扩频通信以及伪随机码仿真模型的建立

Shallow Point About Spread Spectrum Communication and Establishment of Pseudo-Random Code's Simulation Model

扩频通信是一种将信息的带宽扩展很多倍进行通信的技术,它具有较强的抗干扰、低截获性、抗衰落和抗多径性能,易于实现码分多址的特点。着重叙述了扩频通信的理论基础、分类、特点。介绍了m序列的本原多项式和它的产生方法,同时应用Simulink建立了常用扩频码序列m序列的仿真模型。

Spread spectrum communication is a kind of technology,extending many times the bandwidth of information to communicate.And it has strong anti-interference,is good for hiding,has anti-fading and multi-path fading,is easy to implement code division multiple access.This article focuses on the principle of spread spectrum communications,classification,and its features.The primitive polynomial,the generation way of m sequence are introduced.at the same time,this paper used Simulink to establish a simulation model of m sequence,which is a sequence of spreading code sequences.