简介：ThispaperfirstcalculatesnumericallytheSymmetricInformationRate(SIR)ofCotinuousPhaseModulation(CPM)schemesoverAdditiveWhiteGaussianNoise(AWGN)channel,modelingCPMandchannelasaMemory-lessModulator(MM)plusaMarkovFiniteStateChannel(FSMC),thenproposesanoptimaldetector,whichisofBCJRbasedDecisionFeedbackDetector(DFD)butnon-iterative.ItcanachievetheSIRasthesequencelengthapproachesinfinitywhilethecomplexityisextremelylow.Finally,boththeoreticproofandnumericalsimulationareperformedtoshowtheop-timality.SimulationresultsshowthatitnearlyachievesthetheoreticboundandoutperformstheViterbiDetector(VD)with2dBinlowEb/N0.

简介：Forthecalculationofnon-linearmagneticfields,asimpleprogramcanbeaseffectiveasalargecommercializedsoftwarepackage.Ifrelaxationmethodsareused,theymustincludesuccessiveover-relaxationandunder-relaxationandmuchattentionmustbepaidtotherelaxationfactorandtheinterpolation.Inthispapersomeskillsareproposedonthesettingofaninterpolationswitchandthechoosingofsaturationpointsoastoassuresatisfiedconvergenceproperties.Thenumericalresultsbyusingthesemethodsconformwelltothetests.

简介：Thefixedframelengthmaximumcorrelationmethodwhichistheoptimummethodoverthebinarysymmetricchannelhasbeenproved.WithPoissondistribution,theframesyncacquisitionprobabilityisobtainedandfollowedbycomputersimulation.ByMarkovmodelingtechniques,theprobabilityandthemeantimeintolockmodearegiven.Finally,itisshownthattheoptimumframesyncmethodisfarsuperiortoconventional,anditisveryusefulinpractice.

简介：Byapplyingswitch-signaltheory,thetheoryoftransmissioncurrent-switchesbasedonsymmetricternarylogicisproposed,thistheoryissuitabletodesignsymmetricternarycurrent-modeCMOScircuits.Thesymmetricternarycurrent-modeCMOScircuitsdesignedbyusingthistheorynotonlyhavesimplercircuitstructuresandcorrectlogicfunctions,butalsocanprocessbidirectionalsignals.

简介：ThisstudyconcernssecurityissuesoftheemergingWirelessBodySensorNetwork(WBSN)formedbybiomedicalsensorswornonorimplantedinthehumanbodyformobilehealthcareappli-cations.Anovelauthenticatedsymmetric-keyestablishmentschemeisproposedforWBSN,whichfullyexploitsthephysiologicalfeaturesobtainedbynetworkentitiesviathebodychannelavailableinWBSNbutnototherwirelessnetworks.Theself-definedIntrinsicSharedSecret(ISS)isusedtoreplacethepre-deploymentofsecretsamongnetworkentities,whichthuseliminatescentralizedservicesorau-thoritiesessentialinexistingprotocols,andresolvesthekeytransportprobleminthepuresymmet-ric-keycryptosystemforWBSNaswell.Thesecuritypropertiesoftheproposedschemearedemon-stratedintermsofitsattackcomplexityandthetypesofattacksitcanresist.Besides,theschemecanbeimplementedunderalight-weightwayinWBSNsystems.DuetotheimportanceoftheISSconcept,theanalysisonusingfalseacceptance/falserejectionmethodtoevaluatetheperformanceofISSforitsusageintheschemeisalsodemonstrated.

简介：Thispaperdiscussesthedefinitionandpropertiesofmultivaluedsymmetricfunctions,pointsoutthatamultivaluedsymmetricfunctioncanbedecomposedaccordingtothevalueofthefunctionj.ThesubfunctionLjcorrespondingtojmustbeasymmetricfunction,anditmaybeexpressedasthesumofproductsformofdegeneratedmultivaluedfundamentalsymmetricfunctions.Basedonthisconsideration,thecircuitrealizationforthemultivaluedsymmetricfunctionsbasedonfulladdersisproposed.

简介：Thesecurityofthesymmetricprobabilisticencryptionschemebasedonchaoticattractorsofneuralnetworksisanalyzedanddiscussed.Firstly,thekeyuniquenessisprovedbyanalyzingtherotationtransformmatrixtoavoidtheattackoftheequivalentkey.Secondly,thedistributeduniformityofthenumbers'0'and'1'inthecorrespondingattractingdomainforeverychaoticattractorisanalyzedbythestatisticsmethod.Itistestifiedthatthedistributeduniformitycanbekeptifthesynapticmatrixoftheneuralnetworkischangedbyastandardpermutationmatrix.Twoannotationsbasedontheresultsaboveareproposedtoimprovetheapplicationsecurityoftheencryptionalgorithm.

简介：Thispaperdiscussesthedefinitionsandpropertiesoftwokindsoffundamentalsymmetricfunctions,whicharebasedonAND-OR-NOTalgebraicsystemandAND-ExclusiveORalgebraicsystem,respectively.Baseduponit,somemappingtransformationmethodsbetweentwokindsofexpansioncoefficientsofanarbitrarysymmetric,functioninthecompletesetoftwofundamentalsymmetricfunctions.