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.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
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)
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
differential chaos shift keying(DCSK)
chaos shift keying(CSK)
bit error rate(BER)
return map
non-coherent detection
