学科分类
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6 个结果
  • 简介:Wirelesssensornetworks(WSNs)consistofsensornodesthatbroadcastamessagewithinanetwork.Efficientbroadcastingisakeyrequirementinsensornetworksandhasbeenafocalpointofresearchoverthelastfewyears.Therearemanychallengingtasksinthenetwork,includingredundancycontrolandsensornodelocalizationthatmainlydependonbroadcasting.Inthispaper,weproposeabroadcastingalgorithmtocontrolredundancyandimprovelocalization(BACRIL)inWSNs.Theproposedalgorithmincorporatesthebenefitsofthegossipprotocolforoptimizingmessagebroadcastingwithinthenetwork.Simulationresultsshowacontrolledlevelofredundancy,whichisupto57.6%ifthenumberofsensornodesdeployedina500m500mareaareincreasedfrom50to500.

  • 标签: 无线传感器网络 广播算法 冗余控制 节点定位 受控 传感器节点
  • 简介:ThemultilevelmodulationtechniquesofM-DifferentialAmplitudePhaseShiftKeying(DAPSK)havebeenproposedincombinationwithTurbocodeschemefordigitalradiobroadcastingbandsbelow30MHzradiochannel.ComparisonofthismodulationmethodwithchannelcodinginanAdditiveWhiteGaussianNoise(AWGN)andmulti-pathfadingchannelshasbeenpresented.TheanalysisprovidesaniterativedecodingoftheTurbocode.

  • 标签: 数字无线广播 Turbo码 移相键控