欢迎来到天天文库
浏览记录
ID:15260872
大小:2.78 MB
页数:11页
时间:2018-08-02
《通信原理实验 fsk modulation and demodulation 实验报告》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Name:ID:Class:Week:Lesson:Experiment:FSKModulationandDemodulationI、Purpose1.MastertheSoftwareDefinedRadioFSKmodulationanddemodulationprinciple.2.MastertheFSKgeneration,transmissionandrecoveryprocess.3.MasterFSKbasicprincipleandmethodofquadraturemodulation.4.Deep
2、entheunderstandingofphenomenaandproblemsofFSKmodulationanddemodulation.II、Apparatus1.ZH5001Acommunicationprincipleexperimentsystem2.20MHzdualtraceoscilloscopeIII、ProcedureFSKmodulation1.ObservationofbasebandFSKsignal.(1)Allinputbitsare'1'.¨BasebandFSKsignalobser
3、vation.(TPI03)Eachgridis10us,acycleof2.8grid,sothecycleis28us.(2)Allinputbitsare'0'.¨ObservationofbasebandFSKwaveformintimedomain.(TPI03)Eachgridis20us,acycleof2.8grid,sothecycleis56us.1.Theoriginatorofthein-phasebranchandthequadraturebranchsignalwaveformobserva
4、tionintimedomain.¨Observationofin-phasebranchandthequadraturebranchsignalwaveformintimedomain.(TPI03)(TPI04)Thephasedifferenceofthetwosignalsisπ/2,thereforetheysatisfyquadraturerelationship.2.Theoriginatorofthein-phasebranchandthequadraturebranchsignalLissajousc
5、urveobservation.¨ObservationoftheLissajouscurvewithin-phasebranchwaveformandthequadraturebranchsignal(TPI03)(TPI04)Twosignalswiththesameamplitudequadrature,thereforetheLissajouscurveisacircle.1.ContinuousphasebasebandFSKsignalobservation(1)Theinputbitsare'0''1'a
6、lternately.¨ObservationofinputsignalandthebasebandFSKwaveformintimedomain.(TPM02)(TPI03)Whenthebitis'1',thefrequencyofFSKsignalishigh.Whenthebitis'0',thefrequencyofFSKsignalislow.(2)Theinputbitsarespecial¨ObservationofinputsignalandthebasebandFSKwaveformintimedo
7、main.(TPM02)(TPI03)Whenthebitis'1',thefrequencyofFSKsignalishigh.Whenthebitis'0',thefrequencyofFSKsignalislow.1.TheFSKmodulatedIFsignalwaveformobservation(1)Theinputbitsare'0''1'alternately.¨ObservationofinputsignalandtheModulatedoutputsignalwaveformintimedomain
8、.(TPM02)(TPK03)Thelowertraceisasingle-sidebandsignal.(3)OpenthequadraturebranchbyKI01¨ObservationofinputsignalandtheModulatedoutputsignalwaveformintimedomain.(TPM02)(
此文档下载收益归作者所有