Study on Simulation and Experiment of Chaotic PR Sequence

Abstract

This paper presents a method for generating chaotic pseudo random (PR) sequence, which uses a novel threedimensional (3-D) chaotic system and can generate both digital chaotic PN sequences and continuous time chaotic noise signals. This technique is derived from the idea of combining DSP Builder tool with Matlab/Simulink and Quartus II software and is based on the direct discreteness and quantization of the 3-D continuous chaotic system and FPGA (field programmable gate array). This technique guarantees the generation of repeatable consistent sequences based only on the initial conditions. Furthermore, the resulting continuous time chaotic noise signals do not suffer from parameter mismatches of an analog circuit. The proposed PR sequence generator is subjected to five basic statistical tests using the well-known tests suites FIPS-140–1. The proposed PR sequence generator successfully passes all five basic statistical tests. Keywords-chaos; PR sequence; simulation; experiment