摘要
为提高信息传输的安全性,基于信息熵和混沌编码提出了一种可用于调制方式加密的通信技术。该技术可以根据对实时信道信噪比的估计自适应地选择多种高抗噪性能的调制方式,并利用经过混沌加密的调制跳变提高信号传输的保密性能。通过仿真实验,用时变信道和7种常用的调制方式,以及混沌的Logistic映射实现了该技术,并证实了其有效性。
In order to increase the information security in information transmission,A communication technique based on information entropy and chaotic coding is proposed for modulation encryption.Theoretically,this technique chooses modulation methods adaptively for the signal with low bit error rate in accordance with real- time SNR (Signal-Noise-Ratio)estimation.It also increases the information security performance of the modulated signal by switching one modulation method to another according to the chaotic cipher codes. Numerically,an experimental implementation using time-variant channel,7 modulation methods and the chaotic Logistic map,demonstrates the validity and effectiveness of this technique.
作者
马卓
MA Zhuo(Department of Data and Information,Jilin Military Area Command,Changchun 130033,China)
出处
《吉林大学学报(信息科学版)》
CAS
2018年第6期610-614,共5页
Journal of Jilin University(Information Science Edition)
关键词
信息熵
混沌编码
调制跳变技术
混沌
信噪比估计
information entropy
chaotic coding
modulation-hopping technique
chaos
signal-noise-ratio (SNR)estimation