Interference detection, identification, extraction and reporting
US7317698B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2001 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Oct 16, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/709718
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An adaptive notch filter (ANF) module selectively filters a received wideband communication signal to eliminate narrowband interference that lies within the frequency spectrum of the wideband communication signal. To determine the presence of narrowband interference, the ANF module scans various known narrowband channels that lie within the frequency spectrum of the wideband communication signal and determines signal strengths for each of the narrowband channels. The signal strengths from the narrowband channels are compared to a threshold that is derived from the narrowband signal strengths. Narrowband channels having signal strengths that are greater than the threshold are determined to have interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.