A Robust Timing Synchronization Method for OFDM Systems over Multipath Fading Channels

Timing synchronization is premise and foundation of reliable receiving for OFDM signals, especially when multipath fading and Doppler shifting exists. In this work, a robust timing synchronization method based on fast timing search window and double threshold for decision is proposed. The fast timing search window can effectively reduce the false alarm probability and the double threshold decision can reduce the acquisition lost probability. Also, simulations to testify the effectiveness of the proposed strategy are carried out.