US11018775B2
公开(公告)日：2021-05-25
申请号：US16791381
申请日：2020-02-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yi Yu , Yuanda Huang , Liangchuan Li , Xie Wang
IPC: H04B10/556 , H04B1/707 , H04B10/61 , H04J14/00 , H04B10/516 , H04B10/50
Abstract: An optical transmitter, an optical receiver, and an optical transmission method are disclosed. The optical transmitter includes an optical signal generator, N spreaders, N pairs of data modulators, and a combiner, where the optical signal generator generates N optical carriers; an ith spreader spreads an ith optical carrier, to obtain a spread optical signal having two subcarriers; splits the spread optical signal into a first optical signal and a second optical signal; and delays the second optical signal to obtain a third optical signal; an ith pair of data modulators modulate the first optical signal and the third optical signal to obtain a pair of modulated optical signals, transmit the pair of modulated optical signals to the combiner, where the pair of modulated optical signals reaching the combiner differ by 1/(4 fsi) in time domain; and the combiner combines, into one optical signal, N pairs of modulated optical signals.
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公开(公告)号：US10958352B2
公开(公告)日：2021-03-23
申请号：US16517214
申请日：2019-07-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanda Huang , Liangchuan Li
IPC: H04B10/516 , H04B7/216 , H04B10/69 , H04B10/50 , H04L27/34 , H04B10/54 , H04J14/00 , H04B1/7087 , H04B10/2507 , H04L27/36 , 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：US10778253B2
公开(公告)日：2020-09-15
申请号：US15965250
申请日：2018-04-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhiyu Xiao , Ling Liu , Liangchuan Li
Abstract: An embodiment method includes: performing balancing processing on a data stream that includes a plurality of sub-data stream segments, and performing segment de-interleaving on a data stream obtained after the balancing processing. The method further includes separately performing forward error correction (FEC) decoding on each sub-data stream segment in a data stream obtained after the segment de-interleaving. The method further includes performing, according to a balancing termination state of each sub-data stream segment obtained after previous balancing processing, balancing processing on each sub-data stream segment obtained after the FEC decoding, and performing FEC decoding on the data stream obtained after balancing processing is performed on each sub-data stream segment. When it is determined that a preset iteration termination condition is met, the method includes outputting the data stream obtained after the FEC decoding.
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公开(公告)号：US10313016B2
公开(公告)日：2019-06-04
申请号：US15852561
申请日：2017-12-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanyuan Fang , Liangchuan Li
IPC: H04B10/04 , H04B10/516 , H04B10/255 , H04L27/20 , H04L27/26 , H04L5/00 , H04B10/2543 , H04B10/548
Abstract: Embodiments of the present invention provide data transmission and receiving methods based on an orthogonal frequency division multiplexing technology, and an apparatus. According to the present invention, grouping and differential encoding are performed on multiple subcarriers, and further, carrier location adjustment is performed, so as to effectively improve non-linear tolerance of a multi-subcarrier system.
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公开(公告)号：US10116400B2
公开(公告)日：2018-10-30
申请号：US15709056
申请日：2017-09-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yuanda Huang , Liangchuan Li
IPC: H04B10/572 , H04B17/21 , H04B10/079 , H04B10/61 , H04B17/11 , H04B10/50 , H04J14/02
Abstract: The present invention discloses an optical signal frequency calibration method and device. The method includes: receiving a first optical signal that experiences a frequency offset and that is generated by a laser in a transmitter of an access node; receiving a reference optical signal sent by a local oscillator; calculating a difference between a specified frequency difference and a frequency difference between the reference optical signal and the first optical signal; and performing frequency calibration on the first optical signal according to the difference, modulating to-be-sent uplink data by using the calibrated first optical signal, and sending the modulated uplink data to a primary node.
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