时变光通信环境下的调制技术研究
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摘要
调制识别是光通信系统中的一项重要技术,当前调制识别没有考虑光通系统的时变性,得到的调制识别错误率高,为了提高光通信系统的调制识别效果,设计了一种时变光通信环境下的调制识别技术。首先考虑通信系统受噪声影响导致的时变性,引入小波变换对光通信系统信号进行预处理,然后提取光通信系统的调制识别特征数,并采用数据挖掘技术建立调制识别的分类器,实现光通信系统调制的识别,最后对光通信系统的几种典型调制方式进行仿真模拟实验,本文技术对几种典型的调制方式进行准确识别,可以实现调制识别的实时在线分析,并且调制方式识别准确率高于当前其它光通信系统调制方式识别技术,实际应用价值更高。
Modulation recognition is an important technology in optical communication system. Currently,modulation recognition does not consider the time-varying of optical system,and the error rate of modulation recognition is high. Firstly,considering the time-varying of communication system caused by noise,wavelet transform is introduced to preprocess the signal of optical communication system,then the modulation recognition characteristic number of optical communication system is extracted,and the classifier of modulation recognition is established by data mining technology to realize modulation recognition of optical communication system. Finally,the optical communication system is realized. Several typical modulation modes are simulated and experimented. In this paper,several typical modulation modes are identified accurately,and the real-time on-line analysis of modulation recognition can be realized. The recognition accuracy of modulation modes is higher than that of other modulation modes in optical communication systems,and the practical application value is higher.
Modulation recognition is an important technology in optical communication system. Currently,modulation recognition does not consider the time-varying of optical system,and the error rate of modulation recognition is high. Firstly,considering the time-varying of communication system caused by noise,wavelet transform is introduced to preprocess the signal of optical communication system,then the modulation recognition characteristic number of optical communication system is extracted,and the classifier of modulation recognition is established by data mining technology to realize modulation recognition of optical communication system. Finally,the optical communication system is realized. Several typical modulation modes are simulated and experimented. In this paper,several typical modulation modes are identified accurately,and the real-time on-line analysis of modulation recognition can be realized. The recognition accuracy of modulation modes is higher than that of other modulation modes in optical communication systems,and the practical application value is higher.
引文
[1]汪渊,梁昊,金革.量子通信中的窄脉冲光调制技术[J].核电子学与探测技术,2014,34(3):385-387.
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[12]赵永平,张世平,杨硕等.基于Σ-Δ调制技术的TWACS通信信号特征提取[J].哈尔滨工业大学学报,2005,12(07):992-995.
[13]左健存,宋文涛,罗汉文,徐友云.用于移动多媒体通信的双重自适应Turbo编码调制技术[J].上海交通大学学报,2004,10(S1):67-72.
[14]王岩,张化勋,张猛,孙海欣.深空通信中新型脉冲位置调制技术研究[J].中国激光,2016,43(5):167-175.
[15]卢敦陆.海面通信信道盲均衡中的小波变换调制技术研究[J].舰船科学技术,2016,38(4):76-78.
[16]关伟鹏,文尚胜,胡卉馨,陈颖聪.基于双重调制技术的可见光通信系统研究[J].光电子·激光,2015,26(11):2125-2132.
[17]孙锐,赵烨.一种用于UWB通信系统的调制技术[J].合肥工业大学学报(自然科学版),2007,22(6):690-692.
[2]张亚洲,李智.大气激光通信中压缩数字脉冲间隔调制技术[J].电讯技术,2013,53(10):1367-1373.
[3]王璞瑶,刘丹,赵怡春,等.大气激光通信系统偏振移位键控调制技术[J].红外与激光工程,2012,41(10):2712-2717.
[4]杨絮,宋路,王威,王圣达.高速光纤通信系统调制技术仿真研究[J].半导体光电,2011,32(6):857-861.
[5]刘金龙,左勇,张文博,伍剑.基于FPGA平台紫外通信系统的调制技术研究[J].光电子技术,2011,31(3):188-191.
[6]舒芳,敖发良,孙丽华.自适应编码调制技术在大气激光通信中的应用研究[J].微计算机信息,2010,26(15):148-149,147.
[7]谢志远,聂立贤.基于PLC通信的噪声特性及多载波调制技术研究[J].电子技术应用,2009,35(11):93-96.
[8]张霞,王芳,张民,等.光纤通信系统中CSRZ码多级相位调制技术的研究(英文)[J].光子学报,2009,38(10):2568-2572.
[9]李滢,杨维. OFDM调制技术在矿井巷道中的通信性能仿真分析[J].北京交通大学学报,2009,33(2):67-72.
[10]杨维,牛丽,齐辉. DS-CDMA调制技术在矿井巷道中的通信性能分析[J].煤炭科学技术,2008,17(3):88-91,57.
[11]杜洪峰,周正.基于自适应调制技术的MIMO UWB无线通信系统的研究[J].电子与信息学报,2006,8(2):213-216.
[12]赵永平,张世平,杨硕等.基于Σ-Δ调制技术的TWACS通信信号特征提取[J].哈尔滨工业大学学报,2005,12(07):992-995.
[13]左健存,宋文涛,罗汉文,徐友云.用于移动多媒体通信的双重自适应Turbo编码调制技术[J].上海交通大学学报,2004,10(S1):67-72.
[14]王岩,张化勋,张猛,孙海欣.深空通信中新型脉冲位置调制技术研究[J].中国激光,2016,43(5):167-175.
[15]卢敦陆.海面通信信道盲均衡中的小波变换调制技术研究[J].舰船科学技术,2016,38(4):76-78.
[16]关伟鹏,文尚胜,胡卉馨,陈颖聪.基于双重调制技术的可见光通信系统研究[J].光电子·激光,2015,26(11):2125-2132.
[17]孙锐,赵烨.一种用于UWB通信系统的调制技术[J].合肥工业大学学报(自然科学版),2007,22(6):690-692.