摘要摘要当今信息时代，如何有效的利用宝贵的频带资源，如何进行准确可靠的信息通信是通信领域中至关重要的问题。扩频通信正是在这种背景下迅速发展起来的快调频通信是扩频通信的一种实现方式，在抗干扰和保密性方面，它是扩频通信中很好的通信方式。在具体的实现上，跳频通信是一个用户的载波按某种跳频图案（伪随机跳频序列）在很宽的频带范围内随机的跳变。由于频率跳变的不确定性，所以很好的实现了保密通信。在本次毕业设计中，是用MATLAB实现快跳频通信系统的仿真。MATLAB是一种功能强大的软件，在统计、信号处理、人工智能以及通信领域得到了广泛的应用。在快跳频系统的设计中，主要用到SIMULINK和COMMUNICATIONBLOCKS两个工具箱。在具体实现过程中，还要结合用MATLAB语言编写的程序实现整个过程的设计。关键词：跳频通信系统、频率跳变、跳频图案、MATLABⅠABSTRACTABSTRACTThisinformationage,howtoeffectivelyusevaluablebandresources,andhowtoimplementtheaccurateandreliableinformationcommunicationisthemostimportantcommunicationfield.Spreadspectrumcommunicationwasagainstthisbackdroprapidly.QuickFMcommunicationsisspreadspectrumcommunicationinarealization,anti-jammingandprivacyaspects,itisspreadspectrumcommunicationofgoodcommunicationmode.Intheconcreteimplementation,fhcommunicationisauser'scarrieraccordingtosomefhdesign(pseudorandomfhsequence)inaverywidebandrangerandomjumptochange.Becauseoftheuncertaintyoffrequencyhopping,sogoodrealizedthesecretcommunication.Inthegraduationdesign,isMATLABfastfrequencyhoppingcommunicationsystemsimulation.MATLABIsapowerfulsoftware,instatistics,signalprocessing,artificialintelligence,andcommunicationdomainbeenwidelyused.Infastfrequencyhoppingsystemdesign,mainlyusingSIMULINKandCOMMUNICATIONBLOCKStwotoolbox.Inconcreterealizationprocess,combineMATLABlanguageprogrammingrealizethewholeprocessdesign.Keywords:frequencyhoppingcommunicationsystem,frequencyhopping,frequency-hoppingpatternandMATLABⅡ目录目录第一章引言..............................................................................................................11.1概述.....................................................................................................................11.2扩频通信的基本概念和理论基础.........................................................................21.3扩频通信的主要特点.............................................................................................41.4扩频通信的几种方式.............................................................................................6第二章MATLAB通信系统仿真组件及流程介绍.....................................................82.1MATLAB仿真环境.................................................................................................82.2MATLAB语言介绍.................................................................................................92.3SIMULINK的核心—S－函数..............................................................................102.3.1S－函数的仿真工作原理...................................................................................102.3.2S－函数的仿真流程..........................................................................................112.3.3SIMULINK的设计和开发.................................................................................12第三章跳频通信系统的性能分析............................................................................143.1跳频系统概述..........................................................................
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