Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11637684 | Clock extraction in systems affected by strong intersymbol interference | — | 2023-04-25 |
| 11101891 | Auxiliary channel in PAM/QAM systems using redundant constellation points | Liang Zhang, Cristian Prodaniuc, Jinlong Wei, Changsong Xie | 2021-08-24 |
| 11025405 | High capacity optical data transmission using intensity-modulation and direct-detection | Changsong Xie | 2021-06-01 |
| 11018908 | Pulse amplitude modulation level optimization and equalization in optical systems | — | 2021-05-25 |
| 11018768 | Transmission systems with controlled bit probabilities | — | 2021-05-25 |
| 10841135 | Target constellation diagram determining method, data sending method, and apparatus | Mo Li, Velimir Ilic, Ivan B. Djordjevic, Franko Kueppers | 2020-11-17 |
| 9916240 | Interleaver and de-interleaver for correcting a burst bit error | Yu Zhao, Yang Li | 2018-03-13 |
| 9906307 | Apparatus for characterizing a chromatic dispersion of an optical receive signal | — | 2018-02-27 |
| 8930430 | Chromatic dispersion estimator and method for estimating a chromatic dispersion | — | 2015-01-06 |
| 8909068 | Skew estimator, skew compensator and coherent receiver | — | 2014-12-09 |
| 8879661 | Signal processing apparatus, transmitter, receiver and method | — | 2014-11-04 |
| 8837656 | Phase detection method and circuit | — | 2014-09-16 |
| 8601357 | Method for obtaining a set of path metrics and equalizer for a receiver for digital data | Stefan Langenbach | 2013-12-03 |
| 8601356 | Method and circuit for BER estimation | Stefan Langenbach | 2013-12-03 |
| 8466713 | Phase detection method and phase detector | Theodor Kupfer, James Whiteaway, Jurgen Hauenschild, Soeren Gehrke | 2013-06-18 |
| 8397149 | Methods for obtaining a set of path metrics and equalizer for a receiver for digital data | Stefan Langenbach | 2013-03-12 |
| 8335948 | Tail extrapolator and method | — | 2012-12-18 |
| 7738602 | Channel estimation and sequence for the reception of optical signal | Stefan Langenbach | 2010-06-15 |
| 7319363 | Method and circuit for controlling amplification | Stefan Langenbach | 2008-01-15 |