基于模式识别的光通信系统信号调制识别研究

Modulation recognition of optical communication system based on pattern recognition

当前光通信系统调制识别方法存在识别正确率低、速度慢等缺陷,难以获得理想的光通信系统信号调制识别结果。为了对光通信系统信号调制方法进行准确识别,设计了基于模式识别的光通信系统信号调制识别方法。首先对当前光通信系统信号调制识别研究现状进行分析,找到引起识别效果差的因素,然后采集光通信系统信号调制识别的数据,并采用模式识别技术对光通信系统信号调制方式的特点进行拟合,实现光通信系统信号调制识别,最后进行了光通信系统信号调制识别的验证性实验。结果表明,本文方法提高了光通信系统信号调制识别的正确率,光通信系统信号调制的误识率差小于其它光通信系统信号调制识别方法,获得了比较满意的光通信系统信号调制识别结果。

As the current modulation recognition method of optical communication system has some defects,such as low recognition precision and slow speed,it is difficult to obtain the ideal signal modulation recognition results of optical communication system. In order to accurately identify the modulation method of optical communication system,a signal modulation recognition method based on pattern recognition for optical communication system is designed. Firstly,the current status of signal modulation recognition research in optical communication system is analyzed,and the factors that cause the difference in recognition are found. Then the signal modulation recognition data of the optical communication system are collected,and the pattern recognition technology is used to fit the characteristics of the modulation mode of the optical communication system to realize the recognition of the signal modulation mode of the optical communication system. Finally,a verification experiment of modulation recognition of optical communication system is carried out. The results show that this method improves the accuracy of signal modulation recognition in optical communication system. The error rate difference of signal modulation in optical communication system is far away from other optical communication system signal modulation recognition methods,and a satisfactory signal modulation recognition result of optical communication system is obtained.