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Analysis of quaternary digital chaotic sequence performance based on chaotic matrix

High Technology Letters 2021年第1期27卷 103-109页

作者： Li Peize Zhao Bing Li Wenquan Laboratory of Electronic and Communication Engineering Heilongjiang UniversityHarbin 150080P.R.China

With good randomness and high sensitivity to initial values,chaotic sequences have been extensively used in secure *** chaotic sequences are highly sensitive to initial *** is an analog quantity in the domain of attraction,which is not conducive to the transmission of digital *** order to improve the stability,real chaotic sequences can be quantized into digital chaotic *** to the relationship between the information rate and the symbol rate,the symbol rate of binary sequence is the same as the information *** information rate can be doubled by quantizing a real-valued sequence into a quaternary *** chaotic sequence has weak ***,the periodicity of binary digital chaotic sequences is much weaker than that of quaternary chaotic *** with the multi-dimensional chaotic map,the one-dimensional chaotic map has small key space and low *** this paper,a new real-valued chaotic sequence is generated based on the chaotic matrix method constructed by Logistic map and Kent *** quantization methods are used to digitize the real-valued chaotic sequence to obtain the quaternary digital chaotic ***,the randomness,the time series complexity and the correlation of the new quaternary chaotic sequence are compared and *** simulation results demonstrate that the quaternary digital chaotic sequence obtained by the chaotic matrix has good randomness and correlation.

关键词： chaotic matrix digital chaotic sequence randomness

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