Abstract: A novel timing and frequency synchronization algorithm is proposed for orthogonal frequency division multiplexing (OFDM) systems requiring only one training symbol. Based on the analysis of the conventional methods, the proposed algorithm redesigns a modified training symbol which is weighted by the pseudo-noise (PN) sequence in a new manner. This algorithm can improve the synchronization performance greatly. Simulation results show that the proposed algorithm not only possesses better timing synchronization performance than the conventional method, but also ensures a higher accuracy of frequency synchronization estimation even in the multipath fading channel.

Key words: OFDM, timing synchronization, frequency synchronization, multipath fading channel