一种无线语音混沌保密通信系统的设计与实现

摘要

In order to implement wireless transmission and decryption playback of the encrypted chaotic speech signals,based on the system hardware platform which is consisted of DSP chip TMS320VC5509A, radio frequency chip nRF24L01 and audio codec chip TLV320AIC23, the Euler algorithm is used to discretize the continuous Lorenz chaotic system for genetating chaotic digital sequences, which are used for encryption and decryption.The experiment of wireless transmission is performed on the encrypted speech signals, and the receiver can decrypt the encrypted speech signals.The witeless chaotic secure communication of speech signals is achieved.%为了实现对混沌加密语音信号的无线传输和解密回放,在由DSP芯片TMS320VC5509A、无线射频芯片nRF24L01和音频编解码芯片TLV320AIC23构成的系统硬件平台上,采用Euler算法对连续Lorenz混沌系统进行离散化处理,产生出用于加密和解密的混沌数字序列.对加密后的语音信号进行了无线传输的实验,接收端能够将收到的加密语音信号解密回放,实现了语音信号的无线混沌保密通信.