基于頻域方法研究超寬帶傳播特性.pdf

1、科門婁：—王—!L分類號：—旦塑塑一單位代碼—且堡!!一密級：——專j童榔唐Z廖碩士學位論文滄文題目：基于頻域方法研究超寬帶傳播特性學生姓名學號指導教師學科專業(yè)研究方向論文提交日期袁珍碩050216張業(yè)榮教授電磁場與微波技術無線通信與電磁兼容oo八年四月AbstractItisveryimportanttesearchthepropagationcharacteristicsofUWBsignalandsetupingchannelmo

2、delofUWBsignalfordesignandapplicationsofUWBcommunicationsystemInthisthesis，UWBimpulseismainlyresearched，andaperfectchannelmodelinindoorenvironmentissetupbyusingthecombinationofraytracingmethodinfrequencydomain，andtheprop

3、agationprocessofUWBsignalinindoorenvironmentissimulatedAfteranalyzingseveralcases，theprogramisapprovedtobetrueThetimedomainsignalandpathlossisobtainedatterpropagationinseveralenvironments，andthepropagationcharacteristics

4、ofUWBsignalareconcludedInthisthesis，themaincontributionsareasfollows：(1)ThetraditionalSBR／Imagemethodsaredeeplyresearched，anditsbasictheoryandre—alizationsareinvestigatedindetail，andsomeconcreterealizationstepsaredescrib

5、ed(2)A仔equencydomainmethodisputforwardonthebasisofSBR／ImagemethodTherealizationStepsandadvantage／disadvantageofthismethodareparticularlyilluminated，andsomeimprovementsareproposed(3)Theimprovedraytracingbanddividedmethodi

6、ssimulatedbyMatlab，andthetime—domainsignalandpropagationpathlossareobtainedTheresultsshowthatthemethodiscorrectanditsperformanceispriortotheformermethodpresentedinthegivenreference(4)ThepropagationofUWBsignalinspecificen

7、vironmentistracedandsimulated，andthetimedomainsignalandpathlossareobtainedThenthepropagationcharacteristicofUWBsignalsuchassignaldistortionandpasslossareconcluded(5)Planonthefuturework，andmakeadvisestoitKeywords：UWB，RayT