抗干扰的可见光网络系统信号调制技术研究

Signal modulation analysis of an anti-jamming visible light network system

针对当前可见光网络系统信号调制方式识别方法难以抵抗各种干扰的问题,设计了一种抗干扰的可见光网络系统信号调制方式识别方法。首先对当前光网络系统信号调制方式识别的研究现状进行分析,找到引起缺陷的因素,然后提取光网络系统信号调制方式识别的特征,并对特征进行加权融合处理,最后建立了光网络系统信号调制方式识别模型,并采用仿真实验验证本文方法的性能。结果表明,本文方法能够有效的抵抗各种干扰,具有较强的鲁棒性,同时获得了较高的光网络系统信号调制方式识别正确率,识别效果要优于其它光网络系统信号调制方式识别方法。

In view of the problem that the signal modulation recognition method of the visible light network system is difficult to resist all kinds of interference,a method of signal modulation recognition in the visible light network system with anti-interference is designed. Firstly,the current research status of signal modulation recognition in optical network system is analyzed,and the factors that cause the defect are found. Then the spectrum features identified by the optical network system signal modulation method are extracted,and the features are weighted fusion processing. Finally,a signal modulation recognition model for optical network system is established,the performance of the proposed method is verified by simulation experiments. The results show that this method can effectively resist all kinds of interference and has strong robustness. At the same time,the recognition rate of signal modulation in optical network system is higher,and the recognition effect is better than that of other optical network system signal modulation recognition methods.