FREQUENCY CORRECTION APPARATUS BASED ON A DUAL VARIABLE ACCUMULATION APPARATUS AND METHOD THEREOF CAPABLE OF IMPROVING THE RELIABILITY AND ACCURACY OF FREQUENCY OFFSET ESTIMATION VALUES THROUGH A FREQUENCY OFFSET ESTIMATION RELIABILITY DISCRIMINATOR

摘要

PURPOSE: A frequency correction apparatus based on a dual variable accumulation apparatus and method thereof are provided to minimize synchronization acquisition time by selecting the dual variable accumulation apparatus including separate accumulation sections.;CONSTITUTION: Frequency correction units(303,304,308,309) correct the frequency by using estimated first frequency offset values. A frequency offset estimation reliability decision unit(370) stores the first frequency offset values. The frequency offset estimation determination unit controls a loop filter of the frequency correction unit and a first frequency offset estimation unit(305) according to comparison results.;COPYRIGHT KIPO 2012