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:
Nov. 23, 2010
Filed:
May. 30, 2006
Cindy Chun Wang, Newark, CA (US);
Guogang LI, Shanghai, CN;
Cindy Chun Wang, Newark, CA (US);
Guogang Li, Shanghai, CN;
Marvell World Trade Ltd., St. Michael, BB;
Abstract
A communications system includes a carrier recovery module that determines a carrier frequency offset of an input signal. A rotator module rotates the input signal to minimize the carrier frequency offset and generates a compensated signal. A correlator module correlates the compensated signal with a unique word to obtain a timing correction. An equalizer module equalizes the compensated signal based on the timing correction and generates an equalized signal. The carrier recovery module includes a burst detector module that detects a burst in response to a preamble of the input signal and an average detector to set a gain of a programmable gain amplifier (PGA). The average detector is disabled during burst search by the burst detector module and enabled at a beginning of each burst, outputs burst data to a digital signal processor when the average detector is enabled, and does not output the burst data to the digital signal processor when the average detector is disabled.