1、西南交通大學(xué)碩士學(xué)位論文GSMR網(wǎng)絡(luò)覆蓋中的技術(shù)研究姓名：李新申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：王長(zhǎng)林20070501西南交通大學(xué)碩士研究生學(xué)位論文第lI頁(yè)AbstractTheGSMR(GSMForRailway)communicationtechnologywhichcomesfromtheEuroperailwaybasedonGSMplatform，isaspecialrailwaymobilecommunicat

2、ionsystemwhichintegrateswithtrainpublicaffaircommunicationandind／strictcommunicationAstherailwaysowncharacteristic，GSM—Rsnetworkcoveragestylealwaysadoptsamethodwhichcombinessurface—shapedcoveragewithchain—shapedcoverageT

3、hethesismainlyresearchestheproblemaboutchain—shapeddoubleredundantnetworkandradiowavecoverageAtfirst，thethesishasintroducedthedifferencebetweenGSM—RsystemandGSMsystem，thenanalysedthedouble—deckedcoverageofGSM一1Linwhichth

4、eauthormainlyresearcheshandoverunderthesameaddressmasterslavemanagementofbasestationThentheauthorworksoutanimprovedlistproducealgorithmaboutdestinationcellhandoverofGSMILSecondly，thethesishasanalysedGSM—Rradiowavepropaga

5、tioncharacteristic，andstudiedchanneldistributemodelaboutitsattenuationcoefficient，timedelayandthenumberofreflectingtimes，whichstartswithfadingphenomenonofsmalldimension，andadoptsmulti—pathchannelmodelAnditalsohasdiscusse

6、dtheimpactoflandformandspeedoverwirelesschannelparameterThethesis，basedonrandomprocesstheoryandqueuingtheorymainlyresearchestheruleofmulti—path’spathnumberdistribution，andworksoutunimprovedmethodwhichisusedtocomputethepa

7、thnumberofmultipathThesimulationshowsthatthismethodismoreapproachtotherealmeasureddatacomparedwiththeeverusedmethodwhichadoptedPoissondistributionFinallythethesisdiscussesthespeed’Seffectonfadingrateandelectricallevelpas