Synchronization is very important to OFDM systems.In view of timing obscurity of the S&C and Park algorithms

we propose an improved symbol synchronization algorithm.The new method first identifies the probable initial position of the OFDM symbol by correlating the received signals with the known training sequence

and then further identifies its accurate initial position by filtering the correlation operation result.Simulation results show that the timing metric of the improved algorithm has an impulse-shaped peak in the conditions of low SNR and multi-path fading channel and smaller Mean Square Error（MSE） in timing than the conventional methods.