資源描述：
《CIC Filter Introduction》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、CICFilterIntroductionMatthewP.Donadiom.p.donadio@ieee.org18July2000ForFreePublicationbyIowegian1IntroductionAsdataconvertersbecomefasterandfaster,theapplicationofnarrow-bandextractionfromwidebandsources,andnarrow-bandconstructionofwidebandsignalsisbecomingmoreimportant.Thesefu
2、nctionsrequiretwobasicsignalprocessingprocedures:decimationandinterpolation.Andwhiledigitalhardwareisbecomingfaster,thereisstilltheneedforecientsolutions.Techniquesfoundin[CR83]workverywellinpractice,butlargeratechangesrequireverynarrowband lters.Largeratechangesrequirefastmu
3、ltipliersandverylong lters.ThiscanendupbeingthelargestbottleneckinaDSPsystem.In[Hog81],anecientwayofperfomingdecimationandinterpolationwasintroduced.Hogenauerdeviseda
exible,multiplier-free ltersuitableforhardwareimplementation,thatcanalsohandlearbitraryandlargeratechanges.Th
4、eseareknownascascadedintegrator-comb lters,orCIC ltersforshort.Thispapersumarizesthe ndingspublishedin[Hog81].Anoverviewcanalsobefoundin[Fre94].AnextensionofCIC ltershasbeenpublishedin[KJW97],andisbrie
ymentionedhere.Whenindoubt,thereadershouldrefertothesesources.2BuildingBloc
5、ksThetwobasicbuildingblocksofaCIC lterareanintegratorandacomb.Anintegratorissimplyasingle-poleIIR lterwithaunityfeedbackcoe cient:y[n]=y[n
