數(shù)字音頻廣播信號接收系統(tǒng)及其軟件架構(gòu).pdf

1、西安電子科技大學(xué)碩士學(xué)位論文數(shù)字音頻廣播信號接收系統(tǒng)及其軟件架構(gòu)姓名：馬文博申請學(xué)位級別：碩士專業(yè)：計(jì)算機(jī)軟件與理論指導(dǎo)教師：徐學(xué)洲20080101AbstractAbstractTheshortenedformofDigitalAudioBroadcastingisDAB，itisoriginatedfromEuropeforchangingtraditionalbroadcastingtechnology、improvingtheq

2、ualityofbroadcastingvoiceandprovidingtheperformanceofreceivinginhighspeedIndigitalstate，DABencodes、modulatesandtransfersthedigitalizationalbroadcastingaudioandmultiformdataimagesignalBecausedigitalsignaljusthas‘‘1’’or‘‘0

3、’’twostatesinthecourseofprocessing，thecharacteroftransferringmediumincludesnoise、nonlineardistortionandetcCan’tchangethetraitofdigitalsignalanditisconvenientforallkindsofnumericalvalueoperationandlogicaloperationBecauseo

4、ftheseuniquemeritofdigitaltechnique，itchangesthetechniquerunenvironmentoftheexistentsystemverymuch，improvestheholistictechnicalperformanceindex，andattainstunqualityandrequestthattheexistentanalogtechniqueCannotimplementB

5、aseontheexistentdigitalaudiobroadcastingtechnique，authorputforwardthesoftwarearchitecturestructureofdigitalaudiobroadcastingsignalreceivingsystemandmaterialimplementschemeThearchitecturestructurebasesonthesoftwareplatfor

6、moftimesharingoperationsystemandthehardwareplatformofdigittoanalogconversionThedigitalaudiobroadcastingsignalisreceivedbythesignalreceivingchipThespecialdecodingchipdecodesitandtransforillsittoaudiostreamandcorrelativeda

7、tathatthesystemcandealwithThemainprocessortransferstheaudiostreamtotheplayerofsystemtoplayIn也epartofrealizationofsystem，theprojectdesignshardwareabstractlayerusedtoseparatesoftwareandhardware，adoptsCprogramminglanguageto