TDS-OFDM RECEIVING SYSTEM FOR PERFORMING SIGNAL PROCESSING USING PILOT SIGNALS HIDDEN IN A FREQUENCY REGION AND A SIGNAL PROCESSING METHOD THEREOF

摘要

PURPOSE: A TDS-OFDM(Time Domain Synchronous-Orthogonal Frequency Division Multiplexing) receiving system and a signal processing method thereof are provided to use pilot signals hidden in a frequency region, thereby accurately estimating frequency offset, time offset and multi-path. CONSTITUTION: A Fourier conversion part(421) converts signals of time region into signals of frequency region. A pilot detection part(431) detects pilot signals hidden in the frequency region. An offset/channel estimation part(433) estimates frequency offset, time offset and channel state based on correlation between the signals of frequency region and the pilot signals. An offset compensation part(413) compensates the estimated frequency offset and the time offset. An equalization part(435) equalizes the signals of frequency region based on the estimated channel state.