Analog finite impulse response adaptation method and apparatus
US9020022B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 2013 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Aug 2, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0335
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A SerDes receiver comprising: an input for receiving a signal, the signal having a baud rate; an Analog Finite Impulse Response equalizer (AFIR) for equalizing the received signal, the AFIR comprising: a pre-cursor tap having a pre-cursor coefficient; a cursor tap having a cursor coefficient, the cursor coefficient being constrained to a non-negative value; and a post-cursor tap having a post-cursor coefficient; an adaptation block coupled to the AFIR, the adaptation block configured to adjust the pre-cursor coefficient and the post-cursor coefficient based on the received signal, the adaptation block further being configured to constrain the values of the pre-cursor and post-cursor coefficients to be non-positive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.