Offset and decision feedback equalization calibration
US9071481B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2012 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Aug 10, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03885
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A decision feedback equalizer is calibrated to compensate for estimated inter-symbol interference in a received signal and offsets of sampling devices. The decision feedback equalizer is configured so that an output signal of a sampling circuit represents a comparison between an input signal and a reference of the sampling circuit under calibration. An input signal is received over a communication channel that includes a predetermined pattern. The predetermined pattern is compared to the output signal to determine an adjusted reference for configuring the sampling circuit that accounts for both offset and inter-symbol interference effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.