铁路无线集群通信网络信号增强方法研究  

Research on Signal Enhancement Method of Railroad Wireless Trunking Communication Network

作　　者：柳美平 张线媚 杨燕[1] LIU Mei-ping;ZHANG Xian-mei;YANG Yan(Xi'an Siyuan College,Xi'an 710038 China)

机构地区：[1]西安思源学院,陕西西安710038

出　　处：《自动化技术与应用》2022年第10期133-136,共4页Techniques of Automation and Applications

基　　金：2020年陕西省教育厅专项科研计划项目(20JK0856)。

摘　　要：针对传统信号增强方法构建得到的噪声与信号间的误差定量关系存在冗余,导致增强后的信号幅值较大,信号不稳定的问题。构建源信号与观测信号的数量关系后,定义铁路无线集群信号的独立分量,引入Infomax算法迭代处理为分量非线性处理过程,设计网络信息极大准则,利用连续小波变换处理已构建的数值关系,控制计算信号的频率分辨率,最终完成对信号增强方法的构建。模拟搭建铁路无线集群结构后,采集无线通信信号,准备两种传统信号增强方法与所设计的信号增强方法进行实验,结果表明:所研究的信号增强方法增强处理的信号幅值最小,传输更加稳定。In view of the redundancy of the quantitative relationship between noise and signal error constructed by traditional signal enhancement methods, the amplitude of enhanced signal is large and the signal is unstable. After the quantitative relationship between the source signal and the observation signal is constructed, the independent components of the Railway Wireless Cluster signal are defined, and the infomax algorithm iterative processing is introduced as the component nonlinear processing process.The maximum criterion of network information is designed, and the continuous wavelet transform is used to process the constructed numerical relationship to control the frequency resolution of the calculated signal and the redundancy generated in the signal quantification, Finally, the construction of signal enhancement method is completed. After simulating the construction of railway wireless cluster structure, the wireless communication signals are collected, and two traditional signal enhancement methods and the designed signal enhancement method are prepared for experiments. The results show that the signal amplitude of the researched signal enhancement method is the smallest, and the transmission is more stable.

关 键 词：铁路无线集群 通信网络 信号增强 冗余 

分 类 号：TN929.5[电子电信—通信与信息系统]