Adaptive equalization system for a signal receiver
US7496161B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2005 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Jun 13, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03038
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a communication receiver includes an adaptive filter, a clock and data recovery (CDR) unit, and an adaptation control unit. The adaptive filter equalizes an input signal received over a communication channel to generate a compensated signal. The CDR unit processes the compensated signal to generate a sampling clock signal, a data signal, and a transition signal, the transition signal comprising samples of the compensated signal taken at an edge of the sampling clock signal, the data signal comprising data recovered from the input signal. The adaptation control unit receives the sampling clock signal, data signal, and transition signal and uses them to generate a control signal. The control signal may be used to control a gain of an amplifier in the adaptive filter to equalize the input signal. The adaptive filter, CDR unit, and adaptation control unit may be implemented using electrical circuits disclosed herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.