Liang DOU

Person

Beijing, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for calculating configuration of optical trans...
- Patent number 12,113,572
- Issue date Oct 8, 2024
- Alibaba (China) Co., Ltd.
- Liang Dou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Estimating apparatus for bias drift of transmitting end modulator,...
- Patent number 10,771,230
- Issue date Sep 8, 2020
- Fujitsu Limited
- Liang Dou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for processing a frequency offset of a pilot a...
- Patent number 10,623,128
- Issue date Apr 14, 2020
- Fujitsu Limited
- Huihui Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for estimating direct current bias of optical...
- Patent number 10,574,350
- Issue date Feb 25, 2020
- Fujitsu Limited
- Yangyang Fan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal processing apparatus, apparatus and method for monitoring ch...
- Patent number 10,491,294
- Issue date Nov 26, 2019
- Fujitsu Limited
- Huihui Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal processing apparatus, signal transmitting apparatus and rece...
- Patent number 10,439,852
- Issue date Oct 8, 2019
- Fujitsu Limited
- Liang Dou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal transmission apparatus, carrier phase recovery apparatus and...
- Patent number 10,367,635
- Issue date Jul 30, 2019
- Fujitsu Limited
- Xiaofei Su
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Monitoring apparatus for optical signal to noise ratio, signal tran...
- Patent number 10,263,698
- Issue date Apr 16, 2019
- Fujitsu Limited
- Liang Dou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for generating transmitting sequence, training...
- Patent number 10,243,725
- Issue date Mar 26, 2019
- Fujitsu Limited
- Ying Zhao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for measuring a filtering characteristic, pre-equalizer a...
- Patent number 10,230,469
- Issue date Mar 12, 2019
- Fujitsu Limited
- Yangyang Fan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for measuring a filtering characteristic, pre-...
- Patent number 10,225,010
- Issue date Mar 5, 2019
- Fujitsu Limited
- Zhenning Tao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for measuring frequency response characteristi...
- Patent number 10,171,162
- Issue date Jan 1, 2019
- Fujitsu Limited
- Cheng Ju
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for measuring a filtering characteristic, pre-equalizer a...
- Patent number 10,116,388
- Issue date Oct 30, 2018
- Fujitsu Limited
- Yangyang Fan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Calculating apparatus and method for nonlinear weighting coefficient
- Patent number 9,998,223
- Issue date Jun 12, 2018
- Fujitsu Limited
- Ying Zhao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for estimating a frequency offset, apparatus a...
- Patent number 9,985,801
- Issue date May 29, 2018
- Fujitsu Limited
- Ying Zhao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for measuring a filtering characteristic, pre-...
- Patent number 9,979,471
- Issue date May 22, 2018
- Fujitsu Limited
- Zhenning Tao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Monitoring apparatus for an optical signal to noise ratio, signal t...
- Patent number 9,882,636
- Issue date Jan 30, 2018
- Fujitsu Limited
- Liang Dou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Monitoring apparatus and method for an optical signal-to-noise rati...
- Patent number 9,871,581
- Issue date Jan 16, 2018
- Fujitsu Limited
- Liang Dou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for estimating channel power, method for monitoring frequenc...
- Patent number 9,859,977
- Issue date Jan 2, 2018
- Fujitsu Limited
- Ying Zhao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for detecting channel spacing and system
- Patent number 9,832,083
- Issue date Nov 28, 2017
- Fujitsu Limited
- Ying Zhao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for correcting inter-channel power imbalance a...
- Patent number 9,825,699
- Issue date Nov 21, 2017
- Fujitsu Limited
