Inventor
DOU LIANG
CN36 patents
⚠️ This page may combine multiple inventors who share the name “DOU LIANG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
30 patentsUS9859977B2Jan 2, 2018
Method for estimating channel power, method for monitoring frequency spectrum characteristic, apparatus and system
FUJITSU LTD24 citations94
US10263698B2Apr 16, 2019
Monitoring apparatus for optical signal to noise ratio, signal transmission apparatus and receiver
FUJITSU LTD2 citations73
US10243725B2Mar 26, 2019
Apparatus and method for generating transmitting sequence, training sequence synchronization apparatus and method, apparatus and method for estimating channel spacing and system
FUJITSU LTD2 citations73
US9998223B2Jun 12, 2018
Calculating apparatus and method for nonlinear weighting coefficient
FUJITSU LTD3 citations73
US9825699B2Nov 21, 2017
Method and apparatus for correcting inter-channel power imbalance and receiver
FUJITSU LTD3 citations73
US9654211B2May 16, 2017
Estimation apparatus and method for nonlinear distortion and receiver
FUJITSU LTD4 citations73
US9300401B2Mar 29, 2016
Updating apparatus and method for equalizer coefficient, receiver and otpical communication system
FUJITSU LTD4 citations73
US9825708B2Nov 21, 2017
Compensation apparatus and method for inter-channel nonlinear damage
FUJITSU LTD2 citations72
US10171162B2Jan 1, 2019
Apparatus and method for measuring frequency response characteristics of optical transmitter and optical receiver
FUJITSU LTD2 citations71
US10623128B2Apr 14, 2020
Apparatus and method for processing a frequency offset of a pilot and receiver
FUJITSU LTD1 citations62
US10491294B2Nov 26, 2019
Signal processing apparatus, apparatus and method for monitoring channel spacing and system
FUJITSU LTD1 citations62
US9160448B2Oct 13, 2015
Apparatus and method for estimating intra-channel nonlinear damage
FUJITSU LTD2 citations62
US9985801B2May 29, 2018
Apparatus and method for estimating a frequency offset, apparatus and method for estimating a channel spacing and system
FUJITSU LTD1 citations52
US9871581B2Jan 16, 2018
Monitoring apparatus and method for an optical signal-to-noise ratio and receiver
FUJITSU LTD0 citations52
US9832083B2Nov 28, 2017
Apparatus and method for detecting channel spacing and system
FUJITSU LTD1 citations52
US9698904B2Jul 4, 2017
Apparatus for monitoring optical signal to noise ratio, transmitter and communication system
FUJITSU LTD1 citations52
US9490901B2Nov 8, 2016
Bias monitoring method and apparatus and transmitter
FUJITSU LTD1 citations52
US9979471B2May 22, 2018
Method and apparatus for measuring a filtering characteristic, pre-equalizer and communication equipment
FUJITSU LTD0 citations51
US10771230B2Sep 8, 2020
Estimating apparatus for bias drift of transmitting end modulator, compensating apparatus and receiver
FUJITSU LTD0 citations42
US10439852B2Oct 8, 2019
Signal processing apparatus, signal transmitting apparatus and receiver
FUJITSU LTD0 citations42
US9882636B2Jan 30, 2018
Monitoring apparatus for an optical signal to noise ratio, signal transmission apparatus and receiver
FUJITSU LTD0 citations42
US9806922B2Oct 31, 2017
Apparatus for estimating channel spacing, apparatus for monitoring wavelength, and receiver
FUJITSU LTD0 citations42
US9143240B2Sep 22, 2015
Nonlinear compensating apparatus and method and transmitter
FUJITSU LTD0 citations42
US8891669B2Nov 18, 2014
Nonlinear compensating apparatus and method and transmitter
FUJITSU LTD0 citations42
US8891684B2Nov 18, 2014
Nonlinear estimating apparatus and method and receiver
FUJITSU LTD0 citations42
US10574350B2Feb 25, 2020
Method and apparatus for estimating direct current bias of optical modulator and receiver
FUJITSU LTD0 citations41
US10230469B2Mar 12, 2019
Apparatus for measuring a filtering characteristic, pre-equalizer and optical communication equipment
FUJITSU LTD0 citations41
US10225010B2Mar 5, 2019
Method and apparatus for measuring a filtering characteristic, pre-equalizer and communication equipment
FUJITSU LTD0 citations41
US10116388B2Oct 30, 2018
Apparatus for measuring a filtering characteristic, pre-equalizer and communication equipment
FUJITSU LTD0 citations41
US10367635B2Jul 30, 2019
Signal transmission apparatus, carrier phase recovery apparatus and method
FUJITSU LTD0 citations40