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基于改进型CORDIC算法的高速DDS设计.docx

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基于改进型CORDIC算法的高速DDS设计 Title:DesignofHigh-SpeedDirectDigitalSynthesizerBasedonImprovedCORDICAlgorithm Abstract: DirectDigitalSynthesizers(DDS)arewidelyusedinvariousapplicationssuchastelecommunications,radarsystems,andaudiosignalprocessing.ThekeycomponentofaDDSisthephaseaccumulator,whichdeterminestheoutputfrequencyofthesynthesizer.ThetraditionalCORDIC(CoordinateRotationDigitalComputer)algorithmiscommonlyemployedtoimplementthephaseaccumulatorduetoitssimplicityandlowhardwarecomplexity.However,theperformanceoftheconventionalCORDICalgorithmdegradesathighoperatingfrequencies.Inthispaper,weproposeanimprovedCORDICalgorithmtoenhancethespeedandaccuracyofaDDSdesign.Theimprovedalgorithmincorporatespipelining,parallelism,andoptimizedbit-widthrepresentationtechniques.Theproposeddesignachieveshigh-speedDDSoperationwhilemaintainingaconsiderablelevelofaccuracy.Simulationresultsdemonstratetheeffectivenessoftheproposedapproachintermsofspeed,accuracy,andhardwareefficiency. Keywords:DirectDigitalSynthesizer(DDS),CORDICalgorithm,high-speed,accuracy,hardwareefficiency Introduction: DirectDigitalSynthesizers(DDS)areessentialtoolsinmodernelectronicsystemsforgeneratingcontinuouswaveformswithvariousfrequenciesandwaveforms.TheDDStechniqueofferssuperiorperformanceintermsoffrequencyresolution,agility,andphasecoherencecomparedtotraditionalanalogsynthesizers.OneofthecorecomponentsofaDDSisthephaseaccumulator,whichaccumulatesphasevaluestogenerateanoutputwaveform.TheCORDICalgorithmiscommonlyusedtoimplementthephaseaccumulatorduetoitssimplicity,lowhardwarecomplexity,andefficientcomputation. However,thetraditionalCORDICalgorithmhaslimitationsinhigh-speedapplications.Astheoperatingfrequencyincreases,thecomputationtimerequiredforasinglephaseaccumulationalsoincreases,resultinginreducedperformanceandefficiency.Toovercometheselimitations,animprovedCORDICalgorithmisproposedinthispaper,whichexploitspipelining,parallelism,andoptimizedbit-widthrepresentationtechniques. ImprovedCORDICAlgorithm: TheimprovedCORDICal