Blind Recognition of Self-Synchronized Scrambler Based on Linear Block Code
Mi Zhang · 2015
A blind recognition method of self-synchronous scrambler based on the linear block code with unbiased information source is proposed. Different run characteristics of the linear block code and random sequence are analyzed, leading to the conclusion that the run feature of correctly extracted scrambler sequence differs from that of the wrong one.A polynomial of the scrambler is determined with maximum value search in all possible Euclidean distances between the run ratios of extracted and random sequences. Experiments and simulation results show correctness of the theoretical analysis. Blind recognition of self-synchronous scrambler after the linear block code with unbiased information source can be realized, useful in engineering application.