寬帶無線通信系統(tǒng)中空時頻碼的研究.pdf

1、代號10701分類號一一刪!!!絲一學(xué)號必!；璺磐蟹密級一堡一而簧它爭辯輟允警碩士學(xué)位論文題c中、英文，目童鱟無線遁鑷箕蟲室墮叛瑪煦矽院盥受隴粵毋堂№q賊；衛(wèi)￡9地鮑雖19烈ban_d_Wir_e_lejs一一￡9m瓔Mj；婁i旦墅j鯉嬰j作者姓名壺焦。指導(dǎo)教師姓名、職務(wù)一駕玉盛副熬援二一王羝梅熬援學(xué)科門類工堂學(xué)科、專業(yè)垣螢復(fù)氳墾暴巍提交論文日期一三旦Q圭年：旦AbstractTheM1MO(Mumt如le—InputMultipleO

2、utput)systemcanequivalentthefadingcoefficientsbetweentransmitreceiveantennapairstoseveralparallelindependentsubchannels，whichCallbeutilizedtotransmitdamaswellastOincreasespectralutilizationratioSpacetimecodedesignedformu

3、ltipleantennassystemsisaneffectivewaytoapproachtheMIMOchannelcapacityEspeciallytheperformanceofcodingsystemcanbefurtherimprovedbyusingspacetimefrequencycodesthroughutilizingthefrequencydiversityfromthemultipathfadingchan

4、nelsHavingbeenwidelyappliedduetothefeatureofeffectivelyovercomingthemultipathfrequencyselectivefadiIl舀theOFDM(OrthogonslFrequencyDivisionMultiplexing)techniqueWasintegratedwiththespacetimefrequencycodetoformaMIMO—OFDMsys

5、tem，whichhasbeenoneofthemostimportantresearchesduetoitshighcapacityandhighstabilityunderthelimitedpowerandbandwidthInthisthesis，thespacetimefrequencycodeandseriallyconcatenatedconvolutionalorthogonalspace—timefrequencyco

6、dearestudiedTheorganizationofthisthesisisasfollowsFirst，thebackgroundandcurrentstudiesofthetechniquesofMIMOandOFDMandspacetimecodesaresummarizedSecondlythemodelofMLMOchannelareconstructed，andthecapacityofdifferentchannel

7、sarecalculatedBasedontheresultsofcomparingtheperformancesofcodedsystembetweenspacetimecodedOFDMsystemandspacefrequencycodedOFDMsystemtheperformanceofspacetimefrequencycodeisanalyzedandthedesigncriterionsforspace—timefreq

8、uencyarepresented，thenthecodinganddecodingalgorithmsofspacetimefrequencyblockcodeandspacetimefrequencytrelliscodearegivenindetailFinallyanOSTFC(orthogonalspacetimefrequencycode)whichcanachievethemaximumdiversitygainoverf

9、requencyselectivefadingchannelisproposedUsingtheOSTFCastheinnercode，aSCCOSTFC(SeriallyConcatenatedConvolutionalOrthogonalSpaceTimeFrequencyCode)schemeisdesignedforMIMOOFDMsystemoverthefrequencyselectivefadingchannelsItis