Frame synchronization is the basis of demodulation by the system receiver. Only by obtaining the correct frame synchronization can the beginning moment and end moment of the frame be identified from the received data stream,the frame information correctly be recovered and the processing of data information be realized. By studying the existing DVB-S2 frame synchronization scheme,an improved frame synchronization algorithm based on BGPDI is proposed. Compared with the original method,this scheme can improve the correct detection probability of frame synchronization and reduce the false alarm rate of frame synchronization under low SNR,and complete the synchro-nization quickly and accurately.
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