DSL transmission system with far-end crosstalk compensation
US7023908B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 14, 2000 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Nov 9, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2601
- 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 transmitting discrete multitone symbols Si to corresponding network termination modems over n transmission channels. The invention multiplies the vector S=(Si) i=1 to n, before transmission, by a precompensation matrix M such that the matrix product H*M is diagonal, H being the transfer matrix of the plurality of downstream transmission channels defined by R=H*S where R=(Ri), i=1 to n, is the vector of the discrete multitone symbols Ri respectively received by the modems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.