I基于MATLAB的自适应均衡器的研究【摘要】:随着科技的发展，如何实现工作高效发展已经成为各个领域的首要因素，在通信领域亦是如此。ISI（码间串扰）是干扰时变通信质量和传输速度的主要因素。由于基带传输的通信系统不可能满足实际波形不失真的实时传输系统中，所以串扰是必然会发生的。通常把消除串扰的滤波器称为均衡器，它其实就是一个逆滤波器通道。信道失真在高速通信无线通信中会更加严重，从而信道均衡技术是成为了通信传输中不可缺少的。在通信系统中，优良的信道均衡器可以弥补信道不理想特性，降低信号传输错误率，从而达到降低信号失真的一种重要技术手段。本文介绍了自适应均衡器的设计原则，结合递归最小二乘算法和最小均方算法。最后运用MATLAB进一步分析仿真实现这些算法的自适应线性滤波器并分析其性能。【关键词】：LMS算法；自适应；线性均衡器；RLS算法IIResearchonAdaptiveEqualizerBasedonMATLABAbstract：Withthedevelopmentoftechnology，howtoefficientlyachievedevelopmenthasbecomeaprimaryfactorinvariousfield，isalsotrueinthefieldofcommunication.ISIisoneoftheimportantreasonsforvaryinginterferencecommunicationqualityandtransmissionspeed.Basebandtransmissionofthecommunicationsystemcannotmeetthereal-timeactualwaveformofundistortedtransmissionsystem，crosstalkisboundtoarise.Crosstalkeliminationcircuitusuallycalledequalizercamefromtheprinciplethatitisaninversefilterchannel.Incommunicationsystems，goodchannelequalizertocompensatefornon-idealcharacteristicsofthechannelinordertominimizesignaldistortion，animportanttechnologytoreducethetransmissionerrorrateofthesignal.Channeldistortioninahighspeedcommunication，wirelesscommunicationismoresevere，sothatchannelequalizationtechniquesbecomeindispensablecommunicationtransmission.Thearticledescribesthedesignprinciplesoftheadaptiveequalizer，combinedwithrecursiveleastsquaresalgorithmandtheminimummeansquarealgorithm.Finally，furtheranalysisofsimulationusingMATLABadaptivelinearfilterthesealgorithmsandanalyzetheirperformance.Keywords：LMSalgorithm；Adaptive；Linearequalizer；RLSalgorithmIII目录第一章绪论............................................................................................................................11.1均衡器研究背景及意义............................................................................................11.2国内外研究现状........................................................................................................21.3本文研究内容和主要工作........................................................................................3第二章自适应均衡器原理及其分类....................................................................................42.1信道............................................................................................................................42.2自适应均衡的原理和特点........................................................................................52.3自适应滤波器的分类和基本构成.............................................................................62.4自适应过程.................................................................................................................72.5横向滤波器的实现结构............................................................................................8第三章基于LMS算法的自适应均衡原理........................................................................103.1最小均方(LMS)算法基本原理...............................................................................103.2...
