Method and apparatus for training vector coefficient of vectored digital subscriber line
US9712208B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2015 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Sep 20, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0224
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and an apparatus for training a Vector coefficient of a vectored digital subscriber line, where the method includes: after a handshake phase is executed for a joining line, calculating, by using a pilot estimation method, an initial precoding coefficient and an initial cancellation coefficient that represent interference from the joining line to a normal working line; and after a channel discovery phase is executed for the joining line, compensating the initial precoding coefficient and the initial cancellation coefficient by using a compensation factor, to obtain a precoding coefficient and a cancellation coefficient that represent the interference from the joining line to the normal working line, wherein the compensation factor is obtained according to a signal power change or a signal phase change of the joining line. The present invention improves efficiency of Vector coefficient training.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.