Issued Patents All Time
Showing 51–75 of 118 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9998223 | Calculating apparatus and method for nonlinear weighting coefficient | Ying Zhao, Liang Dou | 2018-06-12 |
| 9985801 | Apparatus and method for estimating a frequency offset, apparatus and method for estimating a channel spacing and system | Ying Zhao, Liang Dou | 2018-05-29 |
| 9979471 | Method and apparatus for measuring a filtering characteristic, pre-equalizer and communication equipment | Yangyang Fan, Liang Dou | 2018-05-22 |
| 9973272 | Method and apparatus for monitoring in-line signal quality and system | Lei Li, Bo Liu | 2018-05-15 |
| 9960863 | Estimation apparatus and method for a nonlinear characteristic | Hao Chen, Lei Li | 2018-05-01 |
| 9882636 | Monitoring apparatus for an optical signal to noise ratio, signal transmission apparatus and receiver | Liang Dou | 2018-01-30 |
| 9871581 | Monitoring apparatus and method for an optical signal-to-noise ratio and receiver | Liang Dou | 2018-01-16 |
| 9859977 | Method for estimating channel power, method for monitoring frequency spectrum characteristic, apparatus and system | Ying Zhao, Liang Dou | 2018-01-02 |
| 9853767 | Method and apparatus for determining nonlinear characteristic and system | Hao Chen | 2017-12-26 |
| 9832083 | Apparatus and method for detecting channel spacing and system | Ying Zhao, Liang Dou | 2017-11-28 |
| 9825699 | Method and apparatus for correcting inter-channel power imbalance and receiver | Ying Zhao, Liang Dou, Taku Saito, Takeshi Hoshida | 2017-11-21 |
| 9825708 | Compensation apparatus and method for inter-channel nonlinear damage | Yangyang Fan, Liang Dou | 2017-11-21 |
| 9806922 | Apparatus for estimating channel spacing, apparatus for monitoring wavelength, and receiver | Ying Zhao, Liang Dou | 2017-10-31 |
| 9780812 | Information transmission apparatus, information detection apparatus and transmitter | Hao Chen | 2017-10-03 |
| 9774399 | Nonlinear compensation method and apparatus and system in multicarrier optical communication system | Lei Li | 2017-09-26 |
| 9749166 | Estimation apparatus and compensation apparatus for clipping distortion of multicarrier signals and receiver | Hao Chen | 2017-08-29 |
| 9698904 | Apparatus for monitoring optical signal to noise ratio, transmitter and communication system | Liang Dou | 2017-07-04 |
| 9654211 | Estimation apparatus and method for nonlinear distortion and receiver | Ying Zhao, Liang Dou | 2017-05-16 |
| 9646116 | Nonlinear term selection apparatus and method, identification system and compensation system | Bo Liu, Weizhen Yan, Lei Li | 2017-05-09 |
| 9490901 | Bias monitoring method and apparatus and transmitter | Ying Zhao, Liang Dou | 2016-11-08 |
| 9450675 | Method and apparatus for estimating cross-phase modulation impairments | Yinwen Cao, Weizhen Yan | 2016-09-20 |
| 9300401 | Updating apparatus and method for equalizer coefficient, receiver and otpical communication system | Liang Dou | 2016-03-29 |
| 9264214 | Phase detection method and apparatus for clock recovery | Meng Yan | 2016-02-16 |
| 9258060 | Method and apparatus for compensating nonlinear distortions in intensity modulation-direct detection system | Weizhen Yan, Bo Liu, Lei Li, Toshiki Tanaka | 2016-02-09 |
| 9258077 | Butterfly filter coefficient setting method and device, receiver and receiving method | Meng Yan | 2016-02-09 |