一种改进的混合差分混沌键控及性能分析  

An Improved Approach of Hybrid Differential Chaos Shift Keying with BER Performance Analysis

作　　者：马骏[1] 蒋铃鸽[1] 何晨[1] 

机构地区：[1]上海交通大学电子工程系,上海200030

出　　处：《上海交通大学学报》2004年第11期1814-1817,共4页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(60272082);国家高技术研究发展计划(863)项目(2002AA144110)

摘　　要：将基于回归映射的非相干解调的混沌键控(CSK)与现有的差分混沌键控(DCSK)相结合,提出一种改进的基于回归映射的H-DCSK通信方案.理论分析和仿真结果表明,在占用带宽相同的条件下,H-DCSK比现有DCSK提高1倍码元速率,误码率性能比非相干解调CSK有很大提高,且具有在保密通信领域应用的可能.This paper presented an improved return map based approach of hybrid differential chaos shift keying (DCSK), which combines conventional DCSK with the return map based non-coherent detection chaos shift keying (CSK). Using the same bandwidth, the new approach doubles the bit rate of DCSK. Compared to non-coherent detection CSK, the hybrid approach has a much better performance in BER. Also, with the CSK characteristic, it is more secure than DCSK.

关 键 词：差分混沌键控 混沌键控 误码率 回归映射 非相干解调 

分 类 号：TN914[电子电信—通信与信息系统]