mimo系统的抗噪声性能及资源效率的研究

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1、ABSTRACTWirelesscommunicationtechnologieschange0111"dailylifegreatly．Nowadayshigherdatatransmissionrateandmorevalue-addedapplicationswillmakethedevelopmentofnewphysicallevelcommunicationtechniquesmorechallengeabletotheresearchersandengineers．BecausetheradiospectrumreSOUlV,ewhichcanbeassignedtousei

2、slimited，theremustbesometechnologyinnovations．Multiple—InputMultiple-Output(MIMO)techniquescansatisfythenew'demands．ItcanprovidehighsystemcapacityeVentheradio联烙ourceisconstrainedtoanarrowrange·Inthispaper,researchwork,athomeandabroadonthebasisofMIMOwirelesscommunicationsystemforthetheoryinvolvedin

3、anumberofkeytechnologyandconductedindepthresearch，hasbeenmadeonprogresssuchastheanti-noiseperformanceofMIMOsystem，analyzedtheinternalrulesofinfluencefactorsofanti—noiseperformance．Basedontheanalysis，thispapermeasuredtheoverallresourceefficiencyofMIMOsystem．Themajorworkdonebythefollowing：1．Thispape

4、ranalyzedandsimulatedthesymbolerrorrate(SER)andbiterrorrate(BER)ofmodulaedsignalstransmiainginwirelessfadingchannelofdigitalcommunicationsystem．2．HasimulatedtheBERperformanceofthreesignalsdetectionsintheMIMOcommunicationsystem．Throughthesimulationofsystemperformance,WegetthattheMIMOsystemcanprovid

5、ehighsystemdiversityorder,SOthatitcanimprovethereliabilityofsignaltransmission．．Ontheotherhand,theMIMOsystemcanprovidehighsystemcapacityandhighinformationtransmissionrate,whenitimprovetheefficiencyoftransmissionsignificantly．TheperformanceofMLisbetterthanthatofSICandIDC．Thepaperalsointroducestheba

6、sicconceptsofwirelesscommunication,suchaschannelsmodels，modulationsandmultipleaccessmethods．TheAnalysisofperformanceofvariousdetectionalgorithmscanbereferencestothedesignofcommunicationreceiverandgiveusaruletotradeoffdiversityorderandsystemcapacity．3．Intheend,thispapergivesUSawaytomeasuretheoveral

7、lresourceefficiencyofdigitalmodulationsystem．KeyWords：bitrateerror,MIMO，Performancesimulation,signalsdetection,Overallresourceefficiencyofthesystem．Ⅱ第l章绪论1．1MIMO技术概述第一章绪论随着Internet和多媒体等高速数据业务在无线通信系统中的广泛应用，下一代移动通信