QPSK信号的抗干扰性能仿真分析

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英文篇名：Simulation and Analysis on Anti-interference Ability of QPSK Signal 作者：张珊 ; 付天晖 ; 田文甜 ; 王静文 ; 王敏佳 ; 杨波 英文作者：ZHANG Shan;FU Tian-hui;TIAN Wen-tian;WANG Jing-wen;WANG Min-jia;YANG Bo;College of Electrical Engineering, Naval University of Engineering; 关键词：抗干扰分析 ; QPSK调制 ; Matlab仿真 英文关键词：anti-interference analysis;;QPSK modulation;;Matlab simulation 中文刊名：通信技术 英文刊名：Communications Technology 机构：海军工程大学电子工程学院; 出版日期：2019-08-10 出版单位：通信技术 年：2019 期：08 语种：中文; 页：26-32 页数：7 CN：51-1167/TN ISSN：1002-0802 分类号：TN911.3

摘要

利用MATLAB/Simulink软件仿真平台,构建了QPSK调制解调信号系统模型,通过自定义仿真模型的建立分析了QPSK调制信号在应对单频干扰、窄带高斯白噪声干扰、调频噪声干扰以及相同调制样式的QPSK信号干扰等干扰样式时的干信比——误码率曲线图,并与理论值进行了检验,综合评价QPSK信号的抗干扰能力。结果表明,在中小信噪比的情况下,QPSK信号抗单频干扰的能力较弱,受干扰程度较大;在大信噪比的情况下,QPSK信号抗窄带高斯白噪声的能力不够,受干扰程度较小。
        The QPSK modulation and demodulation signal system model is constructed by using MATLAB/Simulink software simulation platform. Through the establishment of the self-defined simulation model,the QPSK modulation is analyzed in response to single tone interference, narrowband Gaussian white noise interference, frequency modulation noise interference, QPSK signal interference and other interference styles by JSR-BER plots. It is tested with the theoretical value so as to comprehensively evaluate the antiinterference ability of the QPSK signal. The experiment results indicate that the ability of QPSK signal to resist single-frequency interference is fairly weak, and the degree of interference is large in the case of medium and small SNR, while in the case of large SNR, the ability of QPSK signal to resist narrow-band Gaussian white noise is not enough, and the interference degree is small.

引文

[1]孔德强，刘旭光，张祥虎.地域通信网中QPSK信号的抗干扰能力研究[J].通信技术，2017,50(05):893-898.KONG De-qiang,LIU Xu-guang,ZHANG Xiang-hu.Research on Anti-interference Ability of QPSK in Regional Communication Network[J].Communications technology,2017,50(05):893-898.
    [2]刘学勇.MATLAB/Simulink通信系统建模与仿真[M].北京：电子工业出版社，2011.LIU Xue-yong.Modeling and Simulation of MATLAB/Simulink Communication Systems[M].Bejing:Electronic Industry Press,2011.
    [3]杨丽.基于MATLAB的通信系统仿真研究[D].南京：南京信息工程大学，2006.YANG Li.Simulation Research of Communication System Based on MATLAB[D].Nanjing:Nanjing University of Information Science&Technology,2006.
    [4]李媛媛，徐岩，王靖岳.对MATLAB实现数字信号的QPSK的频谱分析[J].通信技术，2008(01):41-42.LI Yuan-yuan,Xu Yan,WANG Jing-yue.Spectrum Analysis of QPSK for the Realization of Digital Signals in MATLAB[J].Communications Technology,2008(01):41-42.
    [5]冯小平，李鹏，杨绍全.通信对抗原理[M].西安：西安电子科技大学出版社，2009:206-210.FENG Xiao-ping,LI Peng,YANG Shao-quan Communication Confrontation Principle[M]Xi’an:Xi’an University Press of Electronic Science and Technology,2009:206-210.
    [6]王敬，王媛.信道中QPSK信号传输性能的仿真分析[J].电脑知识与技术，2015(7X):45-47.WANG Jing,WANG Yuan.Simulation Analysis of QPSKSignal Transmission Performance in the Channel[J]Computer Knowledge and Technology,2015(7X):45-47.