寬帶接收機(jī)非線性補(bǔ)償技術(shù)的研究
[Abstract]:With the rapid development of the communication industry in the past 30 years, a large number of communication devices have emerged. As an indispensable link in the communication system, transmitters and receivers support the continuous innovation of modern communication technology. But the nonlinear characteristics of transmitter and receiver will greatly reduce the communication quality and efficiency of the whole system. The multi-carrier modulation technology often used in transmitter, such as QPSK,QAM,OFDM, will produce a higher peak-to-average ratio (PAPR) than (PAPR), which makes the power amplifier in the transmitter work below the saturation point, and the nonlinear distortion is serious. The receiver front end consists of amplifiers, ADC, mixers and so on. The nonlinear characteristics of the receiver will bring serious nonlinear distortion to the signal and affect the correct reception of the signal. Therefore, a high requirement for linearization technology is put forward. Based on the nonlinear system model and adaptive algorithm, this paper mainly focuses on the digital receiver terminal nonlinear compensation technology, the main work is as follows: 1. The existing linearization technology at home and abroad is classified, and the corresponding introduction for each technology is given. 2. The basic theory of nonlinear system is summarized. Taking the amplifier as an example, the nonlinear characteristics, intermodulation distortion and memory effect are analyzed, and the memoryless nonlinear model and memory nonlinear model are given, and the common memory models are compared. Finally, the index of measuring nonlinear distortion is listed. 3. Considering that the nonlinear distortion component generated by the strong signal may drown the weak signal in the receiver, the receiver can not demodulate the weak signal correctly, so advanced blind recognition and compensation techniques are introduced. At the same time, the parameter updating of nonlinear memory compensation model in adaptive compensation technology and the criterion of blind recognition are analyzed. Finally, the feasibility of the adaptive compensation algorithm is verified by a number of test signals. 4. In the receiver, in addition to the nonlinear distortion of the signal itself, the Intermodulation distortion caused by the interaction between the signals will also affect the reception of the useful signal. The adaptive compensation technique is also used to reconstruct the memoryless polynomial model combined with the deembedding of the linear term, and a nonlinear distortion compensation algorithm is constructed. The power spectrum and constellation diagram before and after the signal compensation are compared, and the EVM values before and after compensation are analyzed under different input power, which shows the effectiveness of the algorithm.
【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】:2014
【分類號(hào)】:TN851
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 祝和云;張玉潤(rùn);;乘除器在非線性補(bǔ)償中的應(yīng)用[J];煉油化工自動(dòng)化;1983年01期
2 陳利學(xué);;牛頓插值定理在非線性補(bǔ)償中的應(yīng)用[J];自動(dòng)化儀表;1990年02期
3 薛金柱;張艷蘭;;傳感器的非線性補(bǔ)償[J];鄭州大學(xué)學(xué)報(bào)(自然科學(xué)版);1997年02期
4 楊放瓊,彭高明;傳感器的非線性補(bǔ)償探討[J];礦業(yè)研究與開發(fā);1999年04期
5 沈平;;中和過程的非線性調(diào)節(jié)方案探討[J];化工自動(dòng)化及儀表;1985年04期
6 田敬民;;集成硅力敏器件的溫度和非線性補(bǔ)償[J];西安理工大學(xué)學(xué)報(bào);1988年01期
7 陸壽茂;;模擬式非線性補(bǔ)償初探[J];遙測(cè)遙控;1992年06期
8 姜波;溫度傳感器非線性補(bǔ)償電路[J];儀表技術(shù)與傳感器;1996年02期
9 張宏琴,姜繼平,何毓敏;測(cè)溫傳感器非線性補(bǔ)償電路的研究[J];大學(xué)物理實(shí)驗(yàn);1998年02期
10 趙嵐,齊德榮;熱電阻測(cè)溫電路非線性補(bǔ)償[J];傳感器技術(shù);2002年05期
相關(guān)會(huì)議論文 前8條
1 李景飛;祁士勇;高海春;;模糊非線性補(bǔ)償在電機(jī)控制中的應(yīng)用[A];增強(qiáng)自主創(chuàng)新能力 促進(jìn)吉林經(jīng)濟(jì)發(fā)展——啟明杯·吉林省第四屆科學(xué)技術(shù)學(xué)術(shù)年會(huì)論文集(上冊(cè))[C];2006年
2 侯媛彬;呂志來;韓崇昭;;一種無級(jí)非線性補(bǔ)償?shù)姆椒╗A];1996年中國(guó)智能自動(dòng)化學(xué)術(shù)會(huì)議論文集(下冊(cè))[C];1996年
3 吳國(guó)鋒;;高速光纖通信非線性補(bǔ)償發(fā)展概述[A];第十八屆十三省市光學(xué)學(xué)術(shù)會(huì)議論文集[C];2010年
4 朱媛媛;;傳感器電橋電路的非線性補(bǔ)償方法[A];江蘇省計(jì)量測(cè)試學(xué)會(huì)2006年論文集[C];2006年
5 王玉田;王威;張海鋒;陳蕾蕾;;基于神經(jīng)網(wǎng)絡(luò)的熱敏電阻非線性補(bǔ)償?shù)难芯縖A];2007年紅外探測(cè)器及其在系統(tǒng)中的應(yīng)用學(xué)術(shù)交流會(huì)論文集[C];2007年
6 崔厚梅;郭西進(jìn);劉淼;;RBF神經(jīng)網(wǎng)絡(luò)在稱重傳感器非線性補(bǔ)償中的應(yīng)用[A];2009全國(guó)虛擬儀器大會(huì)論文集(二)[C];2009年
7 李萍;劉峰;;一種提高無線Mesh網(wǎng)絡(luò)QoS的OFDM非線性補(bǔ)償技術(shù)[A];中國(guó)電子學(xué)會(huì)第十五屆信息論學(xué)術(shù)年會(huì)暨第一屆全國(guó)網(wǎng)絡(luò)編碼學(xué)術(shù)年會(huì)論文集(下冊(cè))[C];2008年
8 王玉田;王威;張海鋒;陳蕾蕾;;基于神經(jīng)網(wǎng)絡(luò)的熱敏電阻非線性補(bǔ)償?shù)难芯縖A];2007'中國(guó)儀器儀表與測(cè)控技術(shù)交流大會(huì)論文集(二)[C];2007年
相關(guān)碩士學(xué)位論文 前6條
1 王會(huì)海;基于神經(jīng)網(wǎng)絡(luò)的傳感器非線性補(bǔ)償技術(shù)及其應(yīng)用[D];中南大學(xué);2004年
2 李璐;寬帶接收機(jī)非線性補(bǔ)償技術(shù)的研究[D];電子科技大學(xué);2014年
3 呂莉;基于ARM的電感位移傳感器非線性補(bǔ)償系統(tǒng)的研究[D];哈爾濱工業(yè)大學(xué);2006年
4 王蕾;CO-OFDM系統(tǒng)中的非線性補(bǔ)償方法研究[D];北京郵電大學(xué);2014年
5 蔡明杰;抽取式一氧化碳濃度檢測(cè)系統(tǒng)的研究[D];浙江大學(xué);2014年
6 李志;基于沃爾特拉自適應(yīng)濾波器的參量聲源非線性補(bǔ)償方法研究[D];電子科技大學(xué);2014年
,本文編號(hào):2401896
本文鏈接:http://sikaile.net/kejilunwen/wltx/2401896.html