一种混合结构混沌扩频序列的设计及仿真

iming at overcoming the shortcoming that the spreading spectrums sequences generated by traditional single chaotic map has low complexity and poor performance against by intercepted, a method for generating chaotic spread-spectrum sequences based on the series hybrid mapping model was proposed. By describing the 3D graphics of their correlation function, the influence of spread-spectrum sequences on different initial combinations is qualitative discussed; an optimization selection algorithm is also presented. Those optimized sequences are applied to DS-CDMA system. The results of simulation show that the chaotic spread-spectrum sequences generated by the proposed method have good performance and more secure for communication.