mimo无线通信系统资源分配与调度-研究

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1、英文摘要‘RESEARCHONRESOURCEALLoCATIONANDSCHEDULINGINMIMoSYSTEMSABSTRACTThegoalofthenextgenerationwirelesscommunicationsystemistoprovidelOOMb／sdatarateforhighvelocityusersand1Gb／sdataratesforlowvelocityusers．However,therearemanychallengesassociatedwithsuchasystem，forexample，limitedbandwidth，variati

2、onofthewirelesschannel，batteryconstraintsofthesmallradiotransceivers．AlltheabovechallengesCanbeovercomebymultipleantennasandcross—layerdesign．Throughconfiguringthetransmitterandreceiverwithmultipleantennas，multipleinputmultipleoutput(MIMO)systemcaneffectivelyincreasethesystemcapacity．Ithasalre

3、adybeenprovedthatinarichscatteringenvironmentandunderconstraintofacertaintransmitpower,thecapacityoftheMIMOsystemislineartotheminimumnumberofthetransmitantennasandthereceiveantennas．MIMOsystemcanprovidesmultiplexgainanddiversitygain．Accordingtodifferentoptimizationobjective，differenttransmissi

4、onstrategycanbeselected．ThisdissertationismainlyfocusontheresourceallocationandschedulingofMIM0wirelesscommunication．Thedetailsofthisdissertationareasfollows．’⋯’英文摘要Firstly,thecharacteristicofthewirelesschannelfadingandMIMOchannelmodelsareinvestigated．Thenthesystemcapacityisanalyzed，whichbased

5、onthesingularvaluedecompositiontransmissionstrategy．Theoptimalpowerallocationisgiventomaximizethecapacity．Secondly，thedownlinkmulti—userMIMOtransmissionstrategiesandtheoptimalpowerallocationareinvestigatedforthegoalofmaximizingthesystemthroughput．Theeffectonthereceivedsignaltointerferenceplusn

6、oiseratioofzero-·forcingbeam--formingduetothechannelestimationerrorandfeedbackdelayisinvestigated．Thesumdatarate，multi—userdiversity,optimalusernumberandfairnessamongusersareevaluatedbysimulation．Thirdly,thecancellingofinter-cellinterferencebasedonmulti—userMIMOisconsidered．Theschedulingproble

7、mindownlinkofthecooperativemulti-cellsystemisformulated．Theobjectiveoftheschedulingistomaximizethetotalsystemthroughput．Weadoptthedecentralizedcoopermiveschemewithadaptivelinearpre—processingtransmission．Theperformanceofproposedschemein