伪随机码及计算机的产生

The Pseudonoise Sequence Code and the Birth for Computer

扩频通信系统的频谱扩展是借助于扩频函数而实现的,典型的扩频函数就是伪随机序列码,实用的伪随机码必须是具有随机性,有尖锐的自相关特性,有较小的互相关值,要有较多的序列数,同时,还要求系列平衡,易于实现等特点。m 序列和 gold 序列伪随机码满足以上条件,是应用广泛的扩频函数。文中介绍了这两个随机码的原理、性能和构造方法。并介绍了由本原多项式和递推公式用计算机产生、计算和组成序列集的方法。方法简练,适合工程技术人员参考。

Spectra expanding of spread-spectrum communication system make use of the spread-spectrum function,the typical spread-spectrum function is pseudonoise sequence code, the practical pseudonoise Sequence code must have the quality of randomness and sharp autocorrelation,it must have little cross correlation value and much set value ,it also demands of set balancing and being easy to achieve .Set m and set Gold pseudo-random code are widely applicated Spread-spectrum functions which can meet the qualification .This paper popularly introduces the theory ,property and conforming means of the two tatted code .It also introduces the method of obtaining,calculating and making up set volume by using computer from igional multinomial and recursion formula . The simple methode is convenient for engineering personnel.