Apparatus and method for synchronizing symbol timing synchronization applicable to OFDM receiver

摘要

An apparatus and method applied to an OFDM receiver performs symbol timing synchronization by correlation between channel impulse responses. The apparatus applicable to an orthogonal frequency division multiplexing (OFDM) receiver, includes a channel impulse response (CIR) estimator for estimating a CIR of a present symbol from which a symbol timing is to be detected, using a previous symbol received prior to the present symbol; a matched filter for computing the CIR using the present symbol; a correlation calculator for calculating correlation between the estimated CIR and the CIR computed at the matched filter; and a peak detector for detecting the symbol timing by obtaining a timing offset between the estimated CIR and the computed CIR based on a maximum value of the calculated correlation.