Method and apparatus for equalizing a digital signal received via multiple transmission paths
US6526093B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1999 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Mar 4, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03694
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a receiver, an adaptive decision feedback equalizer receives broadcast signals having multipath interference. The equalizer includes a feed-forward, a feedback, and a partial feedback forward filter. The equalizer also includes a slicer and two accumulators. An output from the slicer is processed by the feedback filter and the partial feedback filter. The output from the feedback filter is subtracted from output of the feed-forward filter to form the input to the slicer, and the output of the partial feedback filter is subtracted from the received signal to form the input for the feed-forward filter to reduce the multipath interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.