APPARATUS AND METHOD FOR ESTIMATTING INITIAL FREQUENCY OFFSET IN UMTS SYSTEM

摘要

An apparatus and method for estimating an initial frequency offset in a mobile communication system in which a user equipment (UE) performs initial cell search in order to identify a Node B with which the UE can exchange data is provided. The apparatus comprises a memory (211) for storing a plurality of pulse duration modulation (PDM) hypotheses; a step#1 cell searcher (209) for performing a step#1 cell search on each of the PDM hypotheses through a primary synchronization channel P-SCH and outputting the cell search result to the memory; and an initial frequency offset estimator (213) for determining an initial frequency offset estimation value from the cell search results for the PDM hypotheses.