基于m序列的直接序列扩频CDMA通信系统的仿真研究  

Simulation Study of DS-CDMA Communication System Based on m Sequence

作　　者：杨梅[1] 张志刚[1] 曲仁秀[1] 李满华[1] 陈阳[1] 

机构地区：[1]安徽工程大学现代教育技术中心,安徽芜湖241000

出　　处：《长江大学学报（自科版）（上旬）》2012年第5期154-156,10,共3页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

基　　金：安徽省高校省级自然科学研究项目(KJ20112030);安徽工程大学青年科研基金资助项目(2010YQ051)

摘　　要：CDMA扩频通信的关键技术之一是采用扩频序列,而扩频码序列的选择就是构造不同结构的具有良好相关性的伪随机序列来满足DS-CDMA通信系统的要求。主要研究了直接序列扩频CDMA通信系统的模型,并介绍了m序列的定义和相关性质,最后通过计算机仿真对该系统抑制正弦干扰的性能进行了分析。结果表明,在信噪比一定的情况下,误码率随正弦干扰的振幅增加而减小。The spread spectrum sequence is one of the key technologies in code division multiple access spread spectrum communication,while the choice of spreading code sequences of different structures is to construct a good correlation with the pseudorandom sequence to meet the DS-CDMA communication systems.The model of DS-CDMA communication systems is studied and the definition and related nature of the m-sequence are introduced.Finally,the performance of the system for mitigating sinusoidal interference is analyzed by computer simulation.The results show that the errorrate decreases with the increase of the amplitude at a certain SNR.

关 键 词：扩频通信 码分多址 直接序列扩频 伪随机序列 

分 类 号：TN929.5[电子电信—通信与信息系统]