本文選題：衛(wèi)星重疊通信　切入點(diǎn)：RS編譯碼　出處：《西安電子科技大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：由于衛(wèi)星通信具有覆蓋范圍廣、通信容量大、傳輸距離遠(yuǎn)等特點(diǎn),其在現(xiàn)代無(wú)線(xiàn)通信中有著良好的應(yīng)用前景。重疊通信因其能夠利用已有背景系統(tǒng)進(jìn)行通信而越來(lái)越受到國(guó)內(nèi)外研究者的重視。本文采用RS編譯碼算法和直接序列擴(kuò)頻技術(shù)設(shè)計(jì)了一個(gè)基于衛(wèi)星重疊通信的應(yīng)急救援通信系統(tǒng),并對(duì)其關(guān)鍵技術(shù)進(jìn)行研究和硬件實(shí)現(xiàn)。主要工作如下:1.通過(guò)調(diào)研結(jié)果,本文指出了當(dāng)前應(yīng)急救援通信系統(tǒng)中存在的不足,提出了一種基于衛(wèi)星重疊通信的應(yīng)急救援通信系統(tǒng)方案。2.介紹了衛(wèi)星重疊通信的基本原理,分析了設(shè)計(jì)系統(tǒng)的應(yīng)用背景環(huán)境和需求,并選擇GEO衛(wèi)星作為背景系統(tǒng)通信衛(wèi)星。3.根據(jù)重疊通信基本要求和衛(wèi)星鏈路預(yù)算的結(jié)果,論證了所設(shè)計(jì)系統(tǒng)的可行性。利用上述結(jié)果,確定了該系統(tǒng)發(fā)射機(jī)和接收機(jī)的結(jié)構(gòu)功能,著重對(duì)該系統(tǒng)的同步方案進(jìn)行了仿真論證。4.研究了RS碼的編譯碼算法原理,分析了其糾錯(cuò)能力。通過(guò)QuartusII軟件實(shí)現(xiàn)了RS編譯碼硬件仿真,并將其輸出結(jié)果與軟件編碼結(jié)果進(jìn)行比較,驗(yàn)證了硬件實(shí)現(xiàn)的正確性。此外,研究了直接序列擴(kuò)頻技術(shù)的基本原理及相關(guān)內(nèi)容,并完成其FPGA設(shè)計(jì)。
[Abstract]:Because satellite communication has the characteristics of wide coverage, large communication capacity, long transmission distance, etc. It has a good application prospect in modern wireless communication. Overlapped communication is paid more and more attention by researchers at home and abroad for its ability to communicate with existing background systems. In this paper, RS encoding and decoding algorithms and direct sequences are used. The spread spectrum technology has designed an emergency rescue communication system based on satellite overlapping communication. The main work is as follows: 1.Through the research results, this paper points out the shortcomings of the current emergency rescue communication system. In this paper, a scheme of emergency rescue communication system based on satellite overlapping communication is proposed. The basic principle of satellite overlapping communication is introduced, and the application background and requirements of the design system are analyzed. The GEO satellite is chosen as the communication satellite of the background system .3.According to the basic requirements of the overlapping communication and the results of the satellite link budget, the feasibility of the designed system is demonstrated. The structural functions of the transmitter and receiver of the system are determined by using the above results. The synchronization scheme of the system is simulated and demonstrated. 4. The principle of RS coding and decoding algorithm is studied, and its error correction ability is analyzed. The hardware simulation of RS coding and decoding is realized by QuartusII software. The output results are compared with the results of software coding to verify the correctness of the hardware implementation. In addition, the basic principle and related contents of direct sequence spread spectrum technology are studied, and its FPGA design is completed.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN927.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 李志國(guó);衛(wèi)穎;;衛(wèi)星通信鏈路計(jì)算[J];指揮信息系統(tǒng)與技術(shù);2014年01期

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本文編號(hào)：1568301