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《OFDM調(diào)制解調(diào)技術(shù)的設(shè)計與仿真實現(xiàn) 通信工程專業(yè)畢業(yè)論文》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學術(shù)論文-天天文庫。
1、畢業(yè)設(shè)計題目：OFDM調(diào)制解調(diào)技術(shù)的設(shè)計與仿真實現(xiàn)姓 名：XXXXXX學 號：信息通信110BXXXXXXXXXXXXX學院：信息學院專業(yè)：同組人：指導教師：XXXXXX協(xié)助指導教師：2015年5月7日43摘要正交頻分復用（OrthogonalFrequencyDivisionMultiplexing，OFDM）技術(shù)因其在時域上抵抗多徑衰落、頻域上抵抗選擇性，簡化接收機的信道均衡操作；抗窄帶干擾性強，對抗波形間相互干擾效果明顯，適合傳輸速率高的數(shù)據(jù)傳輸；頻譜效率高等突出優(yōu)點，在高速通信領(lǐng)域取得廣泛應用。作為4G網(wǎng)絡(luò)的三大關(guān)鍵技術(shù)之一，人們對OFDM技術(shù)的研究日漸深入。OFDM技術(shù)也因其時域同步
2、要求高、同頻干擾大、信號峰均比（PARR）高等缺點，在實際應用當中受到諸多限制。首先，本文概述了OFDM技術(shù)的起源、發(fā)展與使用現(xiàn)狀，并且簡略概述了OFDM技術(shù)的主要優(yōu)缺點，以及OFDM調(diào)制解調(diào)系統(tǒng)工作原理和主要技術(shù)，設(shè)計并構(gòu)建基于快速傅里葉變換和反變換的OFDM調(diào)制解調(diào)系統(tǒng)模塊。簡述MATLAB軟件平臺的基本原理與應用，并基于MATLAB軟件平臺設(shè)計并實現(xiàn)OFDM調(diào)制解調(diào)系統(tǒng)的仿真，觀察仿真結(jié)果，分析系統(tǒng)性能，找出仿真過程中OFDM系統(tǒng)所出現(xiàn)的問題或缺陷，思考并提出解決該問題或缺陷的有效方法。關(guān)鍵詞：OFDM調(diào)制解調(diào)仿真MATLAB43AbstractOrthogonalFrequencyDi
3、visionMultiplexing(OFDM)technologybecauseofresistanceonthemulti-pathfadingintimedomainandresistingselectivityinthefrequencydomain,Simplifyreceiverchannelequalizationoperation;Narrowbandinterferenceisstrong,alotofdatacanbeissuedundernarrowbandwidth;Itcanbeeffectiveagainsttheinterferencebetweenthesign
4、alwaveform,forhigh-speeddatatransmissionandmulti-pathfadingchannelenvironment;highchannelutilizationandsoon.Itiswidelyusedinhigh-speedcommunications.Asoneofthethreecoretechnologiesofthefourthgenerationmobilecommunicationnetwork,peopleresearchOFDMtechnologyincreasingdepth.OFDMtechnologysubjecttomanyl
5、imitationsinthepracticalapplication,becauseofsomeshortcomings,suchashighrequirementofthetimedomainsynchronization,greatfrequencyinterferenceandhighsignalpeaktoaverageratio.Therefore,thisarticlebrieflydescribesthehistoryanddevelopmentstatusofOFDMtechnology,analyzesthemainadvantagesanddisadvantagesofO
6、FDMtechnology,outlinesthebasicprinciplesandkeytechnologiesofOFDMmodulationanddemodulationsystem.DesigningandconstructingOFDMmodulationanddemodulationsystemmodelbasedonFFT/IFFT.DescribefundamentalsandapplicationsofMATLABsoftwareplatform,AndbasedonMATLABsoftwareplatformtodesignandimplementOFDMmodulati
7、onanddemodulationsystemsimulation,observethesimulationresults,analyzesystemperformance,toidentifythesimulationprocessOFDMsystemproblemsordefects.consideringandproposingeffectivemethodstosolutetheprobl
