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:
Jun. 22, 2010
Filed:
Jul. 27, 2007
Chih-chia Wang, Taichung, TW;
Shu-mei LI, Taipei, TW;
Chingwo MA, Danville, CA (US);
Hsin-chin Hsu, Taipei County, TW;
Yi-sheng Lin, Taipei County, TW;
Chih-Chia Wang, Taichung, TW;
Shu-Mei Li, Taipei, TW;
Chingwo Ma, Danville, CA (US);
Hsin-Chin Hsu, Taipei County, TW;
Yi-Sheng Lin, Taipei County, TW;
Alpha Imaging Technology Corp., HsinChu, TW;
Abstract
A time domain symbol timing synchronization circuit is disclosed, which comprises: an autocorrelation function calculator for calculating cyclic prefix autocorrelation functions and an offset time estimator for searching peak positions of cyclic prefix autocorrelation functions to indicate symbol boundary of received communication symbols. The offset time estimator compares a current peak position and a previous peak position. If (a) the difference of the positions is larger than a threshold and (b) the current peak is smaller than a reference average peak, the current peak is determined as false; the offset time estimator weeds out and replaces the current peak position by the previous peak position; and the current peak is not introduced in the reference average peak calculation.