有限脈沖響應濾波器的設計與實現(xiàn).pdf

1、中南大學碩士學位論文有限脈沖響應濾波器的設計與實現(xiàn)姓名：謝佳峰申請學位級別：碩士專業(yè)：控制科學與工程指導教師：譚冠政20100401ABSTRACTFiniteimpulseresponse(FIR)digitalfiltersarewidelyusedascommoncomponentsinmanydigitalsignalprocessing(DSP)systemsSincethecomplexityofimplementation

2、growswiththefilterorder，thedes!gnofhardwareefficientandhighthroughputFIRfilterhasbecomemuchmoredemandingMultiplierlessmemorybasedtechniqueshavebeenwidelyusedinmanyapplications，inrecentyears，fortheirhighthroughputprocessi

3、ngandcost—effectivestructuresOneofthetechniquesiSbasedondistributedarithmetic(DA)forinnerproductcomputationIntheDA—basedimplementation，thelookuptable(LUT)storesallpossiblevaluesofinnerproductofthefixedcoe伍cientsandtheinp

4、utbitvectorHowever，sincethememoryrequirementofDA。basedimplementationincreasesexponentiallywiththelengthoffilterorderTherefore，inthispaper，weextendfurthertoobtainanefficientdesignforFIRfilterimplementationFirst，anewDAalgo

5、rithmforFIRfilterimplementationisproposed，whichisbasedontheexistingoffsetbinaryDAalgorithmInconventionalDAbaseddesign，thevaluesstoredintheLUTarea11intwo’ScomplementrepresentationOnonehand，itbringsbenefittothesignalproces

6、sing，whileontheotherside，itincreasesthepowerconsumptionofadesignInthenewDAbaseddesign。thevaluesstoredintheLUTareallnonnegativevaluesThusthevaluesstoredintheLUTdonotrequirethetwo’Scomplementrepresentation，andthereafterthe

7、powerconsumptionCanbereducedSystolicdesignshaveanefficientarea—timeimplementation，beingsupportedbyitsfeaturesuchasmodularityandregularityofthestructureBesidestheyalsopossesspotentialtoobtainlOWlatencyimplementationsincea

8、lltheprocessingelements(PEs)inthesystolicarrayarefullypipelinedTheconventionalstructureoftheFIRfilterhoweveriSnotthesystolicstructure，andthereforeitneedsimprovementⅥmileintheexistingDAbasedsystolicstructure，itinvolvestoo