Method, device, and system for canceling crosstalk between lines in DSL system
US10033432B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 2016 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | Feb 11, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0048
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for canceling crosstalk between lines in a DSL system is presented. The method includes obtaining an upstream signal that is sent by corresponding customer premises equipment (CPE) and that is received by each central office (CO), forming an upstream signal sequence including upstream signals of all COs, obtaining a downstream signal that is sent by each CO to the CPE corresponding to each CO, and forming a downstream signal sequence including downstream signals of all the COs; performing FEXT cancellation processing on the upstream signal sequence to obtain a first signal sequence, and processing the downstream signal sequence to determine NEXT signals in the upstream signals of all the COs; and performing NEXT cancellation processing on the first signal sequence using the determined NEXT signals, to obtain a second signal sequence, and sending upstream signals in the second signal sequence to all the COs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.