沙尘天气下无线光通信系统的性能分析

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1、学校代号10731学号137081001002分类号TP391密级公开硕士学位论文沙尘天气下无线光通信系统的性能分析学位申请人姓名OlaoyeOladipo培养单位计算机与通信学院导师姓名及职称王惠琴教授学科专业通信与信息系统研究方向WirelessOpticalCommunication论文提交日期2016年4月27日学校代号：10731学号：137081001002密级：公开兰州理工大学硕士学位论文沙尘天气下无线光通信系统的性能分析学位申请人姓名：OlaoyeOladipo导师姓名及职称：王惠琴教授培养单位：计算机与通信学院专业名称：通信

2、与信息系统论文提交日期：2016年4月12日论文答辩日期：2016年5月26日答辩委员会主席：PerformanceofWirelessOpticalCommunicationundersandanddustconditionByOlaoyeOladipoB.E.(LanzhouUniversityofTechnology)2013AthesissubmittedinpartialsatisfactionoftheRequirementsforthedegreeofMasterofEngineeringInCommunicationandIn

3、formationSystemIntheGraduateSchoolofLanzhouUniversityofTechnologySupervisorProfessorWangHuiqinMay,2016ABSTRACTWirelessOpticalcommunicationtechnology(WOC)hasbeengainingconsiderableattentionsincethebeginningoflastdecade.Itsnumerousbenefitshaveattractedvariousresearcherstothis

4、field.However,thechallengescausebyweatherisasignificantfactorthatmustbeconsideredinanattempttodeployanduseaWOC.ThisresearchfocusesonsandanddustinrelationtoitsimpactonWirelessOpticalCommunication.Thescatteringeffectsofthelasersignalduringatmosphericpropagationarestudiedindet

5、ailswithfocusonsingleandmultiplescatteringoflight.Also,theaerosolpropertiesandabsorptionintermsofopticalsignalingimpactinatmosphericpropagationoflasersignalsarealsostudied.Thechannelmodelsuitableforsanddustisset-upbasedonlog-normalfadingchannelbeforethederivationofclosedfor

6、mexpressionofBiterrorrate(BER)andchannelcapacity.Thesimulationresultsofthedifferentmodulationschemeusedarealsopresentedandtheresultsareanalyzedindetails.UsingtheOOKandPPMmodulationscheme,theBiterrorrate(BER)increasedwiththeexistenceofatmosphericturbulenceandthestrongerthetu

7、rbulence,theworsetheBER,besides,theincreaseofSNRshowsthatthechannelcapacityofthesystemincreases.TheexistenceofatmosphericturbulencewillcausetheincreaseofBER.Besides,giventhesameSNR,thestrongerturbulenceresultsinworseBER.Theaveragechannelcapacityofthesystem,showsthat:Withinc

8、reasingofSNR,thechannelcapacityofthesystemincreases.Thismeansthattheturbulencecaus