Narrowband noise canceller
US6683913B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1999 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | Dec 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/123
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A high-speed receiver, adapted to receive signals over an input line in the presence of narrowband radio frequency interference (RFI). The receiver includes a RFI canceller module, which is coupled to receive samples of the interference from the input line. The module includes an adaptive bandpass filter, which is adapted to track a dominant frequency of the interference, and to generate a filtered output in a narrow frequency range centered on the dominant frequency. A corrector is coupled to receive the filtered output from the adaptive bandpass filter and to generate, responsive thereto, an estimate of the interference in the signals received by the receiver. A subtractor is adapted to subtract the estimate of the interference from the signals received by the receiver so as to generate a corrected output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.