简介：ThispaperpresentsanotherformalproofforthecorrectnessoftheDeadlineDrivenScheduler(DDS).ThisproofisgivenintermsofDurationCalculuswhichprovidesabstractionforrandompreemptionofprocessor.Comparedwithotherapproaches,thisproofreliesonmanyintuitivefacts.Thereforethisproofismoreintuitive,whileitisstillformal.

简介：我们在场在Hoare风格节目逻辑的标准标记打扫无用单元收集程序的保守变体的机器级的实现的确认。收集者的说明用分离逻辑在一个机器级的存储模型上被给，并且是足够强壮的保存任何普通mutator节目的安全性质。我们的确认充分在Coq证明助手被实现并且能作为带证明的代码包装的foundational立即被包装。我们的工作向造充分证明的生产质量无用单元收集程序做重要尝试。电子增补材料这篇文章(doi:10.1007/s11390-007-9049-z)的联机版本contatins增补材料，它对授权用户可得到。

简介：ItisgenerallyacknowledgedthatmobilecommunicationbasestationsarecomposedofhardwarecomponentssuchasFieldProgrammingGateArray(FPGA),DigitalSignalProcessor(DSP),whichpromisereliableandfluentservicesforthemobileusers.However,withtheincreasingdemandforenergy-efficiency,approachesoflowpower-consumptionandhigh-flexibilityareneededurgently.Inthiscircumstance,GeneralPurposeProcessor(GPP)attractspeople'sattentionforitslow-costandflexibility.BenefitedfromthedevelopmentofmodernGPPinmulti-core,SingleInstructionMultipleData(SIMD)instructions,largercache,etc.,GPPsarecapableofperforminghigh-densitydigitalprocessing.Inthispaper,wecompareseveralsoftware-definedradio(SDR)prototypesandproposethegeneralarchitectureofGPP-basedsoftbasestations.Then,theschematicdesignofresourceallocationandalgorithmoptimizationinsoftbasestationimplementationarestudied.Asanapplicationexample,aprototypeofGPP-basedsoftbasestationreferringtothe3rdGenerationPartnershipProject(3GPP)LongTermEvolution(LTE)isrealizedandevaluated.Tothebestofourknowledge,itisthefirstSoft-LTEprototypeeverreported.Intheend,weevaluatethetimingperformanceoftheLTEsoftbasestationandapacketlossratiooflessthan0.003isobtained.

简介：Somepreliminaryresultsonstrictboundedreallemmafortime-varyingcontinuouslinearsystemsareproposed,whereuncertaintyininitialconditions,terminalcostandextremeofthecostfunctionaredealtwithexplicitly.Basedontheseresults,anewrecursiveapproachisproposedinthenecessityproofofstrictboundedreallemmaforgeneralizedlinearsystemwithfinitediscretejumps.

简介：多进制正交振幅调制（MQAM）是在中、大容量数字通信系统大量使用的一种载波键控方式。MQAM是对载波的振幅和相位同时进行调制的一种复合的调制形式．他同时利用了载波的幅度和相位来传递信息比特。在调制的进制数较高时，信号矢量集的分布也比较合理，同时实现起来也比较方便，具有更大的符号率，从而获得更高的系统效率。通常由符号率确定占用带宽，因此每个符号的比特（基本信息单元）越多，效率就越高：基于地面数字电视国标ADTB—T规格，采用了一种QAM软判决解映射算法，其中以32QAM为倒进行说明其性能良好．有较好的可行性。

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简介：Identity-basedhashproofsystemisabasicandimportantprimitive.Ittographicschemesandprotocolsthataresecureagainstkey-leakageattacks.Inthisupdatableidentity-basedhashproofsystem,inwhichtherelatedmastersecretkeyiswidelyutilizedtoconstructcryp-paper,weintroducetheconceptofandtheidentitysecretkeycanbeupdatedsecurely.Then,weinstantiatethisprimitivebasedonlatticesinthestandardmodel.Moreover,weintroduceanapplicationofthisnewprimitivebygivingagenericconstructionofleakage-resilientpublic-keyencryptionschemeswithanonymity.Thisconstructioncanbeconsideredastheintegrationofthebounded-retrievalmodelandthecontinualleakagemodel.Comparedwiththeexistingleakage-resilientschemes,ourconstructionnotonlyismoreefficientbutalsocanresistmuchmorekeyleakage.