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《畢業(yè)設(shè)計(jì)(論文)-現(xiàn)代移動(dòng)通信中的調(diào)制技術(shù)研究》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、現(xiàn)代移動(dòng)通信中的調(diào)制技術(shù)研究Modulationofmodernmobilecommunicationtechnology劉新樂(Liuxinle)062504331計(jì)算機(jī)與通信學(xué)院本科生畢業(yè)論文現(xiàn)代移動(dòng)通信中的調(diào)制技術(shù)研究作者:劉新樂學(xué)號(hào):06250433專業(yè):通信工程班級(jí):通信4班指導(dǎo)教師:王維芳答辯時(shí)間:2摘要調(diào)制技術(shù)是任何頻帶通信中最重要的一項(xiàng)技術(shù)?,F(xiàn)代移動(dòng)通信系統(tǒng)都使用數(shù)字調(diào)制技術(shù),數(shù)字調(diào)制技術(shù)的改進(jìn)也是通信系統(tǒng)性能提高的重要途徑。本文首先研究了幾種基本的數(shù)字調(diào)制方式和廣泛應(yīng)用在現(xiàn)代移動(dòng)通信中的新型數(shù)字調(diào)制技術(shù)。然后,運(yùn)用仿真軟件MATLAB對(duì)
2、其進(jìn)行編程仿真,通過仿真圖形觀察了調(diào)制解調(diào)過程中各環(huán)節(jié)的時(shí)域波形,并結(jié)合數(shù)字調(diào)制技術(shù)的調(diào)制原理,跟蹤分析了各個(gè)環(huán)節(jié)對(duì)調(diào)制性能的影響及仿真模型的可靠性。最后,在仿真的基礎(chǔ)上分析比較了各種調(diào)制技術(shù)的性能。關(guān)鍵詞:移動(dòng)通信;數(shù)字調(diào)制;分析與仿真;MATLAB3AbstractModulationofanyfrequencybandcommunicationsisthemostimportanttechnology.Modernmobilecommunicationsystemsusedigitalmodulation,usingdigitalmodulatio
3、ntechniquestoimprovecommunicationsystemperformanceisalsoanimportantwaytoimprove.Thispaperstudiesseveralbasicdigitalmodulationmethodsandwhichwidelyusedinmodernmobilecommunicationinthenewdigitalmodulationtechniques.Then,usingsimulationsoftwareMATLABbeprogrammedsimulationtoobserveth
4、emodulationanddemodulationprocessofdrawingeachpartofthetimedomainwaveforms,andmodulationcombinedwithdigitalmodulationprinciple,trackandanalyzetheperformanceofeachpartoftheimpactonthemodulationandsimulationreliabilityofthemodel.Finally,analysisingandcomparingtheperformanceofvariou
5、smodulationtechniquesbasedonthesimulation.Keywords:mobilecommunications;digitalmodulation;analysisandsimulation;MATLAB4目錄第1章緒論...............................................................................................................................71.1移動(dòng)通信技術(shù)概述...............
6、.....................................................................................71.2調(diào)制技術(shù)....................................................................................................................71.2.1調(diào)制技術(shù)的概念..........................................................
7、..................................71.2.2調(diào)制技術(shù)的分類............................................................................................71.3數(shù)字調(diào)制的意義........................................................................................................81.4MATLAB在通信系統(tǒng)仿真中的應(yīng)用.....
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