mimo无线通信系统资源分配与调度-研究

mimo无线通信系统资源分配与调度-研究

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时间:2019-02-13

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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

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