- Ying Zhao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Compensation apparatus and method for inter-channel nonlinear damage
- Patent number 9,825,708
- Issue date Nov 21, 2017
- Fujitsu Limited
- Yangyang Fan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for estimating channel spacing, apparatus for monitoring...
- Patent number 9,806,922
- Issue date Oct 31, 2017
- Fujitsu Limited
- Ying Zhao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for monitoring optical signal to noise ratio, transmitter...
- Patent number 9,698,904
- Issue date Jul 4, 2017
- Fujitsu Limited
- Liang Dou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Estimation apparatus and method for nonlinear distortion and receiver
- Patent number 9,654,211
- Issue date May 16, 2017
- Fujitsu Limited
- Ying Zhao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Bias monitoring method and apparatus and transmitter
- Patent number 9,490,901
- Issue date Nov 8, 2016
- Fujitsu Limited
- Ying Zhao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Updating apparatus and method for equalizer coefficient, receiver a...
- Patent number 9,300,401
- Issue date Mar 29, 2016
- Fujitsu Limited
- Liang Dou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for estimating intra-channel nonlinear damage
- Patent number 9,160,448
- Issue date Oct 13, 2015
- Fujitsu Limited
- Yangyang Fan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Nonlinear compensating apparatus and method and transmitter
- Patent number 9,143,240
- Issue date Sep 22, 2015
- Fujitsu Limited
- Liang Dou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Nonlinear compensating apparatus and method and transmitter
- Patent number 8,891,669
- Issue date Nov 18, 2014
- Fujitsu Limited
- Liang Dou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
FIBER SHUFFLE BOX, DATA PROCESSING METHOD AND COMPUTER STORAGE MEDIUM
- Publication number 20250219756
- Publication date Jul 3, 2025
- CLOUD INTELLIGENCE ASSETS HOLDING (SINGAPORE) PRIVATE LIMITED
- Huan ZHANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SPECTRUM ADJUSTMENT METHOD FOR OPTICAL TRANSMISSION SYSTEM AND NETW...
- Publication number 20240421933
- Publication date Dec 19, 2024
- Hangzhou AliCloud Feitian Information Technology Co., Ltd.
- Liang DOU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR CONTROLLING OPTICAL FIBER AMPLIFIER, SYSTE...
- Publication number 20240339800
- Publication date Oct 10, 2024
- HANGZHOU ALICLOUD FEITIAN INFORMATION TECHNOLOGY CO., LTD.
- Huan ZHANG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL TRANSMISSION SYSTEM AND DATA COMMUNICATION SYSTEM
- Publication number 20230194779
- Publication date Jun 22, 2023
- Alibaba (China) Co., Ltd.
- Sai CHEN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR CALCULATING CONFIGURATION OF OPTICAL TRANS...
- Publication number 20230198615
- Publication date Jun 22, 2023
- Alibaba (China) Co., Ltd.
- Liang DOU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR ESTIMATING DIRECT CURRENT BIAS OF OPTICAL...
- Publication number 20190222308
- Publication date Jul 18, 2019
- Fujitsu Limited
- Yangyang FAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SIGNAL PROCESSING APPARATUS, APPARATUS AND METHOD FOR MONITORING CH...
- Publication number 20170310440
- Publication date Oct 26, 2017
- Fujitsu Limited
- Huihui LI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPARATUS AND METHOD FOR PROCESSING A FREQUENCY OFFSET OF A PILOT A...
- Publication number 20170310416
- Publication date Oct 26, 2017
- Fujitsu Limited
- Huihui LI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPARATUS AND METHOD FOR MEASURING FREQUENCY RESPONSE CHARACTERISTI...
- Publication number 20170288771
- Publication date Oct 5, 2017
- Fujitsu Limited
- Cheng JU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPARATUS AND METHOD FOR ESTIMATING A FREQUENCY OFFSET, APPARATUS A...
- Publication number 20170272279
- Publication date Sep 21, 2017
- Fujitsu Limited
- Ying ZHAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPARATUS AND METHOD FOR GENERATING TRANSMITTING SEQUENCE, TRAINING...
- Publication number 20170272232
