gsm管控系统dsp方案设计与实现

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1、重庆邮电大学硕士论文AbstractWiththedevelopmentoftechnology,themobilecommunicationsystemsenterintoahighspeeddevelopmentperiod．Oneofthesystems，GSM(GlobalSystemforMobileCommunications)，hasalreadybeenspreadacrosstheworld．Inourcountry,GSMsystemcoversmostoftheregion，andth

2、enumberofGSMmobilephoneusersisthemost．However,whenthepopularityofphoneprovidespeopleallkindsofbenefits，atthesametime，itbringssomesafetyhiddentroublewhichaddssomedifficultiestoinformationsecurityworkinsomespecialoccasions．Therefore，insomeplacesjustlikeconfi

3、dentialmeetingroom，themobilephonecontrolsystememergesasthetimesrequireSOthatthesignalsourcecarlbemonitoredandcontrolled．Untilnow,mostofthemobilephonesignalmanagementequipmentsobstructphonesignalbysendingstronginterferencesignalsandblockingthecommunicationl

4、inkbetweenphoneandbasestation．Buttherehasthelatestmobilephonecontroltechnologycalledpseudobasestationtechnology．Byapplyingthistechnologytoachievethepurposeofmonitoring，thecontrolequipmentpretendstobeabasestationandtheninducephonetoformcommunicationlinkwith

5、itnotrealbasestationbysignalspoofing．Inthispaper,onthebasisofthesetechnologies，accordingtotherequirement，designedaGSMmobilephonescontrolsystembasedonDSPbasebandsignalprocessing．ThesystemcanrealizetwofunctionsthatinterferesGSMmobilephoneuserinthescopewhicht

6、hesystemCanworkwellandmaintainscommunicationsofsomespecificusersmeanwhileinterferescommunicationsofsurplususers．Moreover,thetwofunctionscallswitchoverflexiblyaccordingtorequirement．Thepaperfirstintroducestheframeofmobilephonecontrolsystem，analyzesthefeasib

7、ilityofsystemscheme，andputsforwardthefunctionandperformancerequirementsofthesystem．ThendesignDSPbasebandsignalprocessingboardwhichcontainsthreeparallelsignalprocessingchannelsaccordingtotherequirement．Afterthat．thepaperdescribesthehardwarearchitectureofthe

8、signalprocessingboard．ThreeDSPprocessorsarethecoreoftheGSMbasebandsignalprocessingboard．Andtheprocessorsarerespectivelyusedtoprocessuplinksignalanddownsidesignalandstructurethedisturbancesignal．Therefore，achi