摘要
混沌具有类似噪声的连续宽谱特性,把它应用于混沌通信已成为目前国内外研究的热点。该文主要研究一个四维Lorenz超混沌系统所产生的数字超混沌序列,对超混沌序列进行了二值量化以及平衡性、自相关性、互相关性等特性分析。结果表明Lorenz超混沌序列性能优良,是DS-CDMA通信系统的优选码型。
Chaotic signals have the properties of continuous power spectrum as the noisy signal.And it has been paid especially attention to apply the chaotic signals into chaotic communication at home and abroad recently.This paper studies a digital hyperchaotic spread spectrum sequences based on the four-dimensional hyperchaotic Lorenz system.This paper quantizes the digital hyperchaotic spread spectrum sequences into a binary one firstly.Then the balance and correlation of the new sequence are analyzed.Analytical results in this paper show that the hyperchaotic Lorenz spread spectrum sequences have good performances for the DS-CDMA system.
基金
浙江省自然科学基金资助项目(Y105175)
杭州电子科技大学科研基金资助项目(KYS051505010)
