低压电力线噪声分析与建模

1,2,1,1(1.,210098;2.,210003):分析了低压电力线的通道特性,对1~30MHz频率范围内的噪声进行了分类并详细讨论其基本特性在基于试验定量测定的基础上,对背景(有色)窄带和脉冲三种主要的噪声给出了近似的模型函数:低压电力线;噪声分析;噪声模型;:TN915.853:A:1005-7641(2003)01-0031-04收稿日期:2002-06-11基金项目:国家电力公司资助科学技术项目(SPKJ011-11)作者简介:赵云峰(1976-),男,江苏泰州人,硕士研究生,研究方向是构件技术与系统仿真;汪晓岩(1962-),男,安徽安庆人,博士,高级工程师,从事信号处理电力通信系统研究工作;徐立中(1958-),男,江苏徐州人,博士,教授,从事信号处理图像压缩等方面的教学和研究工作;赵明宇(1976-),男,江苏高淳人,硕士研究生,研究方向是构件技术与系统仿真0(PowerLinecommunications,PLC),,35kV,40-500kHz,,,,,,,EnikiaIntellonIntellon,14MbPs,(4.3~20.9MHz)OFDM(),,,,,,,,,,1[35]50P60Hz,,:(1),,(2),(3),:1MbPs,(CENELECEN50065-1:3~148.5kHz,FCC:100~450kHz),,30MHz,,1~30MHz,1~30MHz#31#200312[134569],;,,1~30MHz2.1[4569]100kHz5,115(a);(b);(c);(d);(e)(1),,(PSD)(2),,24h,,,(3),,50~200kHz(4)50Hz,50Hz100Hz,,(5),,Intellon,[8],2,Intellon[8],(SNR),,20~30dB,22.2,[1],(1~3)(4~5)[67]3(1)[367],,,,3[7]Welch,,49m(5.95~6.2MHz)41m(7.2~7.5MHz)31m(9.4~10.1MHz)25m(11.8~12.1MHz),,;5MHz,2MHz,,#32#20031(2)[37](msLs),,dB(),,4(a)(b)43,,,:()3.1[1467]5,(Z):Hmod(Z)=B(Z)A(Z)=1+6mi=1biZ-11+6ni=1aiZ-1(1)B(Z)(MA),A(Z)(AR)R2AR,:B(Z)=1,AR,,53.2[167]N:Hnarrow(t)=6Ni=1Ai(t)sin(2Pfit+Ui)(2)fiAi(t)Ui[0,2P],,,(IFFT)3.3[26710],,,,A(i=1,2,,,v)B(i=1+v,2+v,,,n),Av,Bw=n-v5(k)5(k)=5[z(k)=zi]=0iIA1iIB(3)tw,kPW(k)=6Wj=1gw+1,jgkij(k=1,2,,,)(4)gw+1,jBjw+1(),gijB(),kPA(k)=6vj=1uv+1,jukij(k=1,2,,,)(5)uv+1,jAjv+1(),ukijA()(4)(5),#33#20031,,,,,[7]Markov,,,,,Markov[10],66MarkovMarkovC1();C2(,);E(,),[7]Markov:,;,,;,:4,,(),,,参考文献:[1]KBegain,MErmel.ModelingofAPLCAccessNetwork[DBPOL].http:M~hrasnica.[2]BDFritchman.ABinaryChannelCharacterizationUsingPart-itionedMarkovChains[J].IEEETrans.onInform.Theory,1967,13(2):221-227.[3]OGHooijen.AChannelModelfortheResidentialPowerCircuitUsedasaDigitalCommunicationsMedium[J].IEEETrans.onElectromagneticCompatibility.1998,40(4):331-336.[4]HHrasnica,AHaidine.ModelingMACLayerforPowerlineCommunicationsNetworks[R].SPIE.sSymposiumonInforma-tionTechnologies2000.Conference,/Internet,PerformanceandControlofNetworkSystems0,USA,2000:161-168.[5]RMVines.NoiseonResidentialPowerDistributionCircuits[J].IEEETrans.onElectron.Compa.,1984,26(4):13-21.[6]MZimmermann,KDostert.TheLowVoltagePowerDistributionNetworkasLastMileAccessNetwork-SignalPropagationandNoiseScenariointheHF-Range[J].Int.J.Electron.Com-mun.(AEU),2000,54(1):131-138.[7]MZimmermann,KDostert.AnAnalysisoftheBroadbandNoiseScenarioinPowerlineNetworks[C].Proceedingsofthe4thInter-nationalSymposiumonPowerlineCommunicationsanditsAppl-ications,Limerick,Ireland,2000:27-31.[8],.OFDM[J].,2001,25(9):27-31.[9],.OFDMMAT-LAB[J].,2002,23(2):2-6.[10],.Markov[C]..2002:286-289.Noiseanalysisandmodelingoflow-voltagepowerlineZHAOYun-feng1,WANGXiao-yan2,XULi-zhong1,ZHAOMing-yu1(1.ComputerandInformationEngineeringCollege,HohaiUniv.,Nanjing210098,China;2.NanjingAutomationResearchInstitute,Nanjing210003,China)Abstract:Afterthelow-voltagepowerline.schannelpropertiesareanalyzed,noisesinthefrequencyrangebetween1~30MHzaresortedandtheirpropertiesaregivenindetail.Basedonexperimentation,thethreemainnoisesincludingbackground(colored)noise,narrow-bandinterferenceandimpulsenoisearepresentedintheapproximatefunctionmodels.Keywords:low-voltagepowerline;noiseanalysis;noisemodel#34#20031