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:
Mar. 20, 2012
Filed:
Sep. 09, 2005
James Chapman, Cambridge, GB;
Simon Richardson, Egham, GB;
Cyril Valadon, Letchworth, GB;
Navid Fatemi-ghomi, Frimley, GB;
James Chapman, Cambridge, GB;
Simon Richardson, Egham, GB;
Cyril Valadon, Letchworth, GB;
Navid Fatemi-Ghomi, Frimley, GB;
MStar Semiconductor, Inc., , KY;
MStar Software R&D, Ltd., Shenzhen, CN;
MStar France SAS, Issy les Moulineaux, FR;
MStar Semiconductor, Inc., , TW;
Abstract
A communications signal is received through a propagation channel, down-converted in frequency and then converted into a digital signal. The samples of the digital signal are processed to estimate the information conveyed by the communications signal. The estimated information is then used with knowledge about the propagation channel to model the samples of the digital signal. The modeled samples are compared with actual samples of the digital signal to deduce phase errors in the digital signal. The phase errors are then used to deduce a frequency error in the digital signal that can be used to correct the samples of the digital signal and to correct the down-conversion process.