Systems and methods for reducing narrow bandwidth and directional interference contained in broad bandwidth signals
US9065521B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2014 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Aug 7, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J11/0066
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Under one aspect, a system includes circuitry that digitizes and Fourier transforms first and second beams and outputs first and second sets of spectral bins. Each bin may include a portion of a group of signals or interference. The circuitry compares the collective power levels of each set of spectral bins to a predetermined threshold, and excises at least one bin of that set that contains the interference if the collective power level of that set exceeds the predetermined threshold. The circuitry determines an angular location of the interference based on excised bins, combines remaining bins with weights selected to form a null in a pattern of the first and second beams that is aligned with the interference's angular location, and inversely Fourier transforms the combined remaining bins and outputs the group of signals less any interference that was excised or excluded by the null.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.