基于spce061实现离散混沌信息加密传输的实验研究

利用spce061高速单片机和logistic映射,对声音信号进行信息加密传输实验。发送端对模拟语音信号作A/D转换,进行多级离散混沌调制,采用并行和异步串行两种方法进行传输实验。接收端采用DeadBeat同步法快速解调,然后经D/A转换输出语音,对解调产生的噪声进行分析。实验表明,多级离散混沌系统串联加密方法简单可行。

A study based on experiments with spce061 to realize discrete chaotic secure communication

A secure communication experiment for sound was implemented with high speed Single Chip Process of spce061 and Logistic Map. In the transmitter, the analog sound signal first underwent an A/D transition, then be modulated by multilevel chaotic carrier. The modulated digital signal was transmitted to the receiver by parallel and serial communication respectively and then be demodulated by Dead Beat Method. The sound was recovered in the speaker after a D/A transition of demodulated digital signal at last. The noise generated by demodulation was also analized in this article . Results show that the scheme is effective and can be easily realized.