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. 22, 2012
Filed:
Apr. 06, 2011
Won-joon Choi, Cupertino, CA (US);
Jeffrey M. Gilbert, Sunnyvale, CA (US);
Yi-hsiu Wang, Palo Alto, CA (US);
Xiaoru Zhang, San Jose, CA (US);
Won-Joon Choi, Cupertino, CA (US);
Jeffrey M. Gilbert, Sunnyvale, CA (US);
Yi-Hsiu Wang, Palo Alto, CA (US);
Xiaoru Zhang, San Jose, CA (US);
Qualcomm Atheros, Inc., San Jose, CA (US);
Abstract
Spurs cause significant problems with signal detecting, amplifier gain adjustment, and signal decoding. Various techniques can be used to mitigate the effects of spurs on a received signal. Generally, these techniques work by either canceling or ignoring the spurs. For example, a pilot mask can be used to ignore pilot information in one or more sub-channels. A Viterbi mask can determine the weighting given to bits in a sub-channel based on spur and data rate information. Channel interpolation can compute a pseudo channel estimate for a sub-channel known to have a spur location can be computed by interpolating the channel estimates of adjacent good sub-channels. Filtering of the received signal using a low-pass filter, a growing box filter, or a low-pass filter with self-correlation can be used to cancel a spur.