Method and system for balancing an equalizer at a receiver
US8867603B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2013 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Sep 5, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03732
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A configurable analog equalizer is set to a first high-pass frequency response that is intentionally too moderate to compensate for a low-pass frequency response of a physical link coupling a transmitter and a receiver. A Feed Forward Equalizer (FFE) is activated at the receiver; the FFE includes a set of coefficients having a minimum configuration of a cursor coefficient and a first pre-cursor coefficient. A Decision Feedback Equalizer (DFE) is activated at the receiver; the DFE includes a set of coefficients having a minimum configuration of a first post-cursor coefficient. The configurable analog equalizer is then set to a high-pass frequency response that is more intense than the first high-pass frequency response, until the first post-cursor coefficient of the DFE substantially equals an absolute value of a quotient obtained by dividing the first pre-cursor coefficient of the FFE by the cursor coefficient of the FFE.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.