[毕业设计 论文 精品]lms及其改进算法研究 毕业设计及任务书

计算机与通信学院本科生毕业论文LMS及其改进算法研究THESTUDYOFLMSALGORITHMANDITSIMPROVEALGORITHMS作者学号专业通信工程班级通信4班指导教师答辩时间2010年6月2毕业论文任务书通信工程本科专业（06级）题目LMS及其改进算法研究学生姓名班级06级通信4班学号题目类型科学研究（K）指导教师一毕业论文题目简介近年来，自适应信号处理引起了人们显著的兴趣和关注。微电子技术和VLSI电路技术的发展，极大地提高了数字信号处理的计算速度，从而进一步促进了这一方向的发展。该题目要求学生首先研究现有的各种自适应信号处理方法，重点研究LMS及其改进算法的原理及优缺点，并能采用计算机语言来实现这些算法并进行性能比较和分析。学生通过该题目的分析与研究，不仅可以学习自适应信号处理的理论基础，深入了解并掌握LMS及其改进算法的理论基础及实现方法，而且还可以提高学生解决实际问题的能力，并为将来在这一领域的深入研究打下G2405G1754的理论基础。二毕业论文的任务G20G99G1040G4199G3757关G3635G3748G4487G2424，要求在G20G19G2857以G3176，G3571G3635G4487G2424不G3186G4127G21G2857G290G21G99学习G99研究LMS及其改进算法，从理论G3176分析各种自适应G2514G975算法的优缺点，G4346G3036提G1147改进算法。G22G99G2374用计算机语言G1395LMS及其改进算法进行G1471G4327实现，并G1395G3409们的性能G4532以比较。G23G99G4456G3807G920G3996论G3635G290G24G99G3579G1102G20G16G22G3587G1617字G1528的G3571G3635G4487G2424G1450G4050。三毕业论文的主要内容、要求及技术指标G20G99学习并掌握LMS及其改进算法的基G903原理和G3467点G290G21G99比较LMS及其改进算法的优缺点G290G22G99G1395LMS及其改进算法G1619G1147G3757应的MATLABG1895其G3409计算机语言的G1471G4327。G23G99G1395G1471G4327G2066G1716进行分析G99比较，G1284G1147自G1933的G2066论。四毕业论文提交的成果G20G17G920G3996论G3635一G1498。G21G17G3579G1102G20G19G19G19G19G16G22G19G19G19G19G1617G4070G3319G1528号的G3571G3635G3635G3748G1450G4050G1600一G2857。G22G17G3579G1102G920G3996论G3635G1989G2074一G1498，要求G23G3994，G2227技论G3635G1612G3252。G23G17G2233G4389G1691G2797一G4294G2903五毕业论文的主要参考文献1A1A3A0A2A1A6A4A5A7A8A9A9A10A13A14A11A12A15A16A1A19A17A18A20A21A22A23A26A27A24A24A25A1A27A1A30A28A29A26A33A31A1A16A32A6A4A5A7A8A9A1A17A34A9A35A18A20A21A22A23A26A38A36A36A36A1A40A1A41A37A39A26A44A42A26A3A42A43A1A6A4A5A7A8A9A1A47A43A45A46A21A22A23A26A27A24A24A25A1A25A1A50A48A49A1A53A51A52A54A55A56A57A58A59A1A62A60A61A28A61A63A18A20A21A22A23A26A38A36A36A38A1A66A1A67A64A26A69A65A43A1A68A70A71A72A70A73A76A74A16A32A35A75A6A4A5A7A8A9A1A79A77A78A80A81A82A18A20A21A22A23A26A27A24A24A27A16A85A83A84A86A55A56A57A5A7A8A9A81A20A21A22A23A2620027A89A87A88A86A55A56A57A5A7A8A9A79A77A78A80A81A82A18A20A21A22A23A262001六各阶段时间安排（共13周）A90A91A92A93A91A92A94A95A94A95A96A97A98A99A96A97A100A101A102A103A102A103A104A105A106A107A106A107G3366G1922G1013G2217G4487G2424，分析题目要求。1周322326学习自适应信号处理的基础G4361G3245。2周32942研究LMS算法。3周4549研究LMS算法的各种改进算法。4周412416研究LMS算法的各种改进算法。5周419423比较各种算法。6周426430G937G1105G1336G3275。7周5357G937G1105G1336G3275。8周510514G937G1105G1336G3275。9周517521G4456G3807G920G3996论G3635。10周524528G4456G3807G920G3996论G3635。11周53164G3849改G920G3996论G3635。12周67611G4473G897G1235G944。13周6146182010年3月16日4摘要因LMS算法具有低计算复杂度、在平稳环境中的收敛性好、其均值无偏地收敛到WIENER解和利用有限精度实现算法时的稳定性等特性，使LMS算法成为自适应算法中应用最广泛的算法。对LMS算法及其改进算法进行了研究，探讨了步长因子N对各种算法收敛性、稳定性的影响。并用MATLAB对其学习曲线、收敛速度等进行了仿真分析。结果表明，变步长N的取值尤为重要，如果（N）取较大值则具有较快的收敛速度，如果（N）取值很G4579，则MLMS算法G17829G1296等G6940G1122LMS算法。G4439G1216的自适应G17819G12255较快，性G14033有了很大改进。5ABSTRACTBECAUSEOFLOWCOMPUTATIONALCOMPLEXITY,STABLEENVIRONMENTINTHECONVERGENCEOFGOOD,UNBIASEDANDITSMEANCONVERGESTOTHEWIENERSOLUTIONANDIMPLEMENTATIONALGORITHMSUSINGFINITEPRECISIONSTABILITYANDOTHERCHARACTERISTICS,LMSALGORITHMASADAPTIVEALGORITHMINTHEAPPLICATIONOFTHEMOSTAWIDERANGEOFALGORITHMSWEHAVEADETAILEDSTUDYONLMSALGOTITHMANDITSCOMPLEMENTARYALGOTITHM,DISSCUSEDTHESTEPSIZESINFLUENTFORTHEALGORITHMSCONVERGENCESPEEDANDSTABILITYANDUSINGMATLABSIMULATEDTHELEARNINGCURVE,CONVERGENCESPEEDOFLMSALGOTITHMTHERESULTOBSERVEDTHATTHEVALUEOFVARIABLESTEPSIZE（N）ISVERYIMPORTANT,IFITISABIGGERMAYHAVEAFASTCONVERGENCESPEED,BUTIFNOT,THENLMSALGOTITHMCANINSTEADTHELMSALGOTITHMINTHECHARACTERISTICSINADDITION,THEYHAVEAFASTADAPTIVECOURSEANDGREATLYPROGRESSINPERFORMANCEKEYWORDSLMSALGORITHM，ADAPTIVE，NLMSALGORITHM，VARIABLESTEP，MATLABSIMULATION6目录A108A109A110A111A112A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A114A115A113A115A116A117A118A119A120A121A112A122A123A124A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A113A114A125A126A127A128A129A130A131A132A133A134A135A136A137A138A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A139A125A126A127A126A125A131A132A133A134A135A140A141A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A139A125A126A127A126A127A131A132A133A134A135A136A142A143A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A126A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