Method and apparatus for baseline wander compensation in Ethernet application
US8107573B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2007 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Jun 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/4919
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An embodiment of the proposed invention is primarily applied to compensate the BLW in communication systems using THPs in their transmitters, especially suitable for the 10GBase-T Ethernet application. The present apparatus includes an additional decision device (slicer) used to generate DC offset information (error signal) and an extra modulus unit after our BLW compensator to reconvert compensated symbols to correct 16-PAM signals. In addition, the estimated error signals in our method are generated from the difference between the input of the BLW compensator and the output of the decision device. These error signals are then weighted to alleviate the impact of erroneous DC offset information on the performance of the BLW compensator. Therefore, a more direct and accurate DC offset information can be derived to improve the inaccurate BLW estimation in previous works.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.