Abstract:

Multipath spread is an inherent characteristic of radio channel,time delay of channel can cause interval symbols interference（ISI）which influences the demodulation of receiver's signal seriously.This paper mainly studies the timing synchronization module in TD-LTE system under the multipath channel,optimists the algorithm of power differential based on cyclic prefix（CP） and estimates the position of timing synchronization accurately joint with primary synchronization signal（PSS）.Simulation results demonstrate that the algorithm has good performance of timing synchronization under the multipath channel and can work stable especially the time delay is largely.

Key words: multipath channel, TD-LTE, timing synchronization, power differentia