通用差分混沌键控通信系统及其性能分析  

Analysis on System Character of General Differential Chaos Shift Keying

作　　者：赵华[1] 吴勇[2] 殷奎喜[1] 

机构地区：[1]南京师范大学物理科学与技术学院,江苏南京210046 [2]南京师范大学虚拟地理环境教育部重点实验室,江苏南京210046

出　　处：《通信技术》2009年第2期79-81,共3页Communications Technology

基　　金：国家863计划-视频GIS关键技术研究项目(2007AA12Z238);虚拟地理环境教育部重点实验室开放项目(1640703041-5)。

摘　　要：在各种混沌通信方案中,差分混沌键控混沌采用了易于实现的非相干解调,因而成为了混沌超宽带通信研究的热点。文章基于传统差分混沌键控通信提出一种通用差分混沌键控通信系统,该系统包含了多种差分混沌键控通信系统。文中理论分析了该系统中每比特采样点数、每符号比特数和信号占空比三个参数对于系统性能的影响,通过仿真证明了理论分析的正确性,最后分析了仿真和理论分析差异产生的原因。Among the modulation schemes using the chaotic signal, Differential Chaos Shift Keying （DCSK） is a robust non-coherent technique with respect to the implementation issue, and much research effort has been devoted to the study of DCSK in chaos UWB. A general DCSK based on the conventional differential chaos shift keying is proposed in the paper. It includes many different DCSK systems. The affects of the three parameters, including the number of samples in one bit, the number of bits in one symbol and duty cycle, are analyzed in theory, and simulation has also proved the correctness of theoretic analysis. Finally, the reason for difference between simulation and theoretic analysis is also analyzed in detail.

关 键 词：混沌通信 差分混沌键控 参考信号传输系统 超宽带通信 

分 类 号：TN911.3[电子电信—通信与信息系统]