Abstract:

A method is proposed to recognize the frame synchronization codes of the sequence intercepted by non-cooperative part. This method is to use a small area detection algorithm to estimate the frame length, then use the secondary filter to judge the start bit of frame, and finally use the fuzzy matching al- gorithm to recognize the frame synchronization code. The simulation result shows that, if the bit error rate (BER) is less than 4%, the proposed method can achieve a high recognition probability for the frame synchronization code of synchronized data frames, where the recognition probabilities for the Barker codes and m-sequences are 80% and 78%, respectively.

Key words: information processing, frame synchronization code, recognition, small area detection, fuzzy matching algorithm