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1、目錄摘要………………………………………………………………………………………1Abstract……………………………………………………………………………………11引言……………………………………………………………………………………12OFDM系統(tǒng)介紹………………………………………………………………………32.1OFDM系統(tǒng)的基本原理…………………………………………………………32.2OFDM系統(tǒng)的基本模型……………………………………………………………52.3OFDM技術(shù)的應(yīng)用領(lǐng)域…………………………………………………
2、…………62.4OFDM技術(shù)的優(yōu)缺點(diǎn)………………………………………………………………73OFDM關(guān)鍵技術(shù)…………………………………………………………………………93.1時(shí)域和頻域同步……………………………………………………………………93.2信道估計(jì)技術(shù)………………………………………………………………………93.3信道編碼和交織…………………………………………………………………123.4降低均峰功率比…………………………………………………………………123.5均衡……………………………………………………………………
3、…………124基于Simulink的OFDM通信系統(tǒng)仿真及分析………………………………………124.1MATLAB/Simulink概述……………………………………………………………124.2OFDM通信系統(tǒng)實(shí)現(xiàn)……………………………………………………………134.3仿真結(jié)果分析……………………………………………………………………14結(jié)束語……………………………………………………………………………………17參考文獻(xiàn)…………………………………………………………………………………1718OFDM傳輸技術(shù)研究學(xué)生姓名:楊
4、京學(xué)號(hào):20095044048學(xué)院:物理電子工程學(xué)院專業(yè):電子科學(xué)與技術(shù)指導(dǎo)教師:孫秋菊職稱:講師摘要:正交頻分復(fù)用(OrthogonalFrequencyDivisionMultiplexing,OFDM)是一種高效的多載波寬帶數(shù)字調(diào)制技術(shù),是第四代移動(dòng)通信技術(shù)的核心技術(shù)。由于其克服多徑干擾、消除符號(hào)間干擾的能力強(qiáng)和頻譜利用率高的優(yōu)點(diǎn),應(yīng)用越來越廣泛。本文首先概括性地介紹正交頻分復(fù)用技術(shù)的發(fā)展史,然后重點(diǎn)研究了OFDM通信系統(tǒng)的基本原理并綜合分析OFDM的優(yōu)缺點(diǎn),最后討論了基于Simulink的OFDM通信系統(tǒng)的
5、仿真及分析。本文的討論與結(jié)論對(duì)準(zhǔn)確理解和熟練應(yīng)用OFDM傳輸技術(shù)有一定參考作用。關(guān)鍵詞:正交頻分復(fù)用;通信系統(tǒng);仿真TheResearchofOFDMTransmissionTechnologyAbstract:OFDM(OrthogonalFrequencyDivisionMultiplexing,OFDM)isanefficientmulti-carrierbroadbanddigitalmodulationtechnology,whichisthecoretechniquesofthefourthgenera
6、tiontechnology.Foritsadvantagesofgoodresistanceofthefrequeneyselectivedecliningorclippinginterference,highspectrunefficiency,OFDMisappliedmoreandmoreextensively.Firstly,thedevelopmenthistoryofOFDMtechnologyisintroducedgenerallyinthistext.Secondly,thebasicprinc
7、ipleandthekeytechnologyofOFDMcommunicationsystemarestudiedessentiallyaswellasitsadvantagesanddisadvantages.Finally,thesimulationandanalysisofOFDMcommunicationsystemarediscussed.Thediscussionandconclusionofaccurateunderstandingandskilledapplicationhavecertainre
8、ferencefunctiononOFDMtransmissiontechnology.Keywords:OrthogonalFrequencyDivisionMultiplexing;CommunicationSystem;Simulation1引言O(shè)FDM的英文全稱為OrthogonalFrequency-DivisionMultiplexing,中文含