Patent ID: 8483298
Filing Date: 2013-07-09
Classification: H04L

Abstract:
1. An apparatus for acquiring initial synchronization in a wireless communication system based on Orthogonal Frequency Division Multiplexing (OFDM), the apparatus comprising: a frame synchronizer for acquiring frame synchronization; a first offset determiner for determining a first time offset and a first frequency offset based on the frame synchronization; a preamble identifier estimator for estimating a preamble identifier in a receive signal interpolated with the first time offset and the first frequency offset; and a second offset determiner for obtaining a derandomized preamble signal and a derandomized pilot signal by generating a first preamble signal and a first pilot signal corresponding to the preamble identifier, and for determining a second time offset and a second frequency offset based on the derandomized preamble signal and the derandomized pilot signal.