DVB-T移動接收和傳輸性能的研究與應(yīng)用.pdf

1、武漢理工大學(xué)碩士學(xué)位論文DVBT移動接收和傳輸性能的研究與應(yīng)用姓名：金菁申請學(xué)位級別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：李方敏20060401武漢理工大學(xué)碩士學(xué)位論文AbstractAnimprovedopiniononthemobilereceptionandtransmissionperformancefortheexistingDVB—TtransmissionstandardispresentedinthispaperIdesi

2、gnedtheDVB—TsystemprojectbasedonthesecondarychipandnewreceptionmodethenmadeitcometrueThispaperfirstlyintroducesthecorrelatedtheoryofDVB～TthenpresentsanimprovedopiniononthemobilereceptionandtransmissionperformanceofDVBTsy

3、stemintheory，IalsousedtheSystemAewtOsimulatethesystemthenactuallyimproveditinbomsoRwareandhardwareFinally1testedtheDVB～TreceiverofthisprojectandanalysedthetestresultsIhavemostlydonethethingsasfollowsinthewholedesignproce

4、ss：1IreadmanymaterialstounderstandthesystemstructureandcharactersofDVB—TstandardandIpresentedthekeyconditionsofimprovingthemobilereceptionandtransmissionofDVBTsystem2IusedSystemviewsoftwaretosimulateDVB～Tsystemthenanalys

5、edandsimulatedthetransmissionofDVB—Tsysteminallkindsofcomplexchannelconditionsandmobilereceptionconditions1lucubratedtheadvantagesanddisadvantagesofDVB～Tsystemandpresentedtheinfluencingfactorsformobilereception3Onthebase

6、ofexpertlycomprehendingthestructureofdigitalSTB，IpresentedfivemeasuresofimprovingperformanceintheoryanddesignedtheimprovementsfortheinsideandoutsidepartofDVBTreceiver41improvedthemobilereceptionofsysteminthehardware1used

7、thesecondarychiptodesignthehardwarestructureofthewholeprojectanddesignedtheimportantmodulesaccordingtothefunctionEspecially1usedthetuneranddesiglleditscircuit，anduseddiplexAGCcontrolannularcircuitinthefront—endofreceiver