地鐵系統(tǒng)中基于OFDM技術(shù)的無線通信系統(tǒng)漫游與切換的研究.pdf

1、東南大學(xué)碩士學(xué)位論文地鐵系統(tǒng)中基于OFDM技術(shù)的無線通信系統(tǒng)漫游與切換的研究姓名：戚磊申請學(xué)位級別：碩士專業(yè)：電子與通信工程指導(dǎo)教師：衡偉李文明20070501東南大學(xué)工程碗士學(xué)位論文AbstractTheuaincontrolsystem(CBTC)basedoncommunicationisthehingeofthewholeundergroundrailwaysystemIntheundergroundrailwaysystemt

2、hecommunicationchanneliscomplicatedthemultipathfadingisdistincttheintersymbolinterference(ISI)andtheintercalderinterference(ICOOnreceivingsignalsaleserious，andthemobilestationmovesveryfastSOitisrequiredthatthewirelesscom

3、municationsystemmustbewithrapidandexacttechniquesofchannelestimationandsynchronization，andalSOwithSeCureandreliable$eamles8connectionThispaperwhichisbasedOilthespecialcaseoftheundergroundrailwaysystemdiscussesonthebasicp

4、rinciple，thebasicmodelandthekeytechnologyofOFDMandanalysestheextensiveprospectofOFDMtechnologyandthetheoreticfoundationfortheapplicationinthesystemAndchannelestimationwhichisveryimportanttothewirelesscommunicationsystemi

5、susedtOeliminatethechannelfadingaffectingonthesystem，SOthechannelestimationinOFDMsystemisanalyzed，andtheleastsquare(LS)estimation，thechannelestimationbasedonthetrainingsequenceandthechannelestimationbasedontheFouriertran

6、sformationarccomparedindetail，andthesuitablechoicefortherequirementofthesystemissuggested；thispaperalsoexplainstherealizationofthesynchronizationtechnologyinOFDMsystemAsthehiglspeedmovementofthemobilestationthecontrolsys

7、temmustsupplytheSecureandreliable$eaIIlI鵲sconnectionforthesafeoperationoftheundergroundrailwaysystemThispaperwhichgivesadeepresearchandexplanation011thetechnologyofthemobileIPintroducesthetechnologystandardofthemobileIPa

8、ndalSOdiscussesontheroutemechanismandtunnelingtechniqueillthemobilemtechnologybothofwhichsupplythehighspeedandreliableroamingandswitchingtechnologyofthesystemwiththetheoreticfoundationandsupplythefavorablemaintainability