基于AMBE聲碼器的數(shù)字對(duì)講無線語音傳輸系統(tǒng)研究.pdf

1、西南交通大學(xué)碩士學(xué)位論文基于AMBE聲碼器的數(shù)字對(duì)講無線語音傳輸系統(tǒng)研究姓名：韋建超申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：微電子學(xué)與固體電子學(xué)指導(dǎo)教師：陳向東20090501西南交通大學(xué)碩士研究生學(xué)位論文第1I頁AbstractTwowayradioallimportantbranchofmobilecommunicationiSwidelyusedinmanyfieldsItwillbecontinueusedinthefutureforitsma

2、rketpositioniSdifferentfromotherwirelessmobilecommunicationtoolsuchasmobilephoneandCallnotreplaceeachotherAtpresent，commontwowayradiostillusesanalogcommnicationtechnologyexceptmmkedtransceiversusedigitalcontrolsignalsinC

3、hinaHoweverwiththedevelopmentofsocietyandtechnologicalprogress，frequencyresourcearebecomingmoreandmoreprecious，usersrequirehigherperformancetwowayradioTherefore，inodertoimprovetheresearchofdigitaltwowayradioinChihathesta

4、teadministrationofradiopublishedrelatedtechnicalindexesinSeptember2007Providedunreliablevoiceandeasytobeinterferedwasoneofanalogsystem’SfaultsInordertosolvethisproblem，thispaperadoptedonalowdataratesuperiorvoicequalitysp

5、eechcompressionchipsbasedonAMBEalgorithm，combinedwithTDMA／1DDtechnologymicrocontrollertechnologydesignedandimplementedadigitalwirelessvoicetransmissionsystemThispaperfirstlydiscussedthecommunicationprotocolthesystemused，

6、deft—nedthephysicallayerdesignedthetwo—slotframesolutionThendemonstratedthehardwarecircuitterminalsolutionofdigitalwirelessvoicetransmissionsystem，finishedchipselectionandcircuitdesignedofmicrocontrollermodule，voiceproce

7、ssingmodulewhichbasedonAMBE一1000vocodec，andpowersupplymoduleThendesignedsoftwaresystem，followedtopdownstrategydividedtaskintothreemodule：initializemoduledatacontrolmoduleandcommunicationmoduleThenusedassemblerlanguage，bo

8、ttomupfinishprogrammingofinitializemoduleanddatacontrolmoduleThenintroducedtheprocessofrealizationanddebuggingofhardwareandsoftwareusingiterativemodel111edigitalwirelessvoicetransmissionsystemstudiedinthispaperworkingint