作　　者： ; ;

机构地区： 广东工业大学自动化学院

出　　处： 《物理学报》 2010年第5期3017-3026,共10页

摘　　要： 提出了一种基于数字信号处理器(DSP)的语音无线混沌数字通信系统设计与硬件实现的新方案.根据Runge-Kutta算法和变量比例扩张变换,以多涡卷广义Jerk系统为例,对其连续混沌系统作离散化处理,产生作为语音数据加密与解密的混沌数字序列.在芯片型号TMS320VC5509APGE的DSP技术平台上,利用无线发送器和无线接收器nRF2401,实现了语音无线混沌数字通信.给出了技术设计与硬件实现结果,证实了该方案的可行性. In this paper,a novel approach for system design and hardware realization of wireless chaotic digital speech communication via digital signal processor （ DSP） is proposed. According to Runge-Kutta algorithm and variable ratio expansion transformation,taking multi-scroll generalized Jerk as an example,the continuous chaotic system is converted to the discrete chaotic one so as to generate chaotic digital sequences,which are used for speech data encryption and decryption. Based on the DSP technical platform with TMS320VC5509APGE chip,by utilizing nRF2401 wireless transmitter and receiver,wireless chaotic digital speech communication is successfully implemented. The results of technical design and hardware realization are also given,which confirms the feasibility of the scheme.

关 键 词： 数字信号处理器 多涡卷广义 系统 语音无线混沌数字通信 硬件实现

领　　域： [电子电信] [电子电信]