WCDMA系统中的Turbo码译码算法研究与实现的中期报告.docx
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WCDMA系统中的Turbo码译码算法研究与实现的中期报告.docx

WCDMA系统中的Turbo码译码算法研究与实现的中期报告.docx

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WCDMA系统中的Turbo码译码算法研究与实现的中期报告AbstractWiththeincreasingdemandforhigh-speedwirelessdatatransmission,thedevelopmentofwirelesscommunicationtechnologyhasbecomeincreasinglyimportant.Turbocodingisakeytechnologyinwirelesscommunicationsystems,whichcangreatlyimprovethetransmissionperformanceandreliabilityofwirelesscommunicationsystems.ThisreportaimstostudyandimplementtheturbodecodingalgorithmintheWCDMAsystem.Themaincontentsincludetheintroductionofturbocodingtheoryandturbodecodingalgorithm,theimplementationofturbodecodingalgorithmbasedonBCJRalgorithmandMAPalgorithm,simulationandverificationofturbodecodingalgorithmbasedonMATLABsoftware.IntroductionIntheWCDMAsystem,theuseofturbocodingcaneffectivelyimprovethesystem'santi-interferenceability,transmissionefficiencyanderrorcorrectionability.Theturbodecodingalgorithmisthekeytorealizethedecodingofturbocodes.Inthisreport,wemainlystudyandimplementtheturbodecodingalgorithmintheWCDMAsystem,andanalyzetheperformanceofturbocodes.Content1.Introductiontoturbocodingtheory1.1Principleofturbocoding1.2Turboencoderstructure1.3Turbodecodingalgorithm2.Turbodecodingalgorithmimplementation2.1BCJRalgorithm2.2MAPalgorithm3.Simulationandverificationofturbodecodingalgorithm3.1Simulationenvironmentandparameters3.2SimulationresultsanalysisConclusionInthisreport,wehavestudiedandimplementedtheturbodecodingalgorithmintheWCDMAsystem,andanalyzedtheperformanceofturbocodes.ThesimulationresultsshowthattheturbodecodingalgorithmbasedonBCJRalgorithmandMAPalgorithmcaneffectivelyimprovethedecodingperformanceofturbocodes.Infuturework,wewillfurtherstudytheoptimizationofturbodecodingalgorithmstoimprovetheanti-interferenceabilityanddecodingefficiencyofwirelesscommunicationsystems.