B3G關鍵技術研究——非正則LDPC部分并行譯碼器設計與實現(xiàn).pdf

1、分類號UDC81密級y967523學位論文B3G關鍵技術研究——非正則LDPC部分并行譯碼器設計與實現(xiàn)(題名和副題名)張彬(作者姓名)指導教師姓名奎塵謙墊援蝗昱電壬科撞太堂廑都(職務、職稱、學位、單位名稱及地址)申請專業(yè)學位級別亟專業(yè)名稱適籃蔓垡皇薹統(tǒng)論文提交日期20064論文答辯日期2QQ魚15學位授予單位和日期電壬抖撞太堂答辯委員會主席評閱人2006年月注l：注明《國際十進分類法UDC))的類號。日AB譬nb、CTABSTRACTI

2、nordertoachieveareliablecommunicationoverwirelesscharmels，CITOTcorrectioncodesshouldbeusedincommunicationsystemsLowdensityparitycheck(LDPC)code，whichisaspecialcaseoferrorcorrectioncodewithsparseparitycheckmatrix，hasthepe

3、rformanceveryclosetotheShannonLimitThepropertiesofLDPCcodearelowcomplexityandhighthroughputDuetotheexcellentperformance，LDPCcodehasbeenstudiedwithmoicandmoreattentionsHowever，theeffectivehardwareimplementationofaLDPCdeco

4、derbecomesacrucialissueinpracticalsystemsWiththedevelopmentofmobileCOmmunicationtechnologythesiudyofbeyond3GmobilecommunicationsystemhasentereddesignandimplementationphaseInordertosatisfytheneedinavarietyofservicesandthe

5、highdatalateLDPCcodeisusedforchannelcodeintheB3GsystemThepurposeofthisthesisistostudythehardwarearchitectureofLDPCdecoderinB3GsystemandtheFPGAimplementationschemeFollowingashortbackgroundintroductionofchannelcoding，theth

6、esisdescribesLDPCcodeanddecodingalgorithmBP_basedalgorithmisusedforthedecoderofthearchitectureinthispaper，duetolowcomplexityThlcedecoderarchitectures，parallel，serialandpartially—parallelapproaches，areanalyzedinthisthesis

7、Akindofnovelpartially—parallelarchitecturefordecodingLDPCcodeisproposedThetrade—offbetweentheperformanceofthedecoderhardwarecomplexityanddatathroughoutcanbeachievedwiththispan詞1yparMlelarchitecturefortherandomparitycheck

8、matrixBycolumnexchanging，the(m，n)paritycheckmatrixisdividedintok佃，坷)submatrixeswhichobeythesamemlesThedecoderprocessesmessagesinparallelmodebetweenksub—matrixes，buttheserialmodeiSusedinsub—matrixesdecodingmB3GsystemtheLD

9、PCcodehasbeenusedwiththerandomirregularparitycheckmatrix，whichthedatalengthis3944TheLDPCdecoder，describedintheVerilogHDkhasbeenimplementedwithXilinxFPGAdeviceVirtex—IIPr070Themaximumthroughoutofthisdecoderis65Mbpswith20i