基于参考调制的码移差分混沌移位键控通信方案
A Code Shifted Differential Chaos Shift Keying Communication Scheme Based on Reference Modulation
李守毅 1杨华 1王宇 1蒋国平2
作者信息
- 1. 南京邮电大学电子与光学工程学院、柔性电子(未来技术)学院,南京 210023
- 2. 南京邮电大学自动化学院、人工智能学院,南京 210023
- 折叠
摘要
为利用码移差分混沌移位键控系统中的参考信号传输额外的信息比特,提出一种低复杂度的基于参考调制的码移差分混沌移位键控通信方案.所提方案对参考信号和信息信号分别进行独立的码索引调制,大幅提高了比特传输速率.接收机采用先分段平均处理,再进行相关检测的方法,同时降低接收到的参考信号和信息信号中的噪声.在加性高斯白噪声和多径瑞利衰落信道中完成系统误码性能的理论分析和仿真验证.实验结果表明,所提方案能降低系统复杂度、大幅提高比特传输速率以及获得更好的误码率性能.
Abstract
A low-complexity code-shifted differential chaos shift keying communication scheme is proposed,based on reference modulationwhere additional information bits are delivered by reference signals.In this system,the reference and information signals are modulated by independent code index modulations,which helps to greatly improve the bit rate.At the receiver side,a detection method is used to reduce noises in both the reference and information signals,in which received signals are averaged based on segments before correlation.Bit error rate of the proposed system is analyzed theoretically and verified by simulation results in the additive Gaussian white noise and multipath Rayleigh fading channels.Results evidently demonstrate that the proposed scheme can reduce system complexity,obtainhigher bit transmission rate and better bit error rate performance.
关键词
码移差分混沌移位键控/码索引调制/参考调制/系统复杂度/比特误码率Key words
code shifted differential chaos shift keying/code index modulation/reference modulated/system complexity/bit error rate引用本文复制引用
出版年
2024
NETL
NSTL
万方数据