無線環(huán)境中的h.264avc差錯控制研究

1、上海大學碩士學位論文無線環(huán)境中的H.264AVC差錯控制研究姓名：李軍申請學位級別：碩士專業(yè)：通信與信息系統(tǒng)指導教師：張兆揚20050101每人學㈣I學位論史ABSTRACTDuetotherapidgrowthofwirelesscommunicationandIPnetworkthevideotransmissionbecomesthemajorapplicationinthefieldofcommunicationVideotra

2、nsmissioninwirelessenvironmentsisachallengingtaskcallingforhighcompressionefficiencyaswellasanetworkfriendlydesignH264／AVCisthemostadvancedvideocodingstandardproposedbyJVT(ITU—T&MPEG)Itgainstheexperiencesfromtheformervid

3、eocodingstandardsandhasdevelopeda10tofnewmethodsandstrategiessuchasthehighcompressedperformance，robusttransmissionandnetworkfilendlyinterfaceTheinherentnatureofvideopredictioncodingsystemmakeserrorpropagationprobablyoccu

4、rinthespatialandtemporaldomainH264／AVChasadoptedalotofadvancedpredictionmethodsandbringnewchallengesforerrorcontr01BasedontheanalysisofH‘264／AVCvideocodingandrobustnessthepapertrytofindoutaneffectivestrategYforresilience

5、inthewirelessenvironmentThemobileenvironmentiScharacterizedbyharshtransmissionconditionslntermsoffadingandmulti—userinterferencewhichresultsintime—andlocation—varyingchannelconditionsTheresearchemphasisforerrorpropagatio

6、nalgorithmiShowtoincreasetherobustnessofvideostreamingtransmissionandreducetheerror—propagationatthedecoderGroundingontheacrosstheaboardintroductionofthevideocompressionalgorithmlI264／AVC，thispaperanalyzedthepresentresea

7、rchstatejnerrorresilienceandimprovedrobustnessofvideotransmissionbasedonUEPfUnequalErrorProtection)methodBesidesweanalyzesomeerrorconcealmentmethodsinthedecoderofH。264／斟Candproposeanewmethodofer】torconcealmentbasedonthem