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1、DS扩频通信系统抗窄带干扰性能研究边##（陕西理工学院物理与电信工程学院通信班，陕西汉中723003）指导教师：陈莉[摘要]扩频通信技术是现代通信系统中的一种新兴的通信方式，其较强的抗干扰、抗衰落和抗多径性能以及频谱利用率高、多址通信等诸多优点越来越为人们所认识，并被广泛地应用于军事通信和民用通信的各个领域，从而推动了通信事业的发展。文中主要阐述了扩频通信技术的理论依据和基本概念，结合扩频通信技术的分类和原理简单介绍了直接序列扩展频谱、跳频扩频通信系统、频率跳变-直接序列混合系统。并以伪随机码序列作为扩频函数的直接序列扩展频谱通信系统的模
2、型为例，重点讨论其抗干扰能力，并在此理论基础上建立起直接序列扩频通信系统抗正弦干扰、抗窄带干扰的仿真模型。最后，简单概述了扩频通信的发展趋势，及它的两个主要应用。[关键词]扩频通信,直接序列扩频通信,抗干扰,仿真[中图分类号]TN771[文献标志码]A-50-StudyofnarrowbandinterferencesuppressioninDSspreadspectrumcommunicationsystemBian##(Grade10,Class4,MajorofCommunicationEngineering，SchoolofPhy
3、sicsandtelecommunicationEngineeringofShaanxiUniversityofTechnology,Hanzhong723003,China)Tutor:ChenLi[Abstract]Spreadspectrumcommunicationtechnologyisthemoderncommunicationsystemofanewkindofcommunicationmode,itsstronganti-interference,fightdeclineandspectrumanti-multipathp
4、erformanceandhighefficiencyandmulti-accesscommunication,andmanyotheradvantagesforpeopleplacemoreandmoreunderstanding,andiswidelyusedinmilitarycommunicationsandcivilcommunicationeachdomain,soastopromotethedevelopmentofthecauseofthecommunication.Thispapermainlyexpoundsthesp
5、readspectrumcommunicationtechnologythetheoreticalbasisandbasicconceptofcombiningthespreadspectrumcommunicationtechnologyprincipleandtheclassificationofthebriefintroductionthedirectsequencespreadspectrum,frequency-hoppingspreadspectrumcommunicationsystem,frequencyhopping-d
6、irectsequencemixingsystem.Andwithpseudo-randomcodesequenceasthedirectsequencespreadspectrumfunctionmodelofspreadspectrumcommunicationsystemasanexample,mainlydiscussedtheantiinterferenceability,andbasedonthistheoryinestablishdirectsequencespreadspectrumcommunicationsystemf
7、ightsineinterference,asimulationmodelofnarrowbandinterferenceresistance.Finally,simplesummarizesthedevelopmenttrendofspreadspectrumcommunication,anditstwomainapplication.[Keywords]spreadspectrumcommunication,DirectSequenceSpreadSpectrumCommunicationSystems,anti-interferen
8、ce,emulation[ChineseLibraryClassification]TN771[Documentcode]A不要删除行尾的分节符，此行不会被打印-50-《通信原理》课程设计目录
