CO-OFDM系統(tǒng)中交叉相位調(diào)制效應的研究
[Abstract]:The XPM effect originates from the Kerr nonlinear effect in the optical fiber, that is, in the WDM system, the change of the intensity of the light wave transmitted in one channel will modulate the light wave of the other channel by cross-phase modulation. At the same time, GVD transforms this phase modulation into amplitude modulation. The signal phase noise and amplitude noise caused by XPM effect will cause great damage to coherent optical modulation system. The damage increases with the decrease of channel spacing and the increase of fiber power in WDM system. In the past XPM research, the main consideration is the effect of XPM effect on the performance of single-carrier modulation system, and the mechanism of its generation and compensation methods have been deeply discussed and studied. However, the effect of XPM effect on multicarrier modulation systems, especially on the analysis and in-depth study of CO-OFDM systems, is very limited. CO-OFDM systems have high PAPR and strict requirements for orthogonality, which is bound to be very sensitive to the phase noise caused by XPM. Therefore, XPM crosstalk is a damage that can not be ignored in CO-OFDM system. This paper will study the XPM effect in WDM OFDM system. Firstly, this paper introduces the nonlinear damage mechanism of CO-OFDM system, including SPM,XPM,FWM and so on. Then, by solving the nonlinear Schrodinger equation in frequency domain, an inter-channel XPM mathematical model based on Volterra series is established. Using Volterra series to analyze XPM, the dispersion and XPM damage in optical fiber can be calculated simultaneously, and the transformation relationship between signal amplitude noise and phase noise in the presence of GVD does not need to be established separately. Secondly, we extend the XPM mathematical model to the dispersion management system, and establish a transmission filter model based on Volterra series which can be used to predict the XPM effect. Then, we apply the filter model to OFDM/OOK hybrid system, and predict the influence of XPM crosstalk generated by OOK channel on the performance of OFDM system. Finally, considering that the phase noise caused by XPM seriously affects the performance of CO-OFDM system, we propose to use CO-OFDM DSB modulation to reduce the influence of XPM phase noise on the performance of CO-OFDM system. With the increase of DSB modulation frequency, the phase noise caused by XPM is gradually reduced or even negligible. Then, we use the OFDM WDM system to simulate it.
【學位授予單位】:南京郵電大學
【學位級別】:碩士
【學位授予年份】:2016
【分類號】:TN929.1
【相似文獻】
相關期刊論文 前10條
1 鐘先瓊,李大義,陳建國;交叉相位調(diào)制不穩(wěn)定性的進一步分析[J];激光技術;2004年04期
2 張書敏,羅愛平,徐文成,呂福云;基于交叉相位調(diào)制的高階孤子壓縮效應的研究[J];光電子·激光;2003年08期
3 熊杰;羅斌;潘煒;;多周期色散管理系統(tǒng)中交叉相位調(diào)制產(chǎn)生的相移研究[J];激光雜志;2006年03期
4 鐘先瓊,陳建國,李大義;五階非線性色散緩變光纖負色散區(qū)的交叉相位調(diào)制非穩(wěn)[J];光電子·激光;2005年07期
5 王晶,苗洪利,馮啟元;交叉相位調(diào)制所致啁啾的研究[J];中國激光;2000年08期
6 楊慧敏;朱宏娜;;光纖中的交叉相位調(diào)制不穩(wěn)定性研究[J];光通信研究;2008年01期
7 張歡;李蔚;梅君瑤;王騰;遲楠;黃德修;;動態(tài)光網(wǎng)絡中交叉相位調(diào)制和放大自發(fā)輻射噪聲積累效應的傳輸代價[J];中國激光;2009年05期
8 李科;余震虹;;基于脈沖對交叉相位調(diào)制的亮脈沖的壓縮[J];光譜實驗室;2013年02期
9 步揚,王向朝;基于頻域相位共軛技術的交叉相位調(diào)制所致失真的復原[J];物理學報;2005年10期
10 鐘先瓊;向安平;;五階非線性下不同形狀脈沖對的交叉相位調(diào)制[J];激光技術;2008年03期
相關會議論文 前2條
1 齊俊璇;文雙春;;交叉相位調(diào)制對密集波分復用系統(tǒng)信道容量的影響[A];全國第十二次光纖通信暨第十三屆集成光學學術會議論文集[C];2005年
2 鄭勉;邱昆;;WDM光網(wǎng)絡中交叉相位調(diào)制的研究[A];通信理論與信號處理新進展——2005年通信理論與信號處理年會論文集[C];2005年
相關博士學位論文 前1條
1 熊杰;色散管理波分復用系統(tǒng)中交叉相位調(diào)制的研究[D];西南交通大學;2005年
相關碩士學位論文 前8條
1 周洪茹;CO-OFDM系統(tǒng)中交叉相位調(diào)制效應的研究[D];南京郵電大學;2016年
2 李中桂;高速光纖通信系統(tǒng)中交叉相位調(diào)制效應研究[D];電子科技大學;2003年
3 齊俊璇;交叉相位調(diào)制對密集波分復用系統(tǒng)的影響[D];武漢理工大學;2005年
4 劉穎;超常介質(zhì)中三、五階非線性引起的交叉相位調(diào)制非穩(wěn)研究[D];華東師范大學;2013年
5 周萍;基于硅納米光波導交叉相位調(diào)制的碼型轉(zhuǎn)換研究[D];浙江大學;2014年
6 余傳禧;超常介質(zhì)中高階色散和三、五階非線性對交叉相位調(diào)制不穩(wěn)定性的影響[D];華東師范大學;2015年
7 潘彥銘;電磁誘導透明中交叉相位的微波調(diào)制[D];四川師范大學;2014年
8 向磊;時域成像理論及應用研究[D];華中科技大學;2009年
,本文編號:2430100
本文鏈接:http://www.wukwdryxk.cn/kejilunwen/xinxigongchenglunwen/2430100.html