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:
Apr. 16, 2013
Filed:
Aug. 06, 2009
Pansoo Kim, Daejon, KR;
Dae-ig Chang, Daejon, KR;
Ho-jin Lee, Daejon, KR;
Jin-young Kim, Seoul, KR;
Jae-sung Park, Seoul, KR;
Young-sun Lim, Seoul, KR;
Pansoo Kim, Daejon, KR;
Dae-Ig Chang, Daejon, KR;
Ho-Jin Lee, Daejon, KR;
Jin-Young Kim, Seoul, KR;
Jae-Sung Park, Seoul, KR;
Young-Sun Lim, Seoul, KR;
Abstract
Disclosed is a phase error estimating an apparatus and a method which provides improved convergence speed and tracking speed even in mobile channel environment by variably applying the step size for phase error estimation according to channel status. The apparatus for estimating a phase error includes: a posterior probability (APP) average calculating unit for calculating an APP average value from a soft decision result of a currently received symbol; a step size determining unit for determining a step size variably according to channel status; and a phase error estimating unit for estimating a phase error of the currently received symbol from a phase error of a previously received symbol and the APP average value by using the variably determined step size.