Systems and methods for MIMO precoding in an xDSL system
US8194767B2 · kind B2 · utility
5Cited by
2References
22Claims
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Key dates
| Filing date | Apr 21, 2011 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Apr 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0042
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
One embodiment is a method for precoding data for transmission in a discrete multi-tone (DMT) system to cancel self-induced far end crosstalk (self-FEXT). The method comprises learning, by the system, characteristics associated with a plurality of N users within a digital subscriber line (xDSL) system to determine an initial off-diagonal multiple input multiple output (MIMO) precoder (ODMP) for a given tone frequency and converging towards an ODMP from the initial ODMP to cancel self-FEXT for the plurality of N users, wherein the ODMP is represented as a zero diagonal matrix containing only off-diagonal terms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.