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PPTcoursewareforCommunicationProfessionalEnglContents目錄IntroductiontoCommunicationProfessionalEnglishBasicknowledgeofcommunicationCommunicationprotocolsandstandardsCommunicationequipmentandtechnologyEnglishTerminologyforCommunicationApplicationofCommunicationProfessionalEnglishIntroductiontoCommunicationProfessionalEnglish01CommunicationProfessionalEnglish,abbreviatedasCPE,isaprofessionalEnglishspecificallydesignedforworkplacecommunication,aimedatimprovingpersonalEnglishcommunicationskillsintheworkplace.DefinitionCPEemphasizesthepracticalityandefficiencyoflanguage,focusingoncultivatinglearners'Englishproficiencyinspecificworkplaceenvironments,includinglanguageskillsinbusinessnegotiations,conferencehosting,presentations,andotherareas.FeaturesDefinitionandcharacteristicsImprovingprofessionalcompetitivenessMasteringCPEcanmakeindividualsmorecompetitiveintheworkplace,especiallyininternationalenterprisesorwhendealingwithforeignpartners.ExpandingInternationalPerspectiveBystudyingCPE,individualscanunderstandcommunicationmethodsandhabitsindifferentcountriesandculturalbackgrounds,therebyexpandingtheirinternationalperspective.EnhancingpersonalbrandimageFluentEnglishexpressionandprofessionalcommunicationskillscanhelpenhancepersonalbrandimageandenhancepersonalinfluence.TheImportanceofCommunicationProfessionalEnglishSimulatedworkplaceenvironmentBysimulatingarealworkplaceenvironment,learnerscanexperienceandapplyCPEfirsthand,improvinglearningeffectiveness.Byanalyzingrealworkplacecommunicationcases,learnerscanlearnpracticalcommunicationskillsandstrategies.Learnersengageinpracticalexercisesbyplayingdifferentrolesandsimulatingcommunicationscenariosintheworkplace.Encouragelearnerstoengageininteractivediscussions,sharelearningexperiencesandinsights,andprogresstogether.CasestudyRoleplayingInteractivediscussionTheLearningMethodsofCommunicationEnglishBasicknowledgeofcommunication02Thecommunicationsystemmainlyconsistsofasignalsource,atransmittingdevice,achannel,areceivingdevice,andasink,wherethetransmittingandreceivingdevicesarecollectivelyreferredtoascommunicationdevices.CommunicationsystemcompositionCommunicationsystemscanbedividedintotwocategories:analogcommunicationsystemsanddigitalcommunicationsystems.Analogcommunicationsystemstransmitinformationthroughcontinuousanalogsignals,whiledigitalcommunicationsystemstransmitinformationthroughdiscretedigitalsignals.ClassificationofcommunicationsystemsOverviewofCommunicationSystemSignalsandsignaltypesSignalsarecarriersofinformationandcanbedividedintotwocategories:deterministicsignalsandrandomsignals.Deterministicsignalscanbedescribedusingdeterministicmathematicalfunctions,whilestochasticsignalscannotbedescribedusingdeterministicmathematicalfunctions.要點一要點二SpectrumandspectrumanalysisSpectrumisthefrequencydomainrepresentationofasignal,andthroughspectrumanalysis,thefrequencycomponentsofthesignalandtheamplitudeandphaseinformationofeachfrequencycomponentcanbeunderstood.SignalandSpectrumModulationandDemodulationPrincipleModulationisatechniqueofloadinglow-frequencysignalsontohigh-frequencycarriers,whiledemodulationistheprocessofextractinglow-frequencymodulatedsignalsfromthemodulatedsignals.Modulationanddemodulationarecrucialstepsinachievingsignaltransmissionincommunicationsystems.CommonmodulationmethodsCommonmodulationmethodsincludeamplitudemodulation(AM),frequencymodulation(FM),andphasemodulation(PM),eachofwhichhasitsowncharacteristicsandissuitablefordifferentapplicationscenarios.ModulationandDemodulationChannelCapacityandShannon'sTheoryChannelcapacityisthemaximumamountofinformationthatachannelcantransmit.Shannon'stheoremprovidestherelationshipbetweenchannelcapacityandsignal-to-noiseratioundercertainconditions,providingimportantguidanceforthedesignandoptimizationofcommunicationsystems.ChannelcapacityandShannon'stheoremShannon'sformulacanbeusedtoevaluatetheperformanceofcommunicationsystems,suchasdatatransmissionrate,biterrorrate,etc.,inordertoguidetheselectionandoptimizationofcommunicationsystemparameters.TheapplicationofShannon'sformulaCommunicationprotocolsandstandards03TheTCP/IPprotocolfamilyisthecoreprotocoloftheInternet,whichincludesTransmissionControlProtocol(TCP)andNetworkProtocol(IP).TheTCP/IPprotocolfamilyiswidelyusedinvariousnetworkenvironments,includinglocalareanetworks,wideareanetworks,andtheInternet.TCPisresponsibleforreliabledatatransmission,whileIPisresponsiblefordatarouting.TCP/IPprotocolfamilyOSImodelItisdividedintosevenlevels:physicallayer,datalinklayer,networklayer,transportlayer,sessionlayer,presentationlayer,andapplicationlayer.TheOSImodel(OpenSystemsInterconnectionReferenceModel)isalayeredframeworkfordescribingcomputernetworkprotocols.TheOSImodelprovidesastandardizedframeworkforcommunicationbetweendifferentsystems.IEEE802.11standard(WiFi)IEEE802.11isthestandardforWirelessLocalAreaNetwork(WLAN),alsoknownasWiFi.Itdefinesthespecificationsforthephysicallayeranddatalinklayerofwirelessnetworks.The802.11standardsupportsmultipletransmissionrates,including2Mbps,54Mbps,and600Mbps.LTE(LongTermEvolutionTechnology)isthefourthgenerationmobilecommunicationtechnology,while5Gisthefifthgenerationmobilecommunicationtechnology.TheLTE/5Gstandardprovideshigh-speed,lowlatencydatatransmissionservices,supportingvariousdevicesandservices.Theyarethefoundationofmodernmobilecommunicationnetworks,providingsupportforemergingtechnologiessuchastheInternetofThings,cloudcomputing,andbigdata.LTE/5GstandardCommunicationequipmentandtechnology04Switch:AnetworkswitchisadevicethatforwardsandfiltersdatapacketsbetweendifferentnetworksegmentsItworksatthedatalinklayer(Layer2)oftheOSImodelSwitchescanbemanagedorunmanaged,dependingontheircapabilitiesandfeaturesManagedswitchesprovidemoreadvancedconfigurationoptions,suchasVLANsupport,porttruncation,andtrafficshapingRouter:ArouterisadevicethatforwardsdatapacketsbetweendifferentnetworksItworksatthenetworklayer(Layer3)oftheOSImodelRoutershavetheabilitytoroutedatabetweendifferentIPsubnetsandcanhandlebothIPv4andIPv6trafficRoutersareresponsibleformakingroutingdecisionsbasedondestinationIPaddressesandroutingtablesSwitchandrouterBaseStationAbasestationisastationtransmitterthatprovideswirelesscommunicationservicestomobiledeviceswithinacentralgeographicareaBasestationsareconnectedtothecorenetworkandareresponsibleforhandlingcalls,texts,anddatatrafficformobilesubscribersTheytransmitandreceivesignalsusingantsmountedontowersorotherstructuresWirelessAccessNetworkAwirelessaccessnetworkprovideswirelessconnectivitytoendusers,suchaslaptops,smartphones,andtabletsItallowsuserstoaccesstheinternetorothernetworkserviceswithoutbeingphysicallyconnectedtoawirednetworkWirelessaccessnetworkscanbedeployedusingvarioustechnologies,includingWiFi,Bluetooth,andcellularnetworksBaseStationandWirelessAccessNetworkOpticalFiberOpticalfiberisatypeoftransmissionmediumusedinopticalcommunicationsystemsItinsistsofathinglassorplasticfiberthatguideslightwavesthroughinternalreflectionOpticalfiberhasseveraladvantagesovercopperwire,includinghigherbandwidth,lowerloss,andbetterresistancetoelectromagneticinterferenceDWDMDenseWavelengthDivisionMultiplexing(DWDM)isatechnologythatallowsmultipleopticalsignalstobetransmittedonthesameopticalfiberbyusingdifferentwavelengths(colors)oflightDWDMsystemssignificantlyincreasethecapacityofopticalcommunicationnetworksbyenablingthetransmissionofmultiplesignalsatthesametimeonthesamefiberOpticalcommunicationtechnologyQuantumcommunicationtechnologyQuantumKeyDistribution(QKD):QuantumKeyDistribution(QKD)isamethodforsecurelygeneratingandsharingencryptionkeysbetweentwopartiesusingquantummechanismsprinciplesQKDsystemsusequantumstatesoflighttoestablisharandomencryptionkeythatcannotbeinterceptedwithoutdetectionThistechnologyofferisahigherlevelofsecuritycomparedtotraditionalkeyexchangemethodsQuantumTeleportation:QuantumteleportationistheprocessoftransferringquantumstatesfromoneparticletoanotherparticlelocatedfarawayusingclassicalcommunicationandangleItallowstwopartstosharequantumstateswithoutphysicallysendingtheparticlesthemselves,whichhaspotentialapplicationsinsecurequantumcommunicationanddistributedquantumcomputingEnglishTerminologyforCommunication05AglobalsystemofinterconnectedcomputernetworksthatusesthestandardInternetprotocolsuitetoservebillsofusersworldwideInternetAsetofrulesandconventionsusedbycomputersorcommunicationdevicestoexchangedataorinformationinastandardizedwayProtocolAdevicethatforwardsdatapacketsbetweennetworksusingroutingtablesandnetworkaddresstranslationRouterCommunicationnetworkterminationMicrophoneAdevicethatconvertssoundwavesintoelectricalsignals,usedforrecordingorbroadcastingsoundSpeakerAdevicethatconvertselectricalsignalsintosoundwaves,usedforreproducingsoundReceiverAdevicethatsendsandreceivessignals,typicallyusedinradioortelecommunicationssystemsTerminologyforcommunicationequipmentCommunicationprotocolsandstandardterminologyAsetofprotocolsthatdefinehowcomputersanddevicescommunicateoveranetworkTCP/IP(TransmissionContr…AstandardprotocolusedforsendingemailmessagesbetweenserversSMTP(SimpleMailTransferProtocol)AstandardprotocolusedforuploadinganddownloadingfilesfromaremoteserverFTP(FileTransferProtocol)ApplicationofCommunicationProfessionalEnglish06AcademicPaperReadingPPTcoursewarecanhelplearnersbetterunderstandtheapplicationofprofessionalEnglishinacademicpaperreading,provideexplanationsofvocabulary,grammar,andsentencepatterns,aswellas