-
公开(公告)号：US20210266097A1
公开(公告)日：2021-08-26
申请号：US17316817
申请日：2021-05-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanda HUANG , Bin XIA
Abstract: A decoding method performed by a receive end device is disclosed. The decoding method includes: receiving a first bit signal; performing 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 the second bit signal to obtain a first check result; performing level-(M+1) FEC decoding on the second bit signal based on the first check result to obtain a third bit signal; and, upon determining that M+1 reaches a first preset threshold, performing 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.
-
公开(公告)号：US20200186255A1
公开(公告)日：2020-06-11
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 , H04B10/61 , H04J14/00 , H04B1/707
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.
-
公开(公告)号：US20190253285A1
公开(公告)日：2019-08-15
申请号：US16393885
申请日：2019-04-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanda HUANG , Xie WANG , Liangchuan LI
IPC: H04L25/03 , H04L27/01 , H04B7/0413 , H04B7/06 , H04B7/08
CPC classification number: H04L25/03949 , H04B7/0413 , H04B7/0695 , H04B7/088 , H04J13/00 , H04L25/03273 , H04L27/01 , H04W56/00
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.
-
公开(公告)号：US20200014418A1
公开(公告)日：2020-01-09
申请号：US16564022
申请日：2019-09-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yi YU , Yuanda HUANG , Liangchuan LI
Abstract: Embodiments described and shown provide a signal transmission method, a signal receiving method, a related device, and a system. The signal transmission method includes: generating a single-wavelength optical carrier; splitting the single-wavelength optical carrier into N subcarriers having a same wavelength; generating a spreading code corresponding to each of the subcarriers to obtain N spreading codes, where a bandwidth of each of the spreading codes is less than or equal to a preset threshold; deserializing a to-be-transmitted data signal into N sub-data signals; modulating the N subcarriers based on the N sub-data signals and the N spreading codes, to obtain N modulation signals; and combining the N modulation signals into one combined signal, and outputting the combined signal.
-
公开(公告)号：US20190296848A1
公开(公告)日：2019-09-26
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
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.
-
Patent Agency Ranking
公开(公告)号：US20180006740A1
公开(公告)日：2018-01-04
申请号：US15709056
申请日：2017-09-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yuanda HUANG , Liangchuan LI
CPC classification number: H04B17/21 , H04B10/0795 , H04B10/503 , H04B10/572 , H04B10/61 , H04B17/11 , 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.
-
公开(公告)号：US20230319449A1
公开(公告)日：2023-10-05
申请号：US18331345
申请日：2023-06-08
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xiaofeng LU , Yuanda HUANG
IPC: H04Q11/00
CPC classification number: H04Q11/0067 , H04Q2011/0088 , H04Q2011/0083
Abstract: An 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.
-
公开(公告)号：US20210320835A1
公开(公告)日：2021-10-14
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.
-
公开(公告)号：US20190342008A1
公开(公告)日：2019-11-07
申请号：US16517214
申请日：2019-07-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanda HUANG , Liangchuan LI
IPC: H04B10/516 , H04B10/54 , H04B10/69 , H04B7/216 , H04L27/36 , H04L27/34 , H04J14/00 , H04B1/7087 , H04B10/50 , H04B10/2507
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.
-
公开(公告)号：US20190253177A1
公开(公告)日：2019-08-15
申请号：US16398169
申请日：2019-04-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xie WANG , Yuanda HUANG , Liangchuan LI
IPC: H04J14/06 , H04B10/2569 , H04B7/10 , H04J14/02
CPC classification number: H04J14/06 , H04B7/10 , H04B10/2507 , H04B10/2569 , H04J14/0238 , H04J14/0282
Abstract: Embodiments of the present invention provide a receiver and a data receiving method. The receiver includes: two first input ends, configured to receive a digital signal of an X-polarization state and a digital signal of a Y-polarization state; a despreading module, configured to despread the digital signal of the X-polarization state and the digital signal of the Y-polarization state based on N delay values and spreading codes of N transmitters, to obtain N first baseband signals and N second baseband signals; and a multiple-input multiple-output equalization module, configured to perform equalization filtering processing on the N first baseband signals and the N second baseband signals, to obtain recovered data of the first polarization states and recovered data of the second polarization states of the N transmitters. In the embodiments of the present invention, the coherent CDMA multipoint-to-point data transmission in an optical communications system is implemented.
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.015 seconds)
