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MidtermReportfor TheBSC-MIMOInthissystem,thereareKBS=2basestations(BSs)withNBS=2transmitantennascooperativelytransmitsignalstoKUE=1user(UE)withNUE=2receiveantennas.AndthetotalnumberofcooperativetransmitantennasisNT=KBSNBS,thetotalnumberofreceiveantennasisNR=KUENUE.TwoBSsareseparatedwithdistanceofD,andUEislocatedwithdistanceofgifromi-thBS.ThechannelThesystemmodelofBSC-MIMOcanbedescribedwhereyCNRisareceivedsignalvectorofUE,sCNTisacooperativetransmitsignal1that1

sCNBS

sCNBSoftwoBSs,HCNRNTisaBSC-MIMOchannel21composedoftwoMIMOchannel21

HCNR

HCNR

betweenUE2twoBSs,2

nC

isavectorofadditivewhiteGaussianTheprecodingThesystemmodelofBSC-MIMOy=Hs+ PrecodingisoneofthesignalprocessingmethodswhichrequirechannelstateinformationsothatwecandocertaintransformationtothesignalattransmitterandthendoinversetransformationtoreceivedsignalinordertoremovetheISIandICI.Wefirstdo positiontochannelmatrixH,thenweH=

UCNR

VCNT

areleftandrightsingularmatrix,and

isthesingularmatrixofH.TherankofHisgivenbyq=i(i=1,...,q)isthei-theigenvalueofWecantakeUHasFourierTransformmatrixandsoUisInverseFouriermatrix.Therefore,precodingcanbeimplementedby ngFFTandIFFTintransmitterandreceiver.ThenwegetthereceivedsignalwhenthetransmitsignalisprecodedasWheretheprecodedtransmitsignalis:Thesignaltonoiseratio(SNR)andchannelSNRofthei-thcooperativeeigenmodeisderivedfromformula(5)

PisthetotaltransmitpowerofcooperativeBSs,andPnisthenoiseWehavetheShannon

0isdefined Sointhissystem,wewhichistheaveragechannelcapacityofthei-thcooperativeeigenmode,ignoringthebandwidthasascale.Thentotalcapacitycanbecalculatedassummationofthecapacityofcooperativeeigenmode,

CCiNow,whatweneedtoknowisthedistributionofeachTheCDFofeacheigenvalueofThroughthemethodin[1],CDFofthetwoeigenvaluecanbederivedWheregiisthedistancebetweentheUEandthei-thThen,theprobabilitydensity

fi(i)ofthei-theigenvaluecanbeobtainedthedifferentialofthe

Fi(

(2,2)*(,2BSC-PlanfortheWewillcalculatetheSNRandcapacityofthis(2,2)*(1,2)BSC-MIMOsystem whenthedistancebetweenUEandeachBSchanges.Forexample,atthecell-edge(g1=g2)andatthecell-inner(g10org20).Thenwewill yzetheresulttogetsomeconclusion.[1]ZanellaA,ChianiM,WinMZ.PerformanceofMIMOMRCincorrelatedRayleighfadingenvironmen

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