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ID:49946772
大小:1.53 MB
页数:99页
时间:2020-03-04
《OPNET管道阶段详解与建模.ppt》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、TransceiverPipelineandRadioModelingGoalsIntroducetheOPNETTransceiverPipelineCapabilitiesDefaultsModifypipelineShowopennessandextensibilityModelcustomwirelesseffectsOverviewWirelessmodelingoverviewTransceiverpipelinePipelinearchitectureanddefaultstagesLab:Closure-CustomPipelineStatisticBrea
2、kLab:ChannelMatch-DopplerShiftsBreakLab:Power,Inoise,ECC-SignalLockvs.PowerLockConclusionWirelessModelingOverviewWirelesscommunicationsBroadcastmediumCommunicationmorelikelytobeproblematicLessofacontrolledenvironmentthanwirelineWirelesschannelsneedtobecharacterizedappropriatelyModelreal-wo
3、rldchannelbehaviorFrequencies,power,line-of-sight,interference,etc.ChannelcharacteristicsaffecthigherlayerprotocolbehaviorSimulationtoolmustsupportwirelessmodelingNodemobilityCar,ship,aircraft,satellite,etc.Link-budget-analysiscomputationTransceiverPipelineModelspackettransmissionacrosscom
4、municationschannelImplementsphysicallayercharacteristicsDividedintomultiplestagesDeterminesifpacketcanbereceivedTxRxS1S2S3S13...Eachstagemodelsanaspectofthechannel’sbehaviorPacketPipelineStagesSequenceof‘C’or‘C++’proceduresComputesline-of-sight,signalstrength,biterrors,etc.Canindicatepacke
5、tisnotreceivableEachprocedurehasadefinedinterface(prototype)ArgumentistypicallyapacketInformationtypicallyobtainedandstoredasTransmissionDataAttributes(TDA)TransmissionDataAttributes(TDA)ScopeSpecialpacketstorageareasPartofeverypacketCarrynumericalvaluesInteger,ObjectID,floatingpoint,orpoi
6、nterInitializedbykernelatstartoftransmissionReadableduringapacket’slifeWritableonlyinpipelinePurposeCarrypipelineinformationKerneltopipelinestagePipelinestagetokernelBetweenpipelinestagesUser-DefinedPre-DefinedTDATxRxPipelineModelsScopeEachstageusesapipelinemodelStagesarereferencedviaapipe
7、linemodelobjectattributesPoint-to-Point-linkattributesBus-BusattributesRadio-transceiverattributesStagesmustbecompiledpriortoreferenceModelingmethodCreatestageincontextofthepipelinemodelCompilestageintoobjectformChangepipelinemodelobjectattributetoreferencesta
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