无线通信原理与应用-概述课件.ppt

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1、IntroductionChapter1WirelessComesofAgeGuglielmoMarconiinventedthewirelesstelegraphin1896CommunicationbyencodingalphanumericcharactersinanalogsignalSenttelegraphicsignalsacrosstheAtlanticOceanCommunicationssatelliteslaunchedin1960sAdvancesinwirelesstechno

2、logyRadio,television,mobiletelephone,communicationsatellitesMorerecentlySatellitecommunications,wirelessnetworking,cellulartechnologyBroadbandWirelessTechnologyHigherdataratesobtainablewithbroadbandwirelesstechnologyGraphics,video,audioSharessameadvantag

3、esofallwirelessservices:convenienceandreducedcostServicecanbedeployedfasterthanfixedserviceNocostofcableplantServiceismobile,deployedalmostanywhereLimitationsandDifficultiesofWirelessTechnologiesWirelessisconvenientandlessexpensiveLimitationsandpolitical

4、andtechnicaldifficultiesinhibitwirelesstechnologiesLackofanindustry-widestandardDevicelimitationsE.g.,smallLCDonamobiletelephonecanonlydisplayingafewlinesoftextE.g.,browsersofmostmobilewirelessdevicesusewirelessmarkuplanguage(WML)insteadofHTMLPartOne:Bac

5、kgroundProvidespreviewandcontextforrestofbookCoversbasictopicsDataCommunicationsTCP/IPChapter2:TransmissionFundamentalsBasicoverviewoftransmissiontopicsDatacommunicationsconceptsIncludestechniquesofanaloganddigitaldatatransmissionChannelcapacityTransmiss

6、ionmediaMultiplexingChapter3:CommunicationNetworksComparisonofbasiccommunicationnetworktechnologiesCircuitswitchingPacketswitchingFramerelayATMChapter4:ProtocolsandtheTCP/IPProtocolSuiteProtocolarchitectureOverviewofTCP/IPOpensystemsinterconnection(OSI)r

7、eferencemodelInternetworkingPartTwo:WirelessCommunicationTechnologyUnderlyingtechnologyofwirelesstransmissionEncodingofanaloganddigitaldataforwirelesstransmissionChapter5:AntennasandPropagationPrinciplesofradioandmicrowaveAntennaperformanceWirelesstransm

8、issionmodesFadingChapter6:SignalEncodingTechniquesWirelesstransmissionAnaloganddigitaldataAnaloganddigitalsignalsChapter7:SpreadSpectrumFrequencyhoppingDirectsequencespreadspectrumCodedivisionmultipleaccess(CDMA)Chapter8:C