System and method for spur estimation and mitigation
US8451918B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2008 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Jun 28, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04K3/228
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A spur detection and spur cancellation apparatus in a multiple sub-carrier digital communication receiver includes a spur detection block that estimates, using one or more Fourier transforms, a frequency location of a narrowband interference spur in a received digital signal that includes a plurality of sub-carriers, and a spur cancellation block that attenuates the estimated narrowband interference spur. The spur detection block may use a fast Fourier transform (FFT) and/or a discrete Fourier transform (DFT) to locate a frequency and to measure a discrete power spectra of the narrowband interference spur. A channel state information block in the receiver may adjust a channel state information metric based on the located frequency and/or the measured discrete power spectra of the narrowband interference spur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.