摘要
常规模拟方法产生的噪声功率谱不平坦且很难控制。为产生高随机、高速度数字噪声,利用多位M序列的长周期伪随机性,截取高位M序列的部分位求和来产生新的M序列,证明其具有高位M序列的性质,并将其用于数字噪声源的设计应用。运用qurtusⅡ软件进行硬件编程仿真,并用matlab对仿真结果进行功率谱分析,证明新方法产生的随机噪声具有高随机、高速度的良好性能,且方法简单实用,具有一定应用价值。
The conventionally generated noise power spectrum is un -fiat and difficult to control. In order to generate high random and high speed digital noise, by using the psendo randomicity of long cycle of large bits M - sequence, the new M - sequence can be achieved through intercepting high bits of M - sequence and summating them. It is proved to hold the characteristic of high bit M - sequence and can be used in design of digital noise generator. The random noise generated by this new method has high randomicity and high speed capability through simulation in quartus Ⅱ and analysis of its power spectrum with matlab. This method is easy and has broad application prospect.
出处
《电讯技术》
2008年第3期79-81,共3页
Telecommunication Engineering