- Publication date Sep 21, 2017
- Fujitsu Limited
- Ying ZHAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SIGNAL TRANSMISSION APPARATUS, CARRIER PHASE RECOVERY APPARATUS AND...
- Publication number 20170250792
- Publication date Aug 31, 2017
- Fujitsu Limited
- Xiaofei SU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPARATUS FOR MEASURING A FILTERING CHARACTERISTIC, PRE-EQUALIZER A...
- Publication number 20170170902
- Publication date Jun 15, 2017
- FUJITSU LIMITED
- Yangyang FAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR MEASURING A FILTERING CHARACTERISTIC, PRE-...
- Publication number 20170170896
- Publication date Jun 15, 2017
- FUJITSU LIMITED
- Zhenning TAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPARATUS FOR MEASURING A FILTERING CHARACTERISTIC, PRE-EQUALIZER A...
- Publication number 20170170901
- Publication date Jun 15, 2017
- FUJITSU LIMITED
- Yangyang FAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR MEASURING A FILTERING CHARACTERISTIC, PRE-...
- Publication number 20170170897
- Publication date Jun 15, 2017
- FUJITSU LIMITED
- Zhenning TAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPARATUS AND METHOD FOR DETECTING CHANNEL SPACING AND SYSTEM
- Publication number 20170104643
- Publication date Apr 13, 2017
- FUJITSU LIMITED
- Ying ZHAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MONITORING APPARATUS FOR OPTICAL SIGNAL TO NOISE RATIO, SIGNAL TRAN...
- Publication number 20170104529
- Publication date Apr 13, 2017
- FUJITSU LIMITED
- Liang DOU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ESTIMATING APPARATUS FOR BIAS DRIFT OF TRANSMITTING END MODULATOR,...
- Publication number 20170104577
- Publication date Apr 13, 2017
- FUJITSU LIMITED
- Liang DOU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SIGNAL PROCESSING APPARATUS, SIGNAL TRANSMITTING APPARATUS AND RECE...
- Publication number 20160315724
- Publication date Oct 27, 2016
- FUJITSU LIMITED
- Liang DOU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD FOR ESTIMATING CHANNEL POWER, METHOD FOR MONITORING FREQUENC...
- Publication number 20160308612
- Publication date Oct 20, 2016
- FUJITSU LIMITED
- Ying ZHAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MONITORING APPARATUS FOR AN OPTICAL SIGNAL TO NOISE RATIO, SIGNAL T...
- Publication number 20160277105
- Publication date Sep 22, 2016
- FUJITSU LIMITED
- Liang DOU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MONITORING APPARATUS AND METHOD FOR AN OPTICAL SIGNAL-TO-NOISE RATI...
- Publication number 20160233955
- Publication date Aug 11, 2016
- FUJITSU LIMITED
- Liang DOU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPARATUS FOR ESTIMATING CHANNEL SPACING, APPARATUS FOR MONITORING...
- Publication number 20160226683
- Publication date Aug 4, 2016
- FUJITSU LIMITED
- Ying ZHAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR CORRECTING INTER-CHANNEL POWER IMBALANCE A...
- Publication number 20160226583
- Publication date Aug 4, 2016
- FUJITSU LIMITED
- Ying ZHAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CALCULATING APPARATUS AND METHOD FOR NONLINEAR WEIGHTING COEFFICIENT
- Publication number 20160036528
- Publication date Feb 4, 2016
- Fujitsu Limited
- Ying ZHAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPARATUS FOR MONITORING OPTICAL SIGNAL TO NOISE RATIO, TRANSMITTER...
- Publication number 20160013863
- Publication date Jan 14, 2016
- Fujitsu Limited
- Liang DOU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
BIAS MONITORING METHOD AND APPARATUS AND TRANSMITTER
- Publication number 20150318921
- Publication date Nov 5, 2015
- Fujitsu Limited
- Ying ZHAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ESTIMATION APPARATUS AND METHOD FOR NONLINEAR DISTORTION AND RECEIVER
- Publication number 20150295643
- Publication date Oct 15, 2015
- Fujitsu Limited
- Ying ZHAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMPENSATION APPARATUS AND METHOD FOR INTER-CHANNEL NONLINEAR DAMAGE
- Publication number 20150104189
- Publication date Apr 16, 2015
- Fujitsu Limited
- Yangyang FAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Person

