基于定向天線的802.11n鏈路性能研究

1、華中科技大學(xué)碩士學(xué)位論文基于定向天線的802.11n鏈路性能研究姓名：盛潮云申請學(xué)位級別：碩士專業(yè)：電磁場與微波技術(shù)指導(dǎo)教師：李青俠20110122華中科技大學(xué)碩士學(xué)位論文IIAbstractAsthetechnologyofMIMOOFDMbeingintroducedintowirelesslocalaccesswk(WLAN)theperfmanceofWLANimprovessolargelyrevolutionarily.Ge

2、nerallyspeakingtheantennamodelarraymodelisusedwithomnidirectionalantennamodelunifmlineararray(ULA)inthelinksimulationofwirelesscommunicationsystem.BasedonnextgenerationWLANstard802.11nthepapermainlymaderesearchonthelinkp

3、erfmanceafteraddedthedirectionalantennamodelunifmcirculararray(UCA)modeltothe802.11nlinksystemvalidateditbymakingsimulation.Thepaperpresentedthreekindsofarraystructureofdirectionalmultibeamsmartantennasystemtheparameters

4、oftheunitantennaputfwardthreeantennapatternmodel.WithregardtoWLANchannelthepapersummarizedthechannelacteristicsoftheWLANtherelevantconceptschannelmodelusedin802.11ntherelevantmodeltoprovideatheeticalbasisofsubsequentanal

5、ysisAftertheanalysisofantennamodelchannelacteristicsmodelofWLANbasedonGeometricallyBasedSingleBounce(GBSB)modelthepapermaderesearchonthetimeofarrival(TOA)directionalofarrival(DOA)probabilitydistributionwithdifferentanten

6、namodelsshownthesimulationresults.Thenthepaperstudiedthecrelationperfmanceofomnidirectionalantennadirectionalantennamodels.Finallytheresultindicatedthatthecrelationcoefficientofdirectionalantennamodelwasalittlelarger.Mak

7、inguseofthelinksimulationplatfmof802.11nthepapersimulatedbiterrrate(BER)perfmancewiththedifferentantennamodelstypeofpolarizationtypeofantennapattern.Meanwhileanalyzedantiinterferenceperfmanceofdirectionalantenna.Thesimul

8、ationresultsshownthatBERperfmanceofUCAdirectionalantennamodelisslightlywsethanthatofULAomnidirectionalantennamodel.TheBERperfmanceofdipoleantennamodelisalittlebetterthanthatofmonopoleantennamodel.Asthegainofdirectionalan

9、tennasimprovestheBERperfmanceisgettingbetter.Theantiinterferenceperfmanceofdirectionalantennaismuchbetterthanomnidirectionalantenna.Keywds:wirelesslocalaccesswk(WLAN)directionalmultibeamsmartantennaunifmlineararrayunifmc