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:
Jan. 30, 2007
Filed:
Nov. 24, 2003
Applicants:
Jingdong Lin, Irvine, CA (US);
Jiayi Zhuang, Shanghai, CN;
Yueheng Sun, San Jose, CA (US);
Fei Xie, Fremont, CA (US);
Inventors:
Jingdong Lin, Irvine, CA (US);
Jiayi Zhuang, Shanghai, CN;
Yueheng Sun, San Jose, CA (US);
Fei Xie, Fremont, CA (US);
Assignee:
Spreadtrum Communications Corporation, Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of frequency estimation for a GSM communications system is disclosed. First, the a frequency control channel data burst is received and downsampled into a plurality of subsets. Then, the subsets are filtered using an auto-regressive filter. The filtered subsets are then correlated and summed to determine a parameter r. The estimated frequency is calculated based upon the parameter r.