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1、第Ⅰ页 802.11p车载无线通信链路仿真设计摘要本文详细说明了当今车载无线通信现状,技术难点和发展趋势。并介绍了车载无线通信的基本知识及概念。对IEEE802.11p通信协议物理链路层做了简单介绍,详细分析了对于这种高速移动信道的相适应的数据帧结构。由于OFDM(OrthogonalFrequencyDivisionMultiplexing),MIMO(Multiple-InputMultiple-Output)技术作为下一代移动通信的候
2、选技术已被广泛应用,同时也是快速车载无线通信的关键技术。本文就基于OFDM,MIMO等先进通信技术,搭建了完整的仿真平台,实现了数据发射,传输,接收的完整通信过程的设计及仿真。本文基于802.11p协议的物理层规范,研究了在高斯信道和指数衰落信道下(2,1,7)卷积编码,序列打孔,维特比译码,交织编码,分集技术,空时编码,信道估计,帧同步,符号定时、频偏估计和载波相位跟踪等技术,对信道误码率.误组率的影响。将不同的序列打孔模式,交织,及同步复杂度进行了比较,对通信的有效性,可靠性这对矛盾体的进行了很好
3、地说明。有一定实际论证价值。此外,本文还对有一定实际意义的任意卷积码生成及其截断型维特比译码算法进行仿真设计。实现了在可容忍误码率范围内,对内存的可观节省。关键词:IEEE802.11p;卷积码;交织;截断维特比译码;信道估计;同步 第Ⅰ页 SimulationdesignofvehiclewirelesscommunicationlinkAbstractThispapergiveadetaileddescriptionoft
4、hepresentsituation,technicaldifficultiesandthedevelopmenttrendoftoday'sin-vehiclewirelesscommunication.Andintroducethebasicknowledgeandconceptsin-vehiclewirelesscommunication.MakeasimpleintroductionofCommunicationprotocolofthephysicallinklayerofIEEE802.
5、11p,analysisthedataframestructurefitinthisfast-movingchannelindetailed.AsthetechnologyofOFDM(OrthogonalFrequencyDivisionMultiplexing)&MIMO(Multiple-InputMultiple-Output)hasbeenwidelyappliedasacandidatefornextgenerationmobilecommunicationstechnology,atth
6、esametime,itisalsokeytoquick-vehiclewirelesscommunicationtechnology.SobasedonOFDM&MIMO&otheradvancedcommunicationtechnology,thisarticlebuildacompletesimulationplatform,enablesdatatransmission,transfer,receive—afullprocesscommunicationdesignandsimulation
7、.Basedon802.11pProtocolphysicallayerspecification,thispaperstudyonConvolutionalcodes,sequencedrilling,Viterbidecoding,interleavedcoded,diversity,space-timecoding,channelestimation,framesynchronization,symboltimingandfrequencyoffsetestimationandcarrier-p
8、hasetrackingtechniqueunderGaussianchannel&indexoffadingchannel.Differentsequencesofdrillingmodes,interleaved,andsimultaneouscomplexityarecompared.Thismakeaaverygoodillustrationontheeffectivenessandreliabilityofcommunication,thetw