学科分类
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68 个结果
  • 简介:在这份报纸,一个可伸缩的基于连接的流动控制计划为应用相关的network-on-chip(NoC)被建议。建议计划利用NoC,也就是交通的可预测性和丰富的电线资源的二个特殊特征,到完成重要表演改进。首先,爆炸注射数据被调整进经常的数据溪流,一个基于连接的方法被用来保证所有连接没在任何时间被过载。因而,在网络的包的数字被减少,导致减少的拥挤可能性并且改进了通讯性能。第二,中央控制器的简单体系结构被建议保证建议计划有小区域开销并且是可伸缩的。模拟结果证明与传统的switch-to-switch(圣)相比,流动控制计划和分配前基于流动控制计划,建议计划极大地增加产量并且与合理区域和精力开销砍倒平均潜伏。

  • 标签: 流量控制 应用程序 可扩展 网络芯片 连接 控制计划
  • 简介:Shannonentropyintimedomainisameasureofsignalorsystemuncertainty.Whenbasedonspectrumentropy,Shannonentropycanbetakenasameasureofsignalorsystemcomplexity.Therefore,waveletanalysisbasedonwaveletentropymeasurecansignifythecomplexityofnon-steadysignalorsysteminbothtimeandfrequencydomain.Inthispaper,inordertomeettherequirementsofpost-analysisonabundantwavelettransformresultdataandtheneedofinformationmergence,thebasicdefinitionofwaveletentropymeasureisproposed,correspondingalgorithmsofseveralwaveletentropies,suchaswaveletaverageentropy,wavelettime-frequencyentropy,waveletdistanceentropy,etc.areputforward,andthephysicalmeaningsoftheseentropiesareanalyzedaswell.TheapplicationprincipleofwaveletentropymeasureinElectroEncephaloGraphy(EEG)signalanalysis,mechanicalfaultdiagnosis,faultdetectionandclassificationinpowersystemareanalyzed.Finally,takethetransmissionlinefaultdetectioninpowersystemforexample,simulationsintwodifferentsystems,a10kVautomaticblockingandcontinuouspowertransmissionlineanda500kVExtraHighVoltage(EHV)transmissionline,arecarriedout,andthetwomethods,waveletentropyandwaveletmodulusmaxima,arecompared,theresultsshowfeasibilityandapplicationprospectofthesixwaveletentro-pies.

  • 标签: 平均信息量 子波 测量方法 电子
  • 简介:Duetothedemandofdataprocessingforpolariceradarinourlaboratory,aCurveletThresholdingNeuralNetwork(TNN)noisereductionmethodisproposed,andanewthresholdfunctionwithinfinite-ordercontinuousderivativeisconstructed.ThemethodisbasedonTNNmodel.InthelearningprocessofTNN,thegradientdescentmethodisadoptedtosolvetheadaptiveoptimalthresholdsofdifferentscalesanddirectionsinCurveletdomain,andtoachieveanoptimalmeansquareerrorperformance.Inthispaper,thespecificimplementationstepsarepresented,andthesuperiorityofthismethodisverifiedbysimulation.Finally,theproposedmethodisusedtoprocesstheiceradardataobtainedduringthe28thChineseNationalAntarcticResearchExpeditionintheregionofZhongshanStation,Antarctica.Experimentalresultsshowthattheproposedmethodcanreducethenoiseeffectively,whilepreservingtheedgeoftheicelayers.

  • 标签: 雷达数据处理 阈值函数 降噪方法 神经网络 冰层 极地
  • 简介:Room-temperatureterahertz(THz)detectorsindicateagreatpotentialintheimagingapplicationbecauseoftheirreal-time,compactbulk,andwidespectralbandrespondingcharacteristics.THzdetectorswithdifferentdimensionsbasedonamicro-bridgestructurehavebeendesignedandfabricatedtogetoptimizedmicro-bolometerparametersfromthetestresultsofmembranedeformation.Ananostructuredtitanium(Ti)thinfilmabsorberisintegratedinthemicro-bridgestructureoftheVOxmicro-bolometerbyacombinedprocessofmagnetronsputteringandreactiveionetching(RIE),anditsimprovementofTHzabsorptionisverifiedbyanopticalcharacteristicsmesurement.Continuous-waveTHzdetectionandimagingaredemonstratedbyusinga2.52THzfarinfraredCO2laseranda320×240vanadiumoxidemicro-bolometerfocalplanearraywithanoptimizedcellstructure.Withthisdetectingsystem,THzimagingofmetalconcealedinawipingclothandanenvelopeisdemonstrated,respectively.

  • 标签: 微测辐射热计 太赫兹成像 焦平面阵列 探测器 设计 应用
  • 简介:Thispaperpresentsthesimulationandmeasuredresultsofatriple-bandL-shapedmonopoleantennawithdefectedgroundplaneforapplicationsinwirelesslocalareanetworks(WLANs)andworldwideinteroperabilityformicrowaveaccess(WiMAX)bands.Thetriple-bandL-shapedmonopoleantennawithdefectedgroundplanewasfabricatedonaFR4substrate.Thelowerbandisassociatedwiththeshortedparasiticstripintheprotrudingstubofthegroundplane;themiddlebandisexpectedtobecontrolledbythelongerstripofL-shapedmonopoleinthefrontside,whilethehigherbandisassociatedwiththeshortstripofL-shapedmonopoleinthefrontside.Theproposedantennahasagoodagreementbetweenthemeasuredandthesimulationresults.Ithasa10dBreturnlosswiththebandwidthof250MHz(2270MHzto2520MHz)inthelowerband,600MHz(3320MHzto3,920MHz)inthemiddleband,and1110MHz(5030MHzto6140MHz)inthehigherband.TheproposedantennacoverstheISM(industrial,scientificandmedical),HIPERLAN(highperformanceradiolocalareanetwork),UNII(unlicensednationalinformationinfrastructure),andWiMAXbands.

  • 标签: 单极子天线 WIMAX WLAN 地平面 L形 缺陷
  • 简介:与微分双相编码给调音的振幅移动(D8PSK/ASK)调音的微分8水平阶段移动(DBC)的一种新奇直角的调整格式的原则被介绍。基于它,一个光标记计划,收费载重在是100Gbit/sD8PSK信号和标签是10Gbit/sDBC问信号,被建议并且模仿。结果与另外的当前的计划相比,并且传播的效果变化调整扑灭比率(嗯)并且系统性能上的收到的功率分别地被分析。光谱效率和小点错误评估的结果表演(BER)极大地被改进,并且什么时候调整嗯被增加到11dB,在收费载重和标签之间的平衡表演被完成。

  • 标签: 双相编码 标签 差分 正交 光网络 PSK信号