基于ieee802.16e的符號同步研究

1、東南大學碩士學位論文基于IEEE802.16e的符號同步研究姓名：江源申請學位級別：碩士專業(yè)：信號與信息處理指導教師：胡愛群20070101東南大學碩士學住論文AbstractAbstractIEEE80216eiSoneofbroadbandwirelessaccessstandardswhichworkson26GHzandsupportsmobilityIEEE80216eaimstoprovidemobilehigh—speed

2、datatransmissionOFDMisoneofthekeytechnologiesinIEEE80216ebecauseofitshighperformanceinresistingmultipathdecayandhighefficiencyoffrequencyspectrumIEEE80216e’SuniquecharacteristicofhighmobilityisabigchallengeforOFDMsynchro

3、nizationtechniqueTherefore，thisthesisfocusesonthewirelessmobilechannelandsymboltiminginIEEE80216eOFDMsystemsandhardwareimplementationofsomealgorithmsonpicoChipparallelcomputingarrayplatformThefirstpartofthisthesisintrodu

4、cestheIEEE80216standardseriesandtheresearchsituationbothdomesticallyandabroadAftertheanalysisofthecharacteristicsofIEEE80216estandard，thispartintroducestheelementalprincipleofOFDM，thenegativeeffectsresultingfromsymboltim

5、ingerrorsamplingfrequencydeviationandchannelinterferenceThesecondpartofthisthesisgivesthesystematicintroduction幻wirelessmobilecommunicationchannelwhichconsistsofitsmaincharacteristicsandtheeriectscausedbymulti—fadingandD

6、opplerspreadAfterthestatisticalcharacteristicsofchanneimodelingandsimulationthispartpresentsexampleshowmultifadingandDopplerspreadeffectSthecommunicationsystemsAtthelastoftllispart，simulationoftheSUIchannelmodelsforthefi

7、xedbroadbandwirelessaccessenvironmentisalsodiscussedindetailSUIchannelmodelsarereccommandedbyIEEE80216WOrkgroupThemodelsaresetupandsimulatedTheresearchonsymboltimingin0FDMsynchronizationsystemfocusesonthealgorithmsusingP

8、NtrainingsequencesandcyclicprefixThisthesismakescomparisonbetweenSchinidl’SalgorithmandVandeBeek‘SmethodThesealgorithmshaveadvantagesinlowcomplexityandlesscomputationnis也esisalsopointsouttheirweaknessesandprovidesexample

9、sforimprovementAflertheanalysisofalgorithms，thisthesisevaluatesasynchronizationschemeusedinIEEE80216eOFDM256physicallayerandprovesthepreformanceofpresentedsynchronizaftonalgorithmsinthisschemeAnotheraspectofthisthesiscon

10、cernshardwareimplementationofthesynchronizationsystemsAdesignofsynchronizationsysteminIEEE80216—2004SubscriberStationisproposedBoththecarrierfrequencyoffsetestimationmoduleandtimingtrackingmodulearedesigned，implementedan

11、dtestifiedonthepicoChipplatformThetestresultsmetwithourexpectedperformancerequirementsThelastpartnotonlysummarizesthewholethesisbutalsoproposessomesuggestionsbasedontheproblemsoccurredandtheoptimizationofsysteminthefutur