Method and apparatus for designing an improved transmit signal for use in a single ended line test (SELT)
US9185204B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2014 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Jul 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/306
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to methods and apparatuses of using a novel transmit signal that can be used to improve performance of various loop diagnostic features of SELT. In embodiments, a novel transmit signal uses a wide contiguous band of tones that includes frequencies in both upstream and downstream bands. In these and other embodiments of the invention, the SELT transmit signal is designed such that any crosstalk noise in adjacent lines appears as a burst of noise that falls within the limits of the FEC settings of the system such that it can be fully corrected without harming the performance of modems connected on the adjacent lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.