带干扰传输链路中分布式光纤信号无损降噪算法研究  

Research on Lossless Noise Reduction Algorithm of Distributed Optical Fiber Signal in Interference Transmission Link

作　　者：王玲[1] WANG Ling(Information Technology Department,Shanghai SIPO Polytechnic,Shanghai 200126,China)

机构地区：[1]上海思博职业技术学院信息技术系,上海200126

出　　处：《微型电脑应用》2020年第4期104-107,共4页Microcomputer Applications

摘　　要：为了提高接收端信号准确性,降低链路传输过程中的信号干扰,为此设计了带干扰传输链路中分布式光纤信号降噪算法设计。提取分布式光纤信号的时域与频域特征,得到信号输出功率。在确保信号输出功率最大的前提下,将信号分解、映射到相空间内,根据奇异值分解定理,获取信号奇异谱,根据信号奇异分析样本信号,结合小波包分解及软阈值算法完成分布式光纤信号无损降噪。实验结果表明,所提算法的光纤信号降噪效果优于实验对比方法,且信号无损伤,同时该算法运行效率更高,具有可靠性与实用性。In order to improve signal accuracy at the receiver side and reduce the signal interference in the transmission process of the link, a distributed optical fiber signal denoising algorithm in the transmission link with interference is designed. The time domain and frequency domain characteristics of distributed fiber signal are extracted, and the signal output power is obtained. On the premise of ensuring the maximum output power of the signal, the signal is decomposed and mapped into the phase space, and by the singular value decomposition theorem, the signal singular spectrum is obtained. By using the sample signal obtained from signal singular analysis, the distributed optical fiber signal lossless noise reduction is completed by combining wavelet packet decomposition and soft threshold algorithm. The experimental results show that the proposed algorithm is superior to the experimental comparison method in denoising the optical fiber signal, and the signal has no damaged.

关 键 词：干扰 传输链路 分布式 信号 降噪 

分 类 号：TN911.4[电子电信—通信与信息系统]