Patents Grantslast 30 patents

Method and apparatus for calculating configuration of optical trans...

Estimating apparatus for bias drift of transmitting end modulator,...

Apparatus and method for processing a frequency offset of a pilot a...

Method and apparatus for estimating direct current bias of optical...

Signal processing apparatus, apparatus and method for monitoring ch...

Signal processing apparatus, signal transmitting apparatus and rece...

Signal transmission apparatus, carrier phase recovery apparatus and...

Monitoring apparatus for optical signal to noise ratio, signal tran...

Apparatus and method for generating transmitting sequence, training...

Apparatus for measuring a filtering characteristic, pre-equalizer a...

Method and apparatus for measuring a filtering characteristic, pre-...

Apparatus and method for measuring frequency response characteristi...

Apparatus for measuring a filtering characteristic, pre-equalizer a...

Calculating apparatus and method for nonlinear weighting coefficient

Apparatus and method for estimating a frequency offset, apparatus a...

Method and apparatus for measuring a filtering characteristic, pre-...

Monitoring apparatus for an optical signal to noise ratio, signal t...

Monitoring apparatus and method for an optical signal-to-noise rati...

Method for estimating channel power, method for monitoring frequenc...

Apparatus and method for detecting channel spacing and system

Method and apparatus for correcting inter-channel power imbalance a...

Compensation apparatus and method for inter-channel nonlinear damage

Apparatus for estimating channel spacing, apparatus for monitoring...

Apparatus for monitoring optical signal to noise ratio, transmitter...

Estimation apparatus and method for nonlinear distortion and receiver

Bias monitoring method and apparatus and transmitter

Updating apparatus and method for equalizer coefficient, receiver a...

Apparatus and method for estimating intra-channel nonlinear damage

Nonlinear compensating apparatus and method and transmitter

Nonlinear compensating apparatus and method and transmitter

Patents Applicationslast 30 patents

FIBER SHUFFLE BOX, DATA PROCESSING METHOD AND COMPUTER STORAGE MEDIUM

SPECTRUM ADJUSTMENT METHOD FOR OPTICAL TRANSMISSION SYSTEM AND NETW...

METHOD AND APPARATUS FOR CONTROLLING OPTICAL FIBER AMPLIFIER, SYSTE...

OPTICAL TRANSMISSION SYSTEM AND DATA COMMUNICATION SYSTEM

METHOD AND APPARATUS FOR CALCULATING CONFIGURATION OF OPTICAL TRANS...

METHOD AND APPARATUS FOR ESTIMATING DIRECT CURRENT BIAS OF OPTICAL...

SIGNAL PROCESSING APPARATUS, APPARATUS AND METHOD FOR MONITORING CH...

APPARATUS AND METHOD FOR PROCESSING A FREQUENCY OFFSET OF A PILOT A...

APPARATUS AND METHOD FOR MEASURING FREQUENCY RESPONSE CHARACTERISTI...

APPARATUS AND METHOD FOR ESTIMATING A FREQUENCY OFFSET, APPARATUS A...

APPARATUS AND METHOD FOR GENERATING TRANSMITTING SEQUENCE, TRAINING...

SIGNAL TRANSMISSION APPARATUS, CARRIER PHASE RECOVERY APPARATUS AND...

APPARATUS FOR MEASURING A FILTERING CHARACTERISTIC, PRE-EQUALIZER A...

METHOD AND APPARATUS FOR MEASURING A FILTERING CHARACTERISTIC, PRE-...

APPARATUS FOR MEASURING A FILTERING CHARACTERISTIC, PRE-EQUALIZER A...

METHOD AND APPARATUS FOR MEASURING A FILTERING CHARACTERISTIC, PRE-...

APPARATUS AND METHOD FOR DETECTING CHANNEL SPACING AND SYSTEM

MONITORING APPARATUS FOR OPTICAL SIGNAL TO NOISE RATIO, SIGNAL TRAN...

ESTIMATING APPARATUS FOR BIAS DRIFT OF TRANSMITTING END MODULATOR,...

SIGNAL PROCESSING APPARATUS, SIGNAL TRANSMITTING APPARATUS AND RECE...

METHOD FOR ESTIMATING CHANNEL POWER, METHOD FOR MONITORING FREQUENC...

MONITORING APPARATUS FOR AN OPTICAL SIGNAL TO NOISE RATIO, SIGNAL T...

MONITORING APPARATUS AND METHOD FOR AN OPTICAL SIGNAL-TO-NOISE RATI...

APPARATUS FOR ESTIMATING CHANNEL SPACING, APPARATUS FOR MONITORING...

METHOD AND APPARATUS FOR CORRECTING INTER-CHANNEL POWER IMBALANCE A...

CALCULATING APPARATUS AND METHOD FOR NONLINEAR WEIGHTING COEFFICIENT

APPARATUS FOR MONITORING OPTICAL SIGNAL TO NOISE RATIO, TRANSMITTER...

BIAS MONITORING METHOD AND APPARATUS AND TRANSMITTER

ESTIMATION APPARATUS AND METHOD FOR NONLINEAR DISTORTION AND RECEIVER

COMPENSATION APPARATUS AND METHOD FOR INTER-CHANNEL NONLINEAR DAMAGE