A Novel Timing Synchronization Algorithm Based on Energy Difference over Multi-path Fading Channel
Hu Yan · Jisuanji fangzhen · 2009
A novel time synchronization algorithm suited for multi-path fading channel is proposed.First,the received signals are multiplied by the conjugate to acquire the signal energy,then the correlation function is acquired by carrying out the energy differential operation with the interval of the length of OFDM data symbol part minus the length of cyclic prefix(CP),finally timing synchronization is estimated by uniting the multiple symbols sampling. Because of taking advantage of differential operation of the signal energy,the synchronous peak is clearer,and the estimation of multiple symbols strengthens the stability of synchronization.The simulation shows that the proposed algorithm can acquire a better performance of symbol timing,and remove the impact of frequency offset.