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ID:39402476
大小:244.50 KB
页数:69页
时间:2019-07-02
《基于博弈论的认知无线电频谱共享算法研究》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、北京交通大学硕士学位论文基于博弈论的认知无线电频谱共享算法研究姓名:秦文丽申请学位级别:硕士专业:通信与信息系统指导教师:谈振辉20080601ABSTRACTABSTRACTABSTRACT:Thedependenceonradiospectrumresourcehasbeengrowingwiththewideuseofthewirelesscommunicationtechnologyineverydaylife.Meanwhile,theproblemofspectrumshortagebecomesmoreandmoreser
2、ious.However,researchesshowthattheexistingfixedspectrumassignmentpolicycausesthelowaverageefficiencyofspectrumutilizationaswellashi.ghimbalance.Tosolvethisproblem,theonlywayistoreusethespectrumandimprovetheutilityofspectrumresource.Cognitiveradioisborninthisbackground,wh
3、ichbringsapromisingfuturetosolvethespectrumshortage,realizedynamicspectrummanagementandimprovetheefficiencyofspectrumutilization.Incognitiveradio,spectrumsharingisalwaysthehotspotintheworldwideresearch.Sinceitsconceptwaspioneered,manyanalysismodelshavebeenproposed,whicha
4、remainlybasedontheclassicmathematictheoryandmicroeconomictheory,etc.Recently,theresearchmethodbasedongametheoryemerges.Buttheresearchisnotmuchandtheexistingalgorithmislimited.Thereforetodevelopthenewspectrumsharingmodelsandtheapplicationofgamealgorithmsisextremelymeaning
5、fulbothintheoreticalandrealisticaspects.Inthisdissertation,firstly,thetheoreticalframeworkofspectrumsharingsystemincognitiveradionetworkisestablishedandthegamemodelforthespectrumsharingincognitiveradionetworkisproposedbasedontheanalysisoftheexistingspectrumsharingmodels.
6、Secondly,withtheapplicationofthismodel,theconceptofspectrumdiversityisintroducedandthreegametheoreticalalgorithmsaredesigned,whicharestaticBertrandgamealgorithm,dynamicStackelbergalgorithmandrepeatedgamealgorithm.Allofthesealgorithmsaredesignedtomaximumtheprofitoftheprim
7、arysystemwiththefinalgoalofimprovingitsefficiencyofspectrumutilization.Finally,theequilibriumoutcomeisachievedbyusingnumericalanalysismethod.Thespecificinfluencesofhorizontaldiversityandverticaldiversityonthepositivityofprimarysystem’Sspectrumsharingandtheefficiencyofspe
8、ctrumutilizationarepresentedrespectively.Theadvantagesanddisadvantagesofthethreealgorithmsarealsocompar
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