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This paper proposes a symbol timing synchronization method for Integrated Services Digital Broadcasting Terresterial (ISDB-T) system. In order to estimate symbol timing, we employ correlation based synchronization in time domain by exploiting periodical pattern, that is introduced by Cyclic Prefix of ISDB-T OFDM frame structure. This periodical pattern induces higher correlation result in the beginning of each symbol, which gives us the information about the start of symbol. To increase the performance of system in Multipath Fading environment, we propose DFT window shift method. The correlation method just produces rough estimation of the start of symbol. The estimation result still cannot avoid Inter Symbol Interference. In order to avoid interference, we proposed DFT window shift. Simulation results shows that the proposed synchronizer can improve the performance of system in multipath fading channel. The proposed design has been verified in Rayleigh channel.