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1、IEEETRANSACTIONSONCOMMUNICATIONS,VOL.61,NO.4,APRIL20131277RelayChannelwithOrthogonalComponentsandStructuredInterferenceKnownattheSourceKaganBakano˘glu,ElzaErkip,˘Fellow,IEEE,OsvaldoSimeone,Member,IEEE,andShlomoShamai(Shitz),Fellow,IEEEAbstractArelaychannelwithorthogonalcomponents
2、inisthatinformationabouttheinterferencecanbeobtainedbywhichthedestinationisaffectedbyaninterferencesignalthatwirelessnodesinthevicinityoftheinterfererinanumberofisnon-causallyavailableonlyatthesourceisstudied.Therelevantscenarios.Asanexample,assumethattheinterfererinterferencesig
3、nalhasstructureinthatitisproducedbyanotheremploysretransmissions(HARQ)onitslink.Anodeintransmittercommunicatingwithitsowndestination.Moreover,theinterfererisnotwillingtoadjustitscommunicationstrategythevicinitymaybeabletodecodeapriorretransmissiontominimizetheinterference.Knowled
4、geoftheinterfererssignalandusethisinformationinordertofacilitateinterferencemaybeacquiredbythesource,forinstance,byexploitingmitigation.AnotherscenariowhereinterferenceinformationHARQretransmissionsontheinterfererslink.Thesourceisconventionallyassumediscognitiveradio.canthenutili
5、zetherelaynotonlyforcommunicatingitsownInthispaper,weinvestigateinterferencemitigationstrate-message,butalsoforcooperativeinterferencemitigationatthedestinationbyinformingtherelayabouttheinterferencesignal.giesforacooperativecommunicationscenarioinwhichaProposedtransmissionstrate
6、giesarebasedonpartialdecode-sourcecommunicateswithadestinationinthepresenceofand-forward(PDF)relayingandleveragetheinterferencestruc-anexternalinterferer.Arelay,whichisconnectedtotheture.Achievableschemesarederivedfordiscretememorylesssourceviaanout-of-bandlink(suchasaWi-FiorBlue
7、toothmodels,GaussianandRiceanfadingchannels.Furthermore,link)isavailable.Theinterferenceaffectsthereceptionattheoptimalstrategiesareidentifiedinsomespecialcases.Finally,numericalresultsbringinsightintotheadvantagesofutilizingdestinationbutnotattherelay.Theinterfererisnotwilling,th
8、einterferencestructureatthesource,relayo
