Method for suppressing impulse noise and device thereof
US7558353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2006 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Oct 3, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2647
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for suppressing impulse noises is provided. The method is employed to receive a sample stream x[n], and to detect and suppress the interruption of impulse noise to the samples, wherein the sample stream x[n] includes a plurality of samples and n represents a discrete-time independent variable. The method includes comparing the energy sum of a (k−1)th sample and a kth sample multiplied by a first constant with a first threshold, comparing energy sum of the kth sample and a (k+1)th sample multiplied by a second constant with a second threshold while the energy sum of the (k−1)th sample and the kth sample multiplied by the first constant is greater than the first threshold, and replacing the kth sample with a first replacement sample to output while the energy sum of the kth sample and the (k+1)th sample multiplied by the second constant is greater than the second threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.