1、 毕毕 业业 设设 计（计（译文译文） 论文题目：论文题目： 短扩频信号的相关性分析短扩频信号的相关性分析 院院 （系）（系） ： 通信与信息工程学院通信与信息工程学院 专专 业：业： 电子信息科学与技术电子信息科学与技术 班班 级：级： 学生姓名：学生姓名： 导师姓名：导师姓名： 职称：职称： 副教授副教授 1 A Chaotic Direct-Sequence Spread-Spectrum Communication System Abstract-The use of chaotic sequences as spectral spreading sequences in direct
2、-sequence spread-spectrum (DS/SS) communication systems is proposed. The error probabilities of such systems are investigated and shown to be, for all practical purposes, identical to the conventional DS/SS systems which use binary signature sequences. Among the advantages of the use of chaotic sequ
3、ences in DS/SS are the availability of a great number of them, the ease of their generation, as well as their inherent improvement in the security of transmission. I. INTRODUCTION In the past thirty years, there has been a great deal of interest in the study of non-linear dynamical systems . The int
4、roduction of chaos into communication systems offers several opportunities for improvement. This is partly because of the random nature of chaotic systems. Since a chaotic dynamical system is a deterministic system, its random-like behavior can be very helpful in disguising modulations as noise. Moreover, through the sensitive dependence of chaotic systems on their initial conditions, a large number of uncorrelated, random-l
