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arXiv 1901.09424eess.SPcs.NI
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智能干扰机识别:基于小波表示的学习方法

Identification of Smart Jammers: Learning based Approaches Using Wavelet Representation

Ozan Alp Topal, Selen Gecgel, Ender Mete Eksioglu, Gunes Karabulut Kurt

摘要:

智能干扰节点可以破坏无线网络中发射机和接收机之间的通信,并且它们会留下隐藏在时频平面中的传统干扰识别技术无法检测到的痕迹。传统的基于傅里叶变换的时频变换(TFT)技术在固定分辨率下无法有效地识别这些道。受小波变换的自适应分辨率特性的启发,本文提出了一种干扰源识别方法,该方法包括预处理步骤以获得多分辨率图像,然后使用分类器。研究了支持向量机(SVM)和深度卷积神经网络(DCNN)架构作为分类器,以自动提取变换信号的特征并对其进行分类。考虑了三种不同的干扰攻击,即以整个传输带宽为目标的阻塞干扰、以同步信号为目标的同步信号干扰攻击和以LTE下行链路传输场景中的参考信号为目标的参考信号干扰攻击。所提出的方法的性能与经典的基于傅里叶变换的TFT技术进行了比较,证明了所提出的方法在智能干扰机的存在下的有效性。

英文摘要:

Smart jammer nodes can disrupt communication between a transmitter and a receiver in a wireless network, and they leave traces that are undetectable to classical jammer identification techniques, hidden in the time-frequency plane. These traces cannot be effectively identified through the use of the classical Fourier transform based time-frequency transformation (TFT) techniques with a fixed resolution. Inspired by the adaptive resolution property provided by the wavelet transforms, in this paper, we propose a jammer identification methodology that includes a pre-processing step to obtain a multi-resolution image, followed by the use of a classifier. Support vector machine (SVM) and deep convolutional neural network (DCNN) architectures are investigated as classifiers to automatically extract the features of the transformed signals and to classify them. Three different jamming attacks are considered, the barrage jamming that targets the complete transmission bandwidth, the synchronization signal jamming attack that targets synchronization signals and the reference signal jamming attack that targets the reference signals in an LTE downlink transmission scenario. The performance of the proposed approach is compared with the classical Fourier transform based TFT techniques, demonstrating the efficacy of the proposed approach in the presence of smart jammers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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