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1、CommunNonlinearSciNumerSimulat16(2011)3179–3187ContentslistsavailableatScienceDirectCommunNonlinearSciNumerSimulatjournalhomepage:www.elsevier.com/locate/cnsnsResearchoncharacterizationofwirelessLANstraf?ca,?bcHuifangFeng,YantaiShu,OliverW.W.YangaCollegeofMathem
2、aticsandInformationScience,NorthwestNormalUniversity,Lanzhou730070,ChinabSchoolofComputerScienceandTechnology,TianjinUniversity,Tianjin300072,ChinacSchoolofInformationTechnologyandEngineering,UniversityofOttawa,Ottawa,CanadaK1N6N5articleinfoabstractArticlehistor
3、y:Inthispaper,weemployactualwirelessdatathatdrawfromwellknownarchivesofnet-Received21July2010worktraf?ctracesandinvestigatethecharacterizationofthewirelessLANstraf?c.Firstly,Receivedinrevisedform8October2010usefulpreliminaryinformationregardingthegeneralwireless
4、traf?cdynamicsisobtainedAccepted15October2010usingonestandardstatisticaltechniquenamedFourierpowerspectrum.Thentheestima-Availableonline23October2010tionoftheparameters,suchasthecorrelationdimension,thelargestLyapunovexponentandtheprincipalcomponentsanalysisindi
5、catetheexistenceoflow-dimensionaldeter-Keywords:ministicchaosinwirelesstraf?ctimeseries.OurresultsalsoshowthattheparametersWirelessLANstraf?cselectionofthephasespacereconstructionin?uencethevalueofthecorrelationdimen-FourierpowerspectrumCorrelationdimensionsiona
6、ndthelargestLyapunovexponent,butcannotin?uenceondiagnosisofchaoticnat-ThelargestLyapunovexponentureofwirelesstraf?c.Principalcomponentsanalysisó2010ElsevierB.V.Allrightsreserved.1.IntroductionRecentlytheIEEE802.11wirelessLANs(WLAN)[1]havebeenwidelydeployedandmor
7、eandmoremobilecomputersarebeingequippedwiththeIEEE802.11compatiblewirelessnetworkdevices.WLANisashared-mediumcommunicationnet-workthattransmitsinformationoverwirelesslinks.Itisthemostdeployedwirelessnetworksintheworldandishighlikelytoplayamajorroleinwirelesshome
8、networksandnext-generationwirelesscommunications.However,wirelessnetworksfacenewproblemswhencomparedtothewirednetworkssuchastheerror-proneradioresource,signalinterfer
