Systems and methods for mitigating the effects of upstream far-end cross talk
US7835368B2 · kind B2 · utility
7Cited by
4References
25Claims
0Family size
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Key dates
| Filing date | May 20, 2008 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Oct 13, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03522
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is described for reducing self-induced far end crosstalk (self-FEXT) in a multiple input multiple output (MIMO) digital subscriber line (xDSL) system. An initial value for an off-diagonal multiple input multiple output canceller (ODMC) is derived while the ODMC is inactive and while in data mode. The method includes activating the initial ODMC and converging towards an steady-state value for the ODMC by performing an adaptive algorithm to maximize the Shannon's capacity of the system and to reduce upstream self-FEXT. Bit loading is performed and a frequency domain equalizer (FEQ) is updated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.