Block decision feedback equalization method and apparatus
US6760374B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2000 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Jul 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03796
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for receiving data over a dispersive media is disclosed. The received signal is composed of an unknown data segment preceded and followed by known data segments. The communication apparatus generates a replica of the known data segments. Channel characteristics existing at the time of transmission of the known data segments are estimated by comparing the known data segments with the replica. The symbols of the unknown data segment are then determined via application of a QR factorization. Factorization can be accomplished via Householder transformation, Givens rotation or fast Givens rotation. Decisions can be made on the various unknown symbols as they are analyzed and then fed back via back substitution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.