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1、5982IEEETRANSACTIONSONWIRELESSCOMMUNICATIONS,VOL.8,NO.12,DECEMBER2009NetworkInterferenceCancellationWeiChen,Member,IEEE,KhaledB.Letaief,Fellow,IEEE,andZhigangCao,SeniorMember,IEEEAbstract—Duetothebroadcastingnatureofwirelesstransmis-ofthemostcommonlyusedones.Inthecellularinfrastruc-sion,concurrent
2、lyactivelinkscancausemutualinterferencetotures,differentfrequencybandsareassignedtotheneighboreachother.Thisgreatlylimitsthethroughput,aswellas,resultscellsinordertoavoidintra-cellinterference.However,frominpoorcommunicationreliabilityespeciallyforwirelesssystemsaspectrumutilizationperspective,suc
3、horthogonalchannelwithmultiplelinksorhops.Toovercomethislimitation,manyinterferencecancellationtechniques,whichhavemainlyfocusedbasedschedulingwillreducethespectrumre-useasacostontheinterferenceamongsingle-hoplinks,havebeendesigned.tobepaidforinterferenceavoidance.Inotherwords,givenInthispaperandi
4、ncontrasttomostpreviouswork,wepresentthespectrumallocation,orthogonalchannelbasedschedulinganefficientmethod,whichwerefertoasNetworkInterferencewilldecreasethedegreeoffreedomofeachlinkalongwithCancEllationorNICE,foreffectivelymitigatingtheinterferenceitsthroughput.Asthenumberofwirelessdevicesandthe
5、frommulti-hoptransmissions.Thismethodwillmakeuseofthepriorknowledgeabouttheinterference,whichaninterferedrequirementsofdatarateskeepincreasing,wewillnotbenodecanobtainbyreceivingandprocessingthesignalsfromtheabletokeepsplittingtheentirespectrumbandsoastocreatesourcenodeofamulti-hoptransmission.Two
6、NICEprotocols,enoughorthogonalchannelsforuserswithstringentQuality-namely,decode-and-cancel,andamplify-and-cancelareproposedof-Service(QoS)requirements.Ithasalsobeenprovedin[2-3]andanalyzed.Thetwoproposedprotocolswillbeconsideredinfromaninformation-theoreticandgraph-theoreticperspectivesrelay-assi
7、stedwirelessaccessnetworksaswellaswirelessad-hocnetworkswithoutfixedinfrastructuretodemonstratethethattheaveragethroughputofeachsource-destination(S-D)potentialofNICE.ItwillbeshownthatbyusingNICE,morepaircanbevery
