Rician衰落信道下多址多載波MFSK系統(tǒng)的性能分析.pdf

1、學科門燮王堂分類q：—!!!i!單位代碼：—j堡!!一密級：——舟毒都諺乒碧碩士學位論文論文題lj：墾型竺垂鱉笪墮工壘些蘭亟塑MFSK系統(tǒng)的性能分析學生姓名孫明發(fā)學指導學科號教師專業(yè)碩050808王保云教授信號與信息處理研究方向現(xiàn)代通信中的智能信號處理技術(shù)論文提交日期二oo八年四月南京郵電大學碩L研究生學位論文ABSTRACTABSTRACTSincethe1980s，severalfrequency—hoppingspreadspec

2、trummultiple—access(FH—SSMA)systemsincludingMFSK／FHSSMAsystemshavebeenproposed，inresponsetotheincreasingdemandforefficientmultipleaccesstechniquesinpersonalbroadbandcommunicationservicesHowevertheconventionalMFSK／FHSSMAs

3、ystemsalsohavesomeproblemsIn2000，SinhaandYatesproposedanewmulticarrierMFSKmultipleaccess(MeMFSK)systemthathassomedesirablepropertiesoffrequencydiversityandnearfarresistanceInthispaperaperformanceanalysisMC—MFSKsystemover

4、RicianfadingchannelsispresentedFirstlyvariousfadingchannelsincludingtheirmathematicalmodelsareintroducedAndthenthispaperilluminatesthebasicprinciplesoftheMC—MFSKsystemLastlyitanalysestheperformanceofMC—MFSKsystemTheMCMFS

5、Kisanewmultipleaccesstechnique，inwhichthesignaltonesaretransmittedovermultiplesubcarriersusingorthogonalfrequencydivisionmultiplexing(OFDM)Inordertocomputethesystemerrorprobabilityperformance，thispaperderivestheprobabili

6、tydensityfunction(PDF)forthereceiverdetectoroutput，whichistheenvelopofthesumofmultipleRiciansignalsandGaussiannoiseThispaperalsoconductssimulationstovalidatethetheoryandprovidesphysicalexplanationsoftheeffectsofvariouspa

7、rameterssuchasthenumberofsubcarriersorthefrequencydiversityorderonthecapacityperformanceoftheMCMFSKsystemThePDFofthereceiverdetectoroutputisintheformofadefiniteintegralofarathercomplicatedfunctionInordertocomputetheperfo

8、rmanceexpedientlyaclosed—formapproximationsolutiontothiscomplicatedfunctionisnecessaryThispaperappliesthePadeApproximation(PA)methodtosolvethisproblemAndfromthePDFthispaperderivessomeparameterssuchastheoptimaldetectionth