【摘要】：TD-SCDMA是由我國首次提出的第三代移動(dòng)通信標(biāo)準(zhǔn)，在物理層核心技術(shù)上具有自主知識(shí)產(chǎn)權(quán)。TD-SCDMA作為一種新技術(shù)標(biāo)準(zhǔn)，相比WCDMA和cdma2000其技術(shù)的成熟性和商用經(jīng)驗(yàn)還不是很成熟，因此需要大量的測(cè)試工作來保證其商用的順利進(jìn)行，在整個(gè)測(cè)試過程中終端射頻參數(shù)的測(cè)試是非常重要的環(huán)節(jié)。需要測(cè)試的終端射頻參數(shù)包括：通道功率、占用帶寬、鄰道功率泄漏比、誤差矢量幅度、碼域功率、峰值碼域誤差、星座圖、眼圖和比特表等。目前國內(nèi)外提供TD-SCDMA測(cè)試解決方案的公司有安捷倫、泰克、中電41所等，但國內(nèi)大多是專用的綜測(cè)儀，，支持對(duì)其測(cè)量功能的頻譜分析儀較少。 本文在教研室現(xiàn)有的PXI實(shí)時(shí)頻譜分析模塊硬件平臺(tái)的基礎(chǔ)上采用軟件編程的方式對(duì)中頻處理后的基帶IQ數(shù)據(jù)進(jìn)行處理，得出誤差矢量幅度、碼域功率、峰值碼域誤差和比特表等重要參數(shù)的測(cè)量方法，給出C語言編寫參數(shù)計(jì)算函數(shù)接口。在對(duì)這些參數(shù)進(jìn)行測(cè)量過程中需要用到待測(cè)信號(hào)和理想?yún)⒖夹盘?hào)，而理想?yún)⒖夹盘?hào)的恢復(fù)過程則是測(cè)量過程中的難點(diǎn)所在，本文對(duì)物理層信號(hào)處理過程研究后得出理想?yún)⒖夹盘?hào)的恢復(fù)過程，這也是文章的創(chuàng)新之處。本文主要工作如下： （1）首先研究物理層的核心技術(shù)傳輸信道編碼復(fù)用和解碼解復(fù)用技術(shù)。討論了各模塊的具體實(shí)現(xiàn)算法，然后建立了整個(gè)系統(tǒng)編碼復(fù)用以及解碼解復(fù)用過程仿真模型。模型中各模塊算法用C語言S函數(shù)實(shí)現(xiàn)，最后給出誤碼率等仿真結(jié)果，驗(yàn)證了算法的正確性。 （2）數(shù)據(jù)流經(jīng)過編碼復(fù)用后進(jìn)行調(diào)制、擴(kuò)頻和加擾以及插入訓(xùn)練序列碼和脈沖成形處理，經(jīng)頻譜搬移后在無線信道中傳輸。本文對(duì)擴(kuò)頻調(diào)制環(huán)節(jié)進(jìn)行分析，討論了擴(kuò)頻調(diào)制環(huán)節(jié)各模塊的算法，然后給出了仿真模型，產(chǎn)生TD-SCDMA信號(hào)。 （3）得出了一種由待測(cè)信號(hào)恢復(fù)理想?yún)⒖夹盘?hào)的方法，并由待測(cè)信號(hào)和參考信號(hào)給出誤差矢量幅度、碼域功率、峰值碼域誤差和比特表等重要參數(shù)測(cè)量方法，用C語言編程實(shí)現(xiàn)各參數(shù)計(jì)算的函數(shù)接口，并對(duì)參數(shù)的測(cè)量算法進(jìn)行了仿真驗(yàn)證，最后將EVM的算法接口嵌入到上層軟件中，對(duì)其進(jìn)行測(cè)試并和泰克頻譜分析儀測(cè)試結(jié)果進(jìn)行對(duì)比驗(yàn)證。
[Abstract]:TD-SCDMA is the third generation mobile communication standard proposed by our country for the first time, and it has independent intellectual property rights in the core technology of physical layer. As a new technology standard, TD-SCDMA is not very mature compared with WCDMA and cdma2000 in terms of maturity and commercial experience. Therefore, a great deal of testing work is needed to ensure the commercial running smoothly, and the testing of terminal RF parameters is very important in the whole testing process. The terminal RF parameters that need to be tested include: Channel power, bandwidth occupancy, adjacent channel power leakage ratio, error vector amplitude, code domain power, peak code domain error, constellation diagram, eye diagram and bit table, etc. At present, the companies providing TD-SCDMA testing solutions at home and abroad are Agilent, Tecker, CLP 41, etc., but most of them are special integrated instruments in China, and there are few spectrum analyzers supporting their measurement functions. On the basis of the existing hardware platform of PXI real-time spectrum analysis module in the teaching and research office, this paper uses software programming to process the baseband IQ data after intermediate frequency processing, and obtains the error vector amplitude and the power of the code domain. The method of measuring the important parameters such as peak code error and bit table is given, and the function interface of parameter calculation in C language is given. It is necessary to use the signal to be measured and the ideal reference signal to be used in the process of measuring these parameters, and the recovery process of the ideal reference signal is the difficult point in the measurement process. This paper studies the physical layer signal processing process and obtains the ideal reference signal recovery process, which is also the innovation of the paper. The main work of this paper is as follows: (1) the core technology of physical layer, transmission channel coding multiplexing and decode demultiplexing, is studied firstly. The implementation algorithms of each module are discussed, and then the simulation models of code multiplexing and decode demultiplexing process of the whole system are established. The algorithm of each module in the model is implemented by S function in C language. Finally, the simulation results such as bit error rate (BER) are given, and the correctness of the algorithm is verified. (2) the data stream is modulated, spread spectrum and scrambled, inserted training sequence code and pulse shaping after code multiplexing, and transmitted in wireless channel after spectrum shift. In this paper, the spread spectrum modulation link is analyzed, the algorithm of each module in the spread spectrum modulation link is discussed, and then the simulation model is given to generate the TD-SCDMA signal. (3) A method of recovering the ideal reference signal from the signal to be tested is presented. The error vector amplitude, the power of the code domain, the error of the peak code domain and the bit table are given by the signal to be measured and the reference signal. The function interface of each parameter calculation is realized by programming in C language, and the parameter measurement algorithm is simulated and verified. Finally, the algorithm interface of EVM is embedded in the upper software. The test results are compared with those of Tecker spectrum analyzer.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TN929.53

