通信学报 ›› 2015, Vol. 36 ›› Issue (6): 88-93.doi: 10.11959/j.issn.1000-436x.2015150

• 学术论文 • 上一篇    下一篇

无信号内干扰的高效差分混沌键控通信方案

杨华1,2,蒋国平3,段俊毅3   

  1. 1 南京邮电大学 江苏省射频与微纳电子重点实验室,江苏 南京 210023
    2 南京邮电大学 电子科学与工程学院,江苏 南京 210023
    3 南京邮电大学 自动化学院,江苏 南京 210023
  • 出版日期:2015-06-25 发布日期:2017-05-11
  • 基金资助:
    国家自然科学基金资助项目;国家自然科学基金资助项目;国家自然科学基金资助项目;江苏省研究生科研创新计划基金资助项目

High efficiency differential chaos shift keying modulation scheme without intra-signal interference

Hua YANG1,2,Guo-ping JIANG3,Jun-yi DUAN3   

  1. 1 Key Laboratory of Radio Frequency and Micro-Nano Electronics of Jiangsu Province,Nanjing University of Posts and Telecommunications,Nanjing 210023,China
    2 School of Electronic Science and Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China
    3 School of Automation,Nanjing University of Posts and Telecommunications,Nanjing 210023,China
  • Online:2015-06-25 Published:2017-05-11
  • Supported by:
    The National Natural Science Foundation of China;The National Natural Science Foundation of China;The National Natural Science Foundation of China;The Innovation Plan for Graduate Education of Jiangsu Province

摘要:

为解决高效差分混沌键控(HE-DCSK)系统判决变量中信号内干扰的不利影响问题,提出一种无信号内干扰的高效差分混沌键控通信方案。该方案通过改变混沌载波的构造方式,确保在相同信息时隙内传输的两路携带不同信息的已调混沌信号严格正交,彻底去除了接收机判决变量中的信号内干扰分量。分析和仿真表明,所提的新系统可以大大改善HE-DCSK系统的误码性能。

关键词: 差分混沌键控, 高效差分混沌键控, 信号内干扰, 非相干检测, 混沌

Abstract:

To eliminate the adverse effect brought by the intra-signal interference components in decision variables in high efficiency differential chaos shift keying system,a novel high efficiency differential chaos shift keying modulation scheme without intra-signal interference was proposed.By changing signal format of the chaotic carriers,the proposed scheme makes the two modulated chaotic signals transmitted in same time slot strictly orthogonal,which removes all possible intra-signal interference components from all decision variables clearly.It is shown by the analysis and simulation results that the proposed system has much better performance than HE-DCSK.

Key words: differential chaos shift keying (DCSK), high efficiency differential chaos shift keying (HE-DCSK), chaos