A New symbol Timing Synchronization Scheme for Multi Band OFDM Ultra Wideband (MB-OFDM UWB) systems

A new low complexity correlation based symbol timing synchronization algorithm called (MSTS) is presented for MB-OFDM UWB systems. The proposed algorithm attempts to locate the start of Fast Fourier Transform (FFT) window during frame synchronization (FS) sequence of the received signal. First, a correlation based function is performed between the current received sequence and the base sequence which is known in the receiver. A maximum likelihood metric is defined to identify the peak value of this function. Verifying the gained timing offset and averaging on several symbols is the last step to locate the start of the FFT window. The proposed algorithm shows great improvement in the MSE, synchronization probability and bit error rate metrics compared with those of earlier works.