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:
Sep. 18, 2012
Filed:
May. 01, 2006
Prasad Shamain, San Diego, CA (US);
Chi-ping Nee, Santee, CA (US);
Gadi Kalit, Nahariya, IL;
Conexant Systems, Inc., Newport Beach, CA (US);
Abstract
A satellite signal demodulator is configured to use frequency-based channel scanning to sense the presence of a channel and to obtain the frequency profile of the channel. Once the channel is identified and the profile is obtained, channel extraction is used to identify the frequency parameters for a given channel. A coarse parameter estimation is performed to obtain a coarse estimate of the symbol rate (SR) and the center frequency (f) of the channel. The coarse estimation can then be followed by a fine estimation of the symbol rate and center frequency (f), using a bit tracking loop (BTL) lock indicator.