An Anti-multipath Timing Synchronization Scheme for MB-OFDM Systems

摘要

This paper presents an intact scheme of timing synchronization for Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM) Ultra Wide Band (UWB) systems. Frame detection and coarse timing are implemented with the Maximum Correlation (MC) method based on the first-band information of the preamble. Fine timing is achieved with the Minimum Energy Ratio (MER) method based on the information of all the three bands. Lag corrections are performed twice to avoid Inter-Symbol Interference (ISI). Simulations show that residual timing error can be kept at a small scale under multipath channels which can be compensated with channel in the frequency domain.