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 章堅(jiān)武;張磊;姚英彪;崔璐璐;;TD-SCDMA信號(hào)的實(shí)時(shí)捕獲及分析[J];電氣電子教學(xué)學(xué)報(bào);2012年01期

2 頊文勝;WCA-230A無線通信測(cè)試儀在TD-SCDMA調(diào)測(cè)中的典型應(yīng)用[J];國外電子測(cè)量技術(shù);2003年06期

3 張楠;秦開宇;;基于Visual C++的實(shí)時(shí)頻譜分析軟件設(shè)計(jì)[J];測(cè)控技術(shù);2008年01期

4 劉梅;楊家瑋;趙雪亮;;TD-SCDMA空中接口調(diào)制解調(diào)的研究實(shí)現(xiàn)與仿真[J];通信技術(shù);2007年12期

5 ;Agilent TD-SCDMA測(cè)量解決方案[J];中國新通信;2007年09期

6 張平,徐國鑫;中國自主開發(fā)的3G標(biāo)準(zhǔn)TD-SCDMA發(fā)展現(xiàn)狀分析[J];移動(dòng)通信;2004年05期

7 程德杰;;TD-SCDMA演進(jìn)與國內(nèi)TD產(chǎn)業(yè)發(fā)展形勢(shì)分析[J];移動(dòng)通信;2009年01期

相關(guān)博士學(xué)位論文 前1條

1 閻嘯;寬帶多制式無線通信信號(hào)解調(diào)測(cè)試算法研究[D];電子科技大學(xué);2010年

相關(guān)碩士學(xué)位論文 前10條

1 周蕓;TD-SCDMA系統(tǒng)中傳輸信道編碼與復(fù)用的研究與實(shí)現(xiàn)[D];大連海事大學(xué);2006年

2 龍毅;TD-SCDMA物理層仿真及Turbo編解碼研究[D];華南理工大學(xué);2003年

3 王海濱;基于軟件編程的TD-SCDMA矢量信號(hào)源[D];東南大學(xué);2006年

4 孫靜靜;基于TD-SCDMA基帶信號(hào)發(fā)生器的研究與實(shí)現(xiàn)[D];西安電子科技大學(xué);2007年

5 李昊;基于虛擬儀器的TD-SCDMA終端測(cè)試技術(shù)研究[D];武漢理工大學(xué);2007年

6 王冰;TD-SCDMA終端射頻一致性測(cè)試?yán)碚撆c研究[D];北京郵電大學(xué);2007年

7 張?jiān)?TD-SCDMA終端測(cè)試儀射頻一致性測(cè)試的設(shè)計(jì)與實(shí)現(xiàn)[D];北京郵電大學(xué);2007年

8 張燕;TD-SCDMA上行鏈路傳輸信道編碼復(fù)用仿真與基站端解碼解復(fù)用的實(shí)現(xiàn)[D];電子科技大學(xué);2008年

9 李江鋒;TD-SCDMA終端射頻自動(dòng)測(cè)試系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)[D];北京郵電大學(xué);2008年

10 康鋒;TD-SCDMA上行鏈路傳輸信道編碼復(fù)用以及解碼解復(fù)用的研究和實(shí)現(xiàn)[D];電子科技大學(xué);2009年

本文編號(hào)：2432169