MIMO-CDMA系統(tǒng)中基于改進(jìn)遺傳算法的盲多用戶檢測.pdf

1、南京郵電大學(xué)碩士學(xué)位論文MIMOCDMA系統(tǒng)中基于改進(jìn)遺傳算法的盲多用戶檢測姓名：吳小勇申請學(xué)位級別：碩士專業(yè)：信息與通信工程指導(dǎo)教師：唐加山20090301南京I郵IU人學(xué)壩lojDt生學(xué)位論艾ABSTRACTABSTRACTWiththerapiddevelopmentofthemobiletelecommunicationtechnologyandnetworks，thewirelesscommunicationhasbecome

2、akeyfocusincommunicationindustryThelimitedwirelessresourceshavebeenanobstacletotherapidincrementofdatatrafficInthefutureofwirelesscommunication，somehotproblemsneedtobesolved，suchasgreatersystemcapacityfasterdatatransmiss

3、ionrates，higherspectrumefficiencyMIMOhasbeenakeytechnologyinthewirelesscommunication，duetothefactthatitcouldbegeminatelyincreasingthesystemcapacitywithoutincreasingbandwidthandtransceiverpowerMultipleaccessinterface(MAI)

4、doesnotonlyrestrictthedatatransmissionratesbutalsesultinnearfareffectThetraditionaldetectorcouldnotsuppresstheMAI，SOtheblindmulti—userdetectorbasedonintelligenthasbeenproposedanddevelopedrapidlyInthisthesis，afterstudiest

5、heMIMOCDMAsystemsandafewmulti—userdetectionalgorithms，wemainlyfocusonthemulti—userdetectionbasedongeneticalgorithmTheabilityoffindingtheglobaloptimizedsolutionusingthesimplegeneticalgorithm(SGA)isuptothestructureoftheini

6、tialpopulationAfteranalyzingtheeffectofthestructureforthepopulationofaGAonitsconvergencerateandperformance，achangeablepopulationbasedGA(CPGA)hasbeenproposed，itcouldbeovercometheprematureconvergenceAdditionallyanimproveda

7、daptiveGA(IAGA)hasbeenproposedbyanalyzingtheeffectofprobabilityforcrossandmutationonitsperformance，itimprovestheperformanceofGAbyusingeffectiveapproachformodificationofparametersandlogiccrossandlogicmutationapproachThenu

8、mericalcalculationresultsofthetestingfunctionsindicatethatthetwoalgorithmscouldconvergestotheglobaloptimizedresultquicklyIntheMIMO—CDMAsystem，underthreeperformancemeasurements，wesimulatethemultiuserdetectionusingSGA，CPGA

9、andIAGA，respectivelyThesimulationresultsalsoshowthat，comparingwithSGA，theCPGAandIAGAhavebetterperformanceTheorganizationofthisthesisisasfollowsChapter1describesthesignificanceofthisthemeandmainworkofthisthesisChapter2int