直序擴頻通信中窄帶干擾抑制算法的研究本科生

1、直序擴頻通信中窄帶干擾抑制算直序擴頻通信中窄帶干擾抑制算法研究法研究專業(yè)專業(yè)學生姓名學生姓名班級班級學號學號指導教師指導教師完成日期完成日期ResearchofNarrowbInterferenceSuppressionAlgithminDirectSequenceSpreadSpectrumCommunicationAbstract:Thespreadspectrumcommunicationmeansthatthechannelbw

2、idthftransmittingsignalismuchgreaterthanthebwidthofthesignalitself.Ithasunparalleledadvantagesfantinoiseinterferenceresistancetomultipathfadingcodedivisionmultipleaccesssignalconcealmentsecrecysooncomparewithatraditional

3、wirelesscommunicationthusitisknownasoneofthethreemainstreamcommunicationsintheinfmationagewiththefiberopticcommunicationsthesatellitecommunications.Becausethespreadspectrumcommunicationisuniquesincethedateofitsbirthitwas

4、paidattentiontobymilitary.Overthepastdecadewiththerapiddevelopmentofinfmationtechnologytheincreasingpopularityspreadspectrumcommunicationtechnologyhasbeenwidelyusedinthefieldofmilitaryciviliancommunication.quicklycomeint

5、opubliclifeaccompanyingtheGPSsatellitepositioningCDMA3Gmobilephonesotherproducts.Thebasicprinciplesofspreadspectrumcommunicationthemainacteristicswkingmethodsareintroducednarrowbinterferencesuppressionalgithmisdiscussedi

6、nthedirectsequencespreadspectrumcommunication.FourkindsofinterferencesuppressionschemesarelistedafteranalysisfinallylappedtransfminterferencesuppressionalgithmbasedonFFTissimulatedusingsimulinkofMATLAB.Insimulationspeedo

7、fdigitalinfmationis1Kbsrateofspreadingcodeis255Kbsthefrequencyofcarrieris510KHzSNRofGaussianwhitenoisecommunicationchannelis10dBfrequencyofinterferenceis510KHzratioofsignalinterferenceis2dB.Simulationresultsshowthatthein