Dynamic target margin adaptation for DSL transmission lines
US8983060B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2011 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Apr 19, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and arrangement is proposed for adaptively generating a target noise margin for use on a DSL transmission line. The method includes determining a first quantity representing a current noise power on the line using line parameter data relating to the transmission performance of the line, determining a second quantity representing a worst-case noise power on said line using previously obtained values of the line parameter data, calculating the difference between the first and second quantities to generate a difference value, setting a target noise margin as at least equal to said difference value, and providing the target noise margin for use on the line upon initialisation of the line. In a preferred embodiment, the line parameter data is the bit loading on the line and the first and second quantities are values of the average signal-to-noise ratio on the line derived from the bit loading data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.