The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 2013
Filed:
Nov. 17, 2008
Hao-ren Cheng, Yuanli Township, TW;
Gaspar Lee, Bade City, TW;
William J. Mcfarland, Los Altos, CA (US);
Paul J. Husted, San Jose, CA (US);
Justin Huang, Hsinchu, TW;
Hao-Ren Cheng, Yuanli Township, TW;
Gaspar Lee, Bade City, TW;
William J. McFarland, Los Altos, CA (US);
Paul J. Husted, San Jose, CA (US);
Justin Huang, Hsinchu, TW;
QUALCOMM Incorporated, San Diego, CA (US);
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.