摘要
基于对振荡电路的研究,设计实现了一种振荡采样随机源电路。该电路结构中采用了由组合逻辑电路与复杂反馈回路相结合实现的新型快速振荡器,相较于传统的环形振荡器在保留容易实现、受环境影响小等特点的同时,还有提高随机位产生速率、增强随机性等优势。为实现电路的快速仿真,利用MATLAB/Simulink建立了该随机源的模型,并且为提高仿真准确性,建模过程中考虑了CMOS中的主要噪声,引入噪声模型。最后对系统进行仿真测试,结果表明该模型的输出序列具有较好的随机性。
Based on the research of oscillator circuits, the architecture of oscillator-based random source was designed. A new type of oscillator was introduced in the architecture which takes use of combinational logic circuits with complex feedback network. It is easy to be implemented and hard to be influenced by environment as the traditional oscillator. Meanwhile, it could speed up the generation of random bit and improve the random property. To realize fast simulation, a circuit model for the new random source was established by MATLAB/Simulink. The main noise in CMOS circuit was analyzed and the noise model was introduced to improve the simulation veracity. The simulation test of the system is carried out finally, and the result indicates that the output sequence of the model has good randomness.
出处
《半导体技术》
CAS
CSCD
北大核心
2011年第4期307-311,共5页
Semiconductor Technology
关键词
随机源
振荡器
噪声
建模
快速仿真
random source
oscillator
noise
modeling
fast simulation
