DSL transmitter with digital filtering using a Tomlinson-Harashima precoder
US6411657B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1999 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Dec 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03343
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A high-speed transmitter, which generates an output signal stream having a specified spectral profile. The transmitter includes a Tomlinson-Harashima precoder, which is adapted to receive a sequence of input symbols having a given input constellation and to generate, responsive to the specified spectral profile, a corresponding sequence of precoded symbols. A transmit digital filter is adapted to apply a transmit filter response, in accordance with the specified spectral profile, to the precoded symbols so as to generate a corresponding sequence of output symbols, having a given output constellation, to be transmitted in the output stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.