The Performance Analysis And Comparison Of Chaotic PN Sequences

Chaos is a quasi stochastic phenomenon occurring in the non-linear determinate dynamic systems, which is ubiquitous in very nonlinear system. In virtue of its characteristics such as non-cycle, wide spectrum and sensitivity to the initial values. The chaotic PN sequences are highly random and have long periods which mean that it's suitable for secret communication and spreading code generation. Based on the analysis of a new continuous hyperchaotic system which is based on the use of FPGA technology and quantify the state value of chaotic system to arrive PN sequence, and analyse the randomness FIPS performance, then know the PN sequence get through the test and have practical engineering application value. Then test several mature chaotic system through FIPS performance analysis and comparison of obtained results which is better. Finally, this paper proposes with the feasibility of PN sequence generator principle. The main work of this paper includes:(1) DSP Builder Toolbag, which is developed by Altera, is employed to firstly construct chaotic systems in MATLAB. The systems are then coverted into VHDL language and downloaded into FPGA chip. This process shortens the development cycle of chaos hardware realization and makes it possible to analyze a large amount of chaotic PN sequences.(2) Constructed a new hyperchaotic Lu system, and an analysis of its symmetry, balance and stability, dissipative attractor phase diagram, Lyapunov exponent spectra and bifurcation diagram and other properties, and construct the corresponding circuit.(3) Based on FPGA Digital technology, get the chaotic PN sequences. Analyse the PN sequence of FIPS performance is quite good, provided a theoretical basis for the engineering implementation.(4) As for Lorenz, Chen, Lu, Sproott four categories of classical chaotic system, conducted a comprehensive analysis of the PN sequences obtained: for the Frequency test and Serial test, Lorenz system is the best, and for testing and Poker test-Runs test, Lu system is the best.(5) On the analysis of many chaotic systems, proposed the principle and feasibility of PN sequence generator...