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In order to analyze sequences, the minimum periodicity of sequences may be calculated. According to the relation of the sequence with its autocorrelation, an algorithm was brought forward. The periodicity of autocorrelation is equal to the periodicity of the digital sequence. The minimum periodicity of autocorrelation sequence is the position difference between the top apex with the second apex of...
In order to get long period pseudo-random sequence, the new composite idea to prolong periods of sequences is brought out. The composite idea prolongs period of sequences with a few short period sequences through compound operation. The new idea was proven, and applications were introduced in the paper. The result shows that the longer period may be gotten by compound idea. The conclusions are that...
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