可编程多路白噪声发生器

Programmable multi- channel white noise generator

伪随机噪声在数字信号处理中具有重要的实用价值,白噪声是产生具有指定概率分布的伪随机噪声的基础.本文给出一种数字式可编程多路白噪声发生器的原理设计,把传统的移位寄存器技术用高速静态RAM代替,可以同时产生多路相互独立的白噪声.用DSP编程,软件简单,硬件紧凑.系统仿真表明,用本设计所产生的白噪声统计特性好、性能稳定,完全能满足声呐和通信等有关领域的要求,本文给出了原理分析、设计框图,计算机仿真的结果。

The pseudo-random data are widely applied in digital signal processing. White noise data is the basis of generating random data,which has the expected probability distribution. The design philosophy of a programmable digital multi-channel white noise generator is proposed in this paper. By using high speed static RAM and digital signal processing chip, In stead of the conventional shift register, the multi-channel independent white noise can be generated. The system simulation on a computer shows that the statistical characteristic of white noise data generated by this method is excellent and stable. It satisfies the requirements in the field of radar, sonar and communication. The analysis of design principle, block diagram and results of system simulation are illustrated.