Method and apparatus for reducing cross-talk in broadband systems using line-coding
US6069922A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1997 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Nov 14, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
To accommodate the overlay of broadband information over narrowband bearers while reducing cross-talk in upstream and downstream directions, different baseband line codes are used to modulate respective upstream and downstream transmissions on a common wireline communication resource, such as a twisted copper-pair. In this way, filtering components located at each end of a connection can reject cross-talk based upon dissimilar signal characteristics that arise between wanted broadband signals having a first baseband line code and spectrally-shifted cross-talk emanating from interfering broadband signals having a different baseband line code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.