Impulse noise reduction to an MCM signal
US7630448B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2004 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Sep 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2647
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method reduces noise in a multiple carrier modulated (MCM) signal. Such a method may include: estimating impulse noise based in the equalized signal; and removing a portion of the noise in the equalized signal as a function of the estimated impulse noise. An apparatus reduces noise in the MCM. Such an apparatus may include: a down-converter; an analog to digital converter to digitize the output of the down-converter; a guard-interval removing unit operable upon the digitized output of the down-converter; and a combined FFT, equalization and impulse-noise-compensation unit operable upon a signal from the guard-interval-removing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.