Receiver having decisional feedback equalizer with remodulation and related methods
US7418061B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2006 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Nov 15, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0061
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A receiver includes a filter stage that receives, filters, and equalizes a received signal, and a decisional feedback loop coupled to the filter stage that receives and processes a signal output from the filter stage using remodulation. The decisional feedback loop includes a converter that generates a baseband signal, a detector that generates a decision signal, a restorative signal generator that generates a restorative signal using remodulation, and a carrier loop that generates a frequency correction signal and provides a frequency-offset estimate. The restorative signal and the frequency correction signal are provided to the converter to compensate for inter-symbol interference. The presented “remodulation” technique decouples interaction between the carrier loop, the pre-filters, and the equalizer of the restorative signal generator, providing an architecture that is more stable and significantly faster than conventional architectures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.