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arXiv 2408.09616eess.SP
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基于传播特征的MIMO系统中利用信道识别进行发射机关联的卷积神经网络方法

Convolutional Neural Network Approach for Emitter Association using Channel Identification in a MIMO System based on Propagation Features

Michael F. Talley, Kofi Nyarko, Willie L. Thompson, Arlene Cole-Rhodes, Craig Scott

AI总结:

本研究针对4×4 MIMO系统的发射机关联问题,提出基于信道传播特征的1D DCNN及多通道模型,通过识别收发对独特信道属性实现发射机识别,准确率最高达97.22%,验证了该方法的有效性。

摘要:

本文提出了一种一维深度卷积神经网络(1D DCNN)与4×4一维DCNN多通道模型(DCNN-MCM)的应用方案,用于在4×4多输入多输出(MIMO)系统中,预测每个发射机对应的信道与给定发射机相关联的概率。与传统的发射机关联(EA)方法不同,本研究反直觉地提出基于信道特征(CFs,如信道冲激响应(CIR)和传递函数(TF))来识别接收的射频(RF)信号。基于信道特征,每个收发对都具备独特属性,可用于区分不同的发射机。更具体地说,信道特征通常由广义平稳(WSS)随机过程定义,这赋予它们统计独立性、互易性等适用于发射机关联的独特属性。借助这些信道特征,接收的射频信号可用于测量发射机周围的杂波和物体。在合理假设每个发射机周围的杂波和物体均具有唯一性的前提下,对这类杂波的估计与跟踪提供了