有限脈沖響應(yīng)濾波器的設(shè)計(jì)與實(shí)現(xiàn).pdf

1、中南大學(xué)碩士學(xué)位論文有限脈沖響應(yīng)濾波器的設(shè)計(jì)與實(shí)現(xiàn)姓名：謝佳峰申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：控制科學(xué)與工程指導(dǎo)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