WIMAX信道解碼系統(tǒng)的設(shè)計與實現(xiàn)
發(fā)布時間：2018-09-06 19:16
【摘要】：WIMAX(Worldwide Interoperability for Microwave Access),是一種為企業(yè)和家庭用戶提供的寬帶無線連接方案,被稱為全球微波互聯(lián)或802.16e無線城域網(wǎng),它是組成未來通信技術(shù)重要部分。WIMAX可以提供更遠(yuǎn)的傳輸距離,更高的寬帶接入,更優(yōu)良的接入服務(wù)和更多的多媒體通訊服務(wù),兼具了移動寬帶和IP化的特點。目前,WIMAX技術(shù)已經(jīng)使用在各行各業(yè),不斷改變著人們的生活方法,未來隨著移動寬帶應(yīng)用的迅猛發(fā)展,WIMAX將會迎來更廣闊的發(fā)展空間。因此通過研究典型的WIMAX編解碼特點和協(xié)議特征,提出一種實用的典型WIMAX信道解碼系統(tǒng)方案,解決WIMAX的日常應(yīng)用十分有必要。本文是針對WIMAX未來的廣泛應(yīng)用前景,詳細(xì)的分析了WIMAX系統(tǒng)的編碼特點、協(xié)議特征、安全機制,以及一些系統(tǒng)設(shè)計問題。闡述了其核心OFDMA技術(shù)標(biāo)準(zhǔn)和結(jié)構(gòu)特點。通過分析WIMAX網(wǎng)絡(luò)層、物理層、接入控制層、認(rèn)證機制等協(xié)議體系和設(shè)計的了信號解調(diào)流程,具體對FEC、卷積碼、Turbo碼和擾碼的編解碼特點進行了深入的研究,設(shè)計了一種典型的信道解碼方法。為了驗證設(shè)計思路的有效性,同時開展對原理樣機的研制。分別完成了系統(tǒng)方案設(shè)計、射頻方案設(shè)計、基帶處理板卡方案設(shè)計、嵌入式控制板卡的選型和軟件方案的設(shè)計。射頻模塊主要完成模數(shù)/數(shù)模轉(zhuǎn)換,以及天線射頻的發(fā)送接收;基帶處理辦卡主要通過FPGA和DSP硬件實現(xiàn)編解碼、調(diào)制解調(diào)等工作;嵌入式控制板卡實現(xiàn)802.16協(xié)議棧,控制外圍接口、并與基帶處理板卡進行信息交互;上層人機交互界面的實現(xiàn)顯控功能。通過軟硬件實現(xiàn)和集成,最后研制了一套原理樣機,并通過試驗驗證,證明了設(shè)計思路的可行性。
[Abstract]:WIMAX (Worldwide Interoperability for Microwave Access), is a broadband wireless connection scheme for enterprises and home users. It is called global microwave interconnection or 802.16e wireless metropolitan area network. It is an important part of future communication technology. WIMAX can provide further transmission distance. Higher broadband access, better access services and more multimedia communication services, both mobile broadband and IP features. At present, WIMAX technology has been used in various industries, constantly changing people's living methods. With the rapid development of mobile broadband applications in the future, WIMAX will ushered in a broader development space. Therefore, by studying the typical WIMAX codec characteristics and protocol features, a practical scheme of typical WIMAX channel decoding system is proposed, which is very necessary to solve the daily application of WIMAX. Aiming at the prospect of WIMAX application in the future, this paper analyzes in detail the coding characteristics, protocol features, security mechanism and some system design problems of WIMAX system. The technical standard and structure characteristics of its core OFDMA are described. By analyzing the protocol system of WIMAX network layer, physical layer, access control layer, authentication mechanism and so on, the signal demodulation flow is designed, and the coding and decoding characteristics of FEC, convolutional code and scrambling code are studied in detail. A typical channel decoding method is designed. In order to verify the validity of the design idea, a prototype of the principle was developed at the same time. The system scheme design, radio frequency scheme design, baseband processing card scheme design, embedded control board card selection and software design are completed respectively. RF module mainly completes A / D conversion and antenna RF transmission and reception; Baseband processing card mainly through FPGA and DSP hardware to achieve coding and decoding, modulation and demodulation; embedded control board to achieve 802.16 protocol stack, The peripheral interface is controlled and the information is exchanged with the baseband processing board, and the display and control function of the upper man-machine interface is realized. Finally, a set of principle prototype is developed through the realization and integration of software and hardware, and the feasibility of the design idea is proved by the experiment.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN925.93
本文編號：2227280
[Abstract]:WIMAX (Worldwide Interoperability for Microwave Access), is a broadband wireless connection scheme for enterprises and home users. It is called global microwave interconnection or 802.16e wireless metropolitan area network. It is an important part of future communication technology. WIMAX can provide further transmission distance. Higher broadband access, better access services and more multimedia communication services, both mobile broadband and IP features. At present, WIMAX technology has been used in various industries, constantly changing people's living methods. With the rapid development of mobile broadband applications in the future, WIMAX will ushered in a broader development space. Therefore, by studying the typical WIMAX codec characteristics and protocol features, a practical scheme of typical WIMAX channel decoding system is proposed, which is very necessary to solve the daily application of WIMAX. Aiming at the prospect of WIMAX application in the future, this paper analyzes in detail the coding characteristics, protocol features, security mechanism and some system design problems of WIMAX system. The technical standard and structure characteristics of its core OFDMA are described. By analyzing the protocol system of WIMAX network layer, physical layer, access control layer, authentication mechanism and so on, the signal demodulation flow is designed, and the coding and decoding characteristics of FEC, convolutional code and scrambling code are studied in detail. A typical channel decoding method is designed. In order to verify the validity of the design idea, a prototype of the principle was developed at the same time. The system scheme design, radio frequency scheme design, baseband processing card scheme design, embedded control board card selection and software design are completed respectively. RF module mainly completes A / D conversion and antenna RF transmission and reception; Baseband processing card mainly through FPGA and DSP hardware to achieve coding and decoding, modulation and demodulation; embedded control board to achieve 802.16 protocol stack, The peripheral interface is controlled and the information is exchanged with the baseband processing board, and the display and control function of the upper man-machine interface is realized. Finally, a set of principle prototype is developed through the realization and integration of software and hardware, and the feasibility of the design idea is proved by the experiment.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN925.93
【參考文獻】
相關(guān)碩士學(xué)位論文 前1條
1 銀慶宏;一種自適應(yīng)Viterbi譯碼算法的研究與實現(xiàn)[D];國防科學(xué)技術(shù)大學(xué);2010年
，本文編號：2227280
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