Processor, modem and method for cancelling alien noise in coordinated digital subscriber lines
US8588286B2 · kind B2 · utility
1Cited by
2References
26Claims
0Family size
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Key dates
| Filing date | Apr 14, 2011 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Sep 8, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2601
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of cancelling alien noise in coordinated DSL lines, a method of smoothing an alien noise covariance estimate, and a processor and modem for cancelling alien noise in coordinated DSL lines. In one embodiment, the method of cancelling alien noise includes: (1) estimating alien noise vectors for at least some training symbols, (2) arranging the alien noise vectors in a matrix dimensioned for a number of coordinated DSL lines, (3) orthonormally transforming the matrix into a lower-triangular matrix and (4) computing alien noise prediction filters from the lower-triangular matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.