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时间:2020-04-18
《基于光环路正交频分多址无源光网络的光拍频噪声避免方案及性能仿真-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第43卷第7期光子学报Vo1.43NO.72014年7月ACTAPHOT0NICASINICAJuly2O14doi:i0.3788/gzxb2O1443O7.0706008基于光环路正交频分多址无源光网络的光拍频噪声避免方案及性能仿真乔耀军,王蕾,赵远征,纪越峰(北京邮电大学信息光子学与光通信国家重点实验室,北京100876)摘要:在正交频分多址无源光网络上行传输中,不同光网络单元的上行信号如果采用相同波长的不同激光器将会产生光拍频噪声,使得光网络单元的无色性难以实现.本文以正交频分多址无源光网络为研究对象,通过对系统结构的研究
2、和相关公式的推导,分析了信号上行传输中光拍频噪声的产生原因和避免方式.针对下行发送上行载波结合光线路终端相干接收的光拍频噪声避免方案进行了仿真研究.分析了系统的抗色散方案以及色散累积和训练序列长度对系统性能的影响,给出了优化的参数设置,为系统实际应用提供了理论参考.关键词:光通信;无源光网络;仿真分析;正交频分多址无源光网络;光拍频噪声;物理层损伤中图分类号:TN915.63;TN913.7文献标识码:A文章编号:1004—4213(2014)07—0706008—6TheSimulationofOpticalBeatingInt
3、erferenceAvoidanceSchemeandSystemPerformanceinOrthogonalFrequencyDivisionMultipleAddressPassiveOpticalNetworkSystemBasedonOpticalLoopQIAOYao—jun,WANGLei,ZHAOYuan~zheng,j1Yue—feng(StateKeyLaboratoryofInformationPhotonicsandOpticalCommunications,BeOingUniversityofPostsa
4、ndTelecommunications,100876,China)Abstract:InOrthogonalFrequencyDivisionMultipleAccessPassiveOptica1Network(0FDMA—P0N)upstreamtransmission,theOpticalBeatingInterference(0BI)willbeproducedifeach0NUusesdifferentlaserswiththesamewavelength.ThecolorlessONUiShardtoachievew
5、iththepresenceof0BI.TheOFDMA-PONsystemstructurewasstudiedandtherelatedformulaswerederivedtoanalyzethegenerationandavoidanceof0BI。TheOBIavoidanceschemethatsendingopticalcarrierusedinupstreambydownstreamtransmissioncombinedwithcoherentdetectioninopticallineterminalwassi
6、mulated.Viasimulation,theanti—dispersionschemeandtheeffectsofdispersionaccumulationandthelengthoftrainingsequenceonsystemperformancewerestudied,andtheparameterconfigurationwasoptimizedtoprovideatheoryreferenceforpracticalapplication.Keywords:Opticalcommunication;Passi
7、veOpticalNetwork;OrthogonalDivisionMultipleAccessP0N;OpticalBeatingInterference;PhysicallayerimpairmentsoCISCodes:060.2330;060.2360;060.4510;070.6020networkutilization,OrthogonalFrequencyDivision0IntroductionMultipleAccessPassiveOpticalNetwork(OFDMA—Asaprimarycandidat
8、efornextgenerationaccessP0N)hascausedawideattentionsofresearchersinFoundationitem:NationalNaturalScienceFoundationofChina(No
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