Impulse noise mitigation under out-of-band interference conditions
US8488663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2010 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Feb 10, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A noise abatement method and system for impulse noise in an RF receiver where the RF analog signal is converted to a digital signal prior to being connected to a demodulator. Two filters are used to detect impulse noise signals even under out-of-band interferer conditions, and prevent the impulse noise from reaching the input to the demodulator. A first of the two filters detects impulse noise using signals lower than the frequency bandwidth of the desired signal, and a second of the two filters detects impulse noise using signals higher the frequency bandwidth of the desired signal. A mean magnitude of the signal is detected over a predetermined time T and is used to select which filter to use for noise abatement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.