DSL transmission system with far-end crosstalk cancellation
US6987800B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 14, 2000 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | May 10, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/32
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to a far-end crosstalk canceling circuit for a digital subscriber line transmission system, the transmission system including a plurality of line termination modems receiving discrete multitone symbols from corresponding network termination modems over a plurality of transmission channels. The invention estimates the modulated data actually transmitted by the network termination modems from the frequency components of the discrete multitone symbols received by the line termination modems and to evaluate the far-end crosstalk as a linear combination of these estimates. Far-end crosstalk cancellation for all the line termination modems is also provided in a centralized manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.