Methods and apparatus for decision feedback equalization adaptation
US9166832B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2013 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Oct 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03611
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A receiver circuit includes a feedback filter having multiple taps for receiving a quantized signal and outputting a feedback signal and adaptation circuitry for adapting tap weights of the feedback filter. In one embodiment, the tap weights may be adapted with variable update resolution. In another embodiment, the feedback filter may have fixed and floating taps. Other embodiments relate to methods of equalizing an input signal using a feedback filter. In one embodiment, tap weights of the feedback filter are adapted using adaptation circuitry with variable update resolution. In another embodiment, the adaptation circuitry adapts fixed and floating tap weights of the feedback filter. Other embodiments and features are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.