ofdma系统中的动态资源分配

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1、AbstractWithcommunicationtechnology’sfastgrowing,moreandmorepeopleenjoytheconvenienceandquicknessbroughtbythewirelesscommunicationtechnology.However,duetoalotofwirelessspectrumhavebeenassignedtofixedbusiness,itleadstotheproblemthatalargenumberofauthorizedspectrumisoccupi

2、edwithlowefficiency.CognitiveRadio(CR)technologyisanewkindofintelligentwirelesscommunicationtechnology.Itcansensechangesinthesurroundingwirelesschannelsandselecttheparametersadaptively,thuscanmakefulluseoftheexistingwirelessspectrumresourcesandfurtherimprovethespectrumef

3、ficiency.Thekeytechnologyincludesspectrumsensing,spectrumsharingandmobilitymanagement.Inthispaper,wefocusonthespectrumsharingtechnologyinCR.Sincethecognitiveradioconcepthasbeenputforward,apartoftheresearchonthespectrumsharingproblemisbasedongametheory.Thespectrumsharingp

4、roblemcanbemodeledastheoptimizationproblemandthegametheorycanbeusedtostudytheoptimizationstrategiesaccordingtothepredictedandactualbehavioroftheparticipantswhowillinfluenceeachother.Soitisveryreasonabletoadoptthegametheorytostudythespectrumsharingproblemincognitiveradio.

5、Thispaperwillfocusonthecognitiveradiospectrumsharingstrategyundertheframeworkofthegametheory.Thepaperfirstelaboratessimplythebasicprincipleandkeytechnologiesofcognitiveradio,andthenillustratesthefeasibilityofthegametheorytobeusedforcognitiveradiospectrumsharingstrategy.T

6、hethinkingandprocesstogettheNashequilibriumsolutionisgiven,andthenthroughthecournotmodel,weanalyzethespectrumsharingproblembasedonthemultiplecognitiveuserprices.Thismodelgivestheutilityfunctionofcognitivenetwork,atthesametimethelearningfactorandpreferencefactorareintrodu

7、ced.Theresultsofspectrumallocationincognitivenetworkareobtainedthroughtheanalysisofthestaticgameanddynamicgame.Atlast,byBertrandgamemodel,weanalyzethespectrumsharingstrategybetweenmultipleauthorizedusersandestablishtheutilityfunctiontostudytheproblemthathowtheauthorizedn

8、etworkdevelopsthespectrumpricingstrategytoachievemaximumprofits.Throughthesimulation,twokindsofgamemake