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. 10, 2012
Filed:
Jul. 24, 2008
Yingying Chen, Taipei, TW;
Ho-chi Huang, Hsinchu County, TW;
Chun-ming Kuo, Taipei County, TW;
Shih-chi Shen, Taipei County, TW;
Jengyi Tsai, Kaohsiung, TW;
YingYing Chen, Taipei, TW;
Ho-Chi Huang, Hsinchu County, TW;
Chun-Ming Kuo, Taipei County, TW;
Shih-Chi Shen, Taipei County, TW;
JengYi Tsai, Kaohsiung, TW;
Mediatek Inc., Hsin-Chu, TW;
Abstract
The invention provides a method for frequency offset estimation according to a filtered signal with destroyed phase information. In one embodiment, a filter filters an original signal according to a series of first filter coefficients to obtain a first-channel component of the filtered signal, and filters the original signal according to a series of second filter coefficients to obtain a second-channel component of the filtered signal. A series of third filter coefficients are first derived from the first filter coefficients. The original signal is then filtered according to the third filter coefficients to obtain a reference signal. A first frequency offset value is estimated according to the first-channel component of the filtered signal and the reference signal, wherein the first-channel component of the filtered signal is a first-channel component of an artificial signal, and the reference signal is a second-channel component of the artificial signal.