公开(公告)号：US20180287708A1

公开(公告)日：2018-10-04

申请号：US15982930

申请日：2018-05-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuanda HUANG ,  Liangchuan LI

IPC: H04B10/516 ,  H04B1/7087 ,  H04L27/36 ,  H04B10/2507

CPC classification number: H04B10/5161 ,  H04B1/7087 ,  H04B7/216 ,  H04B10/2507 ,  H04B10/2569 ,  H04B10/50 ,  H04B10/5053 ,  H04B10/54 ,  H04B10/697 ,  H04B2201/709709 ,  H04J14/005 ,  H04L27/34 ,  H04L27/366

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：US20230275670A1

公开(公告)日：2023-08-31

申请号：US18308746

申请日：2023-04-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shuai YUAN ,  Tao GUI ,  Liangchuan LI

IPC: H04B10/50 ,  H04J14/02 ,  H04B10/61 ,  H04B10/532

CPC classification number: H04B10/503 ,  H04J14/02 ,  H04B10/61 ,  H04B10/532

Abstract: A first optical transmission device includes a plurality of first lasers having a different corresponding wavelength, a first optical path component, a first modulator, and a first processor portion. The plurality of first lasers is connected to a plurality of optical input ports of the first optical path component respectively. The first optical path component is configured to perform multiplexing on continuous light of different wavelengths emitted by the plurality of first lasers, and perform power splitting of multiplexed continuous light thereby obtaining two paths of continuous light, send a first path of continuous light to the first modulator, and send a second path of continuous light to a second optical transmission device at a peer end. The first processor portion is configured to send a first analog signal to the first modulator. The first modulator is configured to at least modulate the first analog signal onto the first path.

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：US20180138984A1

公开(公告)日：2018-05-17

申请号：US15852561

申请日：2017-12-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuanyuan FANG ,  Liangchuan LI

IPC: H04B10/516 ,  H04L27/20 ,  H04B10/255 ,  H04L27/26

CPC classification number: H04B10/5161 ,  H04B10/2543 ,  H04B10/255 ,  H04B10/548 ,  H04L5/0007 ,  H04L27/2096 ,  H04L27/2602 ,  H04L27/2628 ,  H04L27/2647

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.

公开(公告)号：US20130108277A1

公开(公告)日：2013-05-02

申请号：US13718800

申请日：2012-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei LIU ,  Liangchuan LI ,  Bangning MAO

IPC: H04B10/12

CPC classification number: H04B10/5561 ,  H04B10/5053 ,  H04B10/541 ,  H04L27/2096

Abstract: A signal generating method and apparatus in the field of signal technologies are provided. The method includes: adjusting an incident angle of an optical signal entering a polarization beam splitter, so that the polarization beam splitter outputs a first optical signal and a second optical signal that have a preset power ratio; performing QPSK modulation on the first and second optical signal respectively by using a first and second externally input data streams, to obtain a first and a second QPSK optical signal; before the first QPSK optical signal and the second QPSK optical signal are input into a polarization beam combiner, adjusting a polarization state of the first or the second QPSK optical signal; when the polarization states of the two QPSK optical signals are the same, outputting a 16QAM signal; and when the polarization states of the two QPSK optical signals are orthogonal, outputting a DP-QPSK signal.

Abstract translation: 提供了信号技术领域的信号产生方法和装置。 该方法包括：调整进入偏振分束器的光信号的入射角，使得偏振分束器输出具有预设功率比的第一光信号和第二光信号; 通过使用第一和第二外部输入数据流分别对第一和第二光信号执行QPSK调制，以获得第一和第二QPSK光信号; 在将第一QPSK光信号和第二QPSK光信号输入到偏振光束组合器之前，调整第一或第二QPSK光信号的偏振状态; 当两个QPSK光信号的极化状态相同时，输出16QAM信号; 并且当两个QPSK光信号的偏振态正交时，输出DP-QPSK信号。