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:
Jul. 22, 2008
Filed:
Jul. 27, 2004
LI Pan, San Diego, CA (US);
Jigneshkumar Shah, San Diego, CA (US);
Fenghua Liu, San Diego, CA (US);
Nokia Corporation, Espoo, FI;
Abstract
Provided are improved systems and methods for spread spectrum communication employing hybrid Eb/No and pilot-based finger lock determination for RAKE receivers. Finger lock thresholds are periodically set using an extended time-averaged Eb/No traffic signal estimate for each finger mapped to an Ec/No pilot level, where the extended time-averaged Eb/No estimate is inversely proportional to the mapped Ec/No level, thus, decreasing the required Ec/No level when the Eb/No estimate increases and increasing the required Ec/No level when the Eb/No estimate decreases. Existing pilot-based finger lock algorithms may be used with the Ec/No threshold set using the extended time-averaged Eb/No estimate. When pilot signals are weak but traffic signals remain strong, fingers will remain locked to increase the combiner output signal-to-noise ratio.