移动卫星通信的信道模型和传输特性分析

20037JuI.2003267JOurnaIOfChOnggingUniversityVOI.26NO.71000-582X200307-0037-05400044PSKPSKTN921.23AGEOGeO-statiOnaryEarthOrbitMEOLEOMediumEarthOrbitLOwEarthOrbit1-2LEOGEO1/20~1/80GEOGEO1/200~1/2000GEO1/753-4C.LOO5LOSLineOfSightLOSRayIeighG.E.COrazzaF.VaraIarO6LOSr=RSRSLOSLOSLOSLOS3LOS1rt=zt+dt+nt1ztdtnt57-8prr=rJ02!d!001zexp-Inz-!22d0-r2+z22J()00rzJ()0dz2rJ0!d02003-03-012000-61871978-lnzi0=z22z=120ln100J09J0=0+13aJ0=J00+J01+J022+J0333b=0+1+22+333cp=12!!exp--m222()4m21J00=4.5J00=-0.195724894364780=-2.623811143740201=-0.05J01=0.020099565886981=0.11544285956009J02=-0.000417271040212=-0.00184772039564J03=0.000002512692163=0.0000-09640281252BPSKBPSK10pe=0PeIrprrcr5PeIrrPeIr=12erfcr2!()N6erfcx=2!!xe-U2cUN265Pe=12!i!0001zexp-lnz-U22i0-r2+z22J()0rJ0erfcr2!()N0rzJ()0czcr7BPSK11-12Pe=-PeeIpc8PeeIPeeI=erfcr2!Ncos()=12-12erfr2!Ncos()998PeB12-1!ZI=0-1I2I+1exp-2I+122m()210r2/2N103DSSSDirectSpreac-SpreacSpectrumchip13-16317PT=cJ0exp-cT11T1/c0.65sTcchipTS=1cJm0m-1TcmTcmJm0=mTcm-1TcPTcT=J01-exp-TcT()[]Sexp-m-1TcT[]S122J0Jm0DS/BPSKNGolcKMII=12KiIIcIIArI=ZKI=1ZMm=1AamIiII-TmIcII-TmIcosO0I+GmI+II13amITmIGmIIIN02PN832003ijVij=AaijTddi+ZKk=1Ik+!i14TdIk!iN0Td1819MK2i2i=2KA2T2d3N60+exp2#+2d0/2152=2i+N0Td16DSPe=120erfcr2!()2prdsrdr17prdsrprdsr=r6102!d!001zexp-r2+z22610-Inz-#22d[]0I0rz6()10dz18610=Tc0P$d$=601-exp-TcT()[]Sm=147102BPSK122600.1580.0631#1.1220.0199d01.2595.01m0.360.5211.0X10-3BPSK12dB17dB1223BPSK3K=1GOLDN4096chip932674Ts/Tc=6.53LOSLOSLOSLOS440chipTs/Tc=6.54KlKK2N=l024K=200N=4096K=800445K=400N=4096TschiplTclchip5Ts/Tclchip220-2l5BPSKl.M.l999.2.M.l993.3THEODORESRAPPAPORT.WireiessCommunicationaPrincipiesandPracticeM.l999.4JOHNGPROAKIS.DigitaiCommunicationsM.200l.5LOOC.AStatisticaimodeiforaiandmobiiesateiiiteiinkJ.IEEETrans.onVTl985VT-343l22-l27.6LOOC.MeasurementsandmodeisofaiandmobiiesateiiiteandtheirappiicationtoMSKsignaisJ.IEEETransactionsonVehicuiarTechnoiogyl987VT-363ll4-l2l.7.M.2002.8.M.0420031986.9.J.19961723-30.10GIOVANNIECFRANCESCOV.Astatisticaimodeiforiandmobiiesateiiitechanneisanditsappiicationtonon-geostationaryorbitsystemJ.IEEETrans.OnCommuni-cation1994433738-742.11.M.1999.12CHOOLOO.DigitaitransmissionthroughaiandmobiiesateiiitechanneiJ.IEEETransonCommunication1994413386-389.13PURSLEYMB.PerformanceEvaiuationforPhase-CodedSpread-SpectrumMuitipie-AccessCommunication-Part1SystemAnaiysisJ.IEEETransonCommunication1977COM-258772-779.14JK.M.1991.15.M.1995.16.M.1997.17MARVINKSIMONEJIMK.OmuraRobertaA.SchoitzBarryK.Levitt.SpreadSpectrumCommunicationsHand-bookM.2002.18RICHARD.JVANNEERAMIEEPRASAD.Spread-SpectrumPathDiversityinaShadowedRicianFadingLand-MobiieSateiiiteChanneiJ.IEEETransactiononVe-hicieTechnoiogy1993422131-136.19RICHARDJVANHOWARDSM.Direct-seguencespreadspectruminashadowedRicianfadingiandmobiiesateiiitechanneiJ.IEEEJonseiectedAreasInCommu-nications1992102350-357.20.DSPM.2002.21JOHNBGREOLawrenceE.Larson.CDMAMobiieRadioDesignM.2002.AStatisticalModelforMobileSatelliteChannelandDigitalTransmissionAnalysisOIUJingYUPingYANGShi-zhongCoiiegeofCommunicationsEngineeringChonggingUniversityChongging400044ChinaAbstractThepaperdeaiswiththestatisticaicharacterizationofmobiiesateiiitechanneiandintroducesastatisticaichanneimodei-theShadowingRicianFadingmodeiforfreguencynonseiectiveiandmobiiesateiiitechannei.Thepa-rameterscontainedinthemodeiaregivenbymeansoftriaianderror.BasedonthemodeitheBERBitErrorRatioperformanceisanaiyzedfornarrow-bandmoduiationandwide-bandspread-spectrummoduiationofcoherentPSKPhaseShiftKeyingsignais.Theresuitsshowthatthemuitipathandfadingphenomenoninthechanneisworsensthesystembiterrorperformancewhiietheuseofwidebandspreadspectrummoduiationcanimproveitefficientiy.Inaddi-tionananaiyticaiexpressionisderivedfortheirreducibieprobabiiityofbiterrorofcoherentPSKsignaisduetophasevariationscausedbyfadingandshadowing.Atiastthenumericairesuitsareobtainedanddiscussed.Keywordsmobiiesateiiitechanneifadingchanneimodeispread-spectrum14267移动卫星通信的信道模型和传输特性分析作者：邱晶，余平，杨士中作者单位：重庆大学,通信工程学院,重庆,400044刊名：重庆大学学报(自然科学版)英文刊名：JOURNALOFCHONGQINGUNIVERSITY(NATURALSCIENCEEDITION)年，卷(期)：2003,26(7)被引用次数：4次参考文献(21条)1.吕海寰;蔡剑铭;陈九治卫星通信系统19992.陈芳允卫星测控手册19933.TheodoreS;RAPPAPORTWirelessCommunicationPrinciple&Practice19994.JohnG;PROAKISDigitalCommunications20015.LooCAStatisticalmodelforalandmobilesatellitelink1985(03)6.LooCMeasurementsandmodelsofalandmobilesatelliteandtheirapplicationtoMSKsignals1987(03)7.段凤增信号检测理论20028.陆大随机过程及其应用19869.李英涛卫星移动通信信道模型和误码率特性分析1996(17)10.GIOVANNIEC;FRANCESCOVAstatisticalmodelforlandmobilesatellitechannelsanditsapplicationtonongeostationaryorbitsystem[外文期刊]1994(03)11.曹志刚;钱亚生现代通信原理199912.CHOOLOODigitaltransmissionthroughalandmobilesatellitechannel1994(03)13.PursleyMBPerformanceEvaluationforPhase-CodedSpread-SpectrumMultiple-AccessCommunication-Part1:SystemAnalysis1977(08)14.霍姆斯JK相干扩展频谱系统199115.沈允春扩谱技术199516.查光明;熊贤祚扩频通信199717.MARVINK;SIMONE;JIMKOmuraSpreadSpectrumCommunicationsHandbook200218.RICHARD;JVANNEE;RAMIEEPRASADSpread-SpectrumPathDiversityinaShadowedRicianFadingLand-MobileSatelliteChannel[外文期刊]1993(02)19.RICHARDJ