本文選題：軟件無(wú)線電　切入點(diǎn)：GNURadio　出處：《北京郵電大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：最近三十多年來(lái),無(wú)線移動(dòng)通信領(lǐng)域發(fā)展迅速。軟件無(wú)線電自1992年由于軍事通信需要被提出以來(lái),從理論發(fā)展到了實(shí)際平臺(tái)。簡(jiǎn)單地說(shuō),軟件無(wú)線電就是指在硬件平臺(tái)上,采用軟件編程來(lái)實(shí)現(xiàn)通信的一種新的無(wú)線電技術(shù)。目前使用最廣泛的軟件無(wú)線電平臺(tái)是GNURadio和USRP的組合口 正交頻分復(fù)用OFDM是一種特殊的多載波調(diào)制方式。OFDM的優(yōu)點(diǎn)是可以有效的對(duì)抗符號(hào)間干擾,頻譜效率很高。缺點(diǎn)是對(duì)定時(shí)和頻率偏移敏感,峰均比較大。現(xiàn)在OFDM已經(jīng)是4G標(biāo)準(zhǔn)的核心技術(shù),在移動(dòng)通信系統(tǒng)的應(yīng)用勢(shì)在必行。 本文研究平臺(tái)是GNURadio和USRP平臺(tái),研究對(duì)象是OFDM系統(tǒng)。通過(guò)分析軟件無(wú)線電平臺(tái)的結(jié)構(gòu)和OFDM的基本原理,實(shí)現(xiàn)了在GNURadio和USRP平臺(tái)上實(shí)現(xiàn)OFDM收發(fā)系統(tǒng),并對(duì)實(shí)際測(cè)量結(jié)果進(jìn)行分析。進(jìn)行數(shù)據(jù)包發(fā)送接收測(cè)量時(shí),通過(guò)添加信道編碼模塊提高了系統(tǒng)的可靠性；在平臺(tái)上實(shí)現(xiàn)了能量檢測(cè)算法,測(cè)量頻譜占用情況；最后使用m序列相關(guān)法,通過(guò)發(fā)送m序列與接收信號(hào)做相關(guān)運(yùn)算,測(cè)量出室內(nèi)的信道響應(yīng)。
[Abstract]:In recent 30 years, the field of wireless mobile communication has developed rapidly. Software radio has been developed from theory to practical platform since 1992 because of the need of military communication. A new radio technology for communication using software programming. The most widely used software radio platform is the combined port of GNURadio and USRP. Orthogonal Frequency Division Multiplexing (OFDM) is a special multicarrier modulation method. The advantage of OFDM is that it can effectively resist inter-symbol interference, and the spectrum efficiency is very high, but the disadvantage is that it is sensitive to timing and frequency offset. Now OFDM is the core technology of 4G standard, so it is imperative to apply it in mobile communication system. The research platform of this paper is GNURadio and USRP, and the research object is OFDM system. By analyzing the structure of software radio platform and the basic principle of OFDM, the OFDM transceiver system is realized on GNURadio and USRP platform. The reliability of the system is improved by adding the channel coding module, and the energy detection algorithm is implemented on the platform to measure the spectrum occupation. Finally, the channel response is measured by using m sequence correlation method and correlation operation between m sequence and received signal.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN929.53

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 張宇;馮春燕;郭彩麗;;基于可變間隔的認(rèn)知無(wú)線電頻譜檢測(cè)機(jī)制[J];北京郵電大學(xué)學(xué)報(bào);2008年02期

2 林婧;王宏;方煒;余鐘源;劉元安;;軟件無(wú)線電的研究現(xiàn)狀綜述[J];計(jì)算機(jī)測(cè)量與控制;2011年10期

相關(guān)博士學(xué)位論文 前1條

1 楊春花;運(yùn)用m序列測(cè)量房間脈沖響應(yīng)的技術(shù)研究[D];天津大學(xué);2007年

，

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