24Microcontrollers&EmbeddedSystems2023年第4期www.mesnet.com.cnGABPNN的网络物理层传输安全加密方法管迎春,牟令,杨德超,黄威,刘必武(湖北能源集团新能源发展有限公司,武汉430000)摘要:面对当前物理层数据传输无法分离有效信号和噪声,造成信道一端接收到部分野值数据,从而导致信道传输加密效果不佳的问题,提出了基于GABPNN的网络物理层传输安全加密方法。构建多时隙加密传输模型,通过上行通信阶段1、2时隙,将信道容量信息转换处理后可得到密钥。通过下行通信阶段3、4时隙,译码与分组解密信息流,实现第一次信息安全传输。使用GA算法选择传输信道,计算个体适应值在传输信道群适应值中所占比例,通过迭代处理避免适应度值异常个体被选中,使GA算法收敛于全局,获取最优选择结果。实验结果表明,该方法经过滤波处理后获取的数据是无野值数据,滤波处理效果较好,且最大吞吐率为5000b/s,与理想吞吐率一致,说明使用该方法加密效果较好。关键词:GABPNN;网络物理层;传输安全;多时隙加密;Kalman滤波器中图分类号:TN918文献标识码:ASecurityEncryptionMethodofNetworkPhysicalLayerTransmissionBasedonGABPNNGuanYingchun,MouLing,YangDechao,HuangWei,LiuBiwu(HubeiEnergyGroupNewEnergyDevelopmentCo.,Ltd.,Wuhan430000,China)Abstract:Inthefaceoftheproblemthatthecurrentphysicallayerdatatransmissioncannotseparatetheeffectivesignalandnoise,whichcausesthechannelendtoreceivepartoftheoutlierdata,resultinginpoorchanneltransmissionencryptioneffect,anetworkphysicallayertransmissionsecurityencryptionmethodbasedonGABPNNisproposed.Buildingamulti-slotencryptedtransmissionmodel,thekeycanbeobtainedafterthechannelcapacityinformationisconvertedandprocessedthroughthe1and2slotsoftheuplinkcommunica-tionphase.Thefirstinformationsecuritytransmissionisrealizedthroughdecodingandpacketdecryptionoftheinformationflowthroughthe3and4timeslotsofthedownlinkcommunicationphase.UseGAalgorithmtoselectthetransmissionchannel,calculatethepropor-tionofindividualfitnessinthefitnessofthetransmissionchannelgroup,avoidtheselectionofindividualswithabnormalfitnessvaluesthroughiterativeprocessing,maketheGAalgorithmconvergetotheglobal,andobtaintheoptimalselectionresult.Theexperimentre-sultsshowthatthedataobtainedby...
