一种混沌伪随机序列发生器的FPGA实现  

FPGA Implementation of a Chaotic Pseudo-Random Sequence Generator

作　　者：盛利元[1] 刘念[1] 曹莉凌[2] 

机构地区：[1]中南大学物理科学与技术学院,湖南长沙410083 [2]上海水产大学工程学院,上海200090

出　　处：《郑州大学学报（工学版）》2008年第1期44-47,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(60672041)

摘　　要：随着混沌理论应用于产生伪随机序列的发展,用现场可编程逻辑门阵列实现了基于TD-ERCS混沌的伪随机序列发生器.为了便于硬件实现并减少硬件占用资源,对原算法(即基于TD-ERCS构造伪随机序列发生器的算法)进行了适当改进,密钥空间缩减到2160.设计采用双精度浮点运算,选用Cy-clone系列的EP1C20F400芯片,完成了CPRSG的系统仿真实验.系统的硬件电路占用17716个逻辑单元,占芯片资源88%,工作频率50 MHz,CPRS产生速率10 Mbps.With the development of chaos theory based pseudo - random number generator （ PRNG）, in this paper,a FPGA （Field Programmable Gate Array） based implementations of a chaotic pseudo - random se- quence generator （CPRSG） is presented. It is a bit serial implementation of a pseudo - random number generator based on TD - ERCS which is appropriately improved and the key space of CPRSG is reduced to 2^160 in order to facilitate the realization of hardware and reduce hardware resources occupied. An effort of synthesizing the improved algorithm into a Cyclone EP1 C20F400 FPGA is also reported. The design is with double - precision floating- point operations and the system hardware circuit occupies 17,716 logical elements, accounting for 88% chip resources. Elementary hardware simulation results show that the throughput of the CPRSG chip reaches up to 10 Mbps under a running condition of 50 MHz clock frequency.

关 键 词：混沌 切延迟椭圆反射腔映射混沌系统 混沌伪随机序列发生器 现场可编程门阵列 统计特性 

分 类 号：TN431.2[电子电信—微电子学与固体电子学] TN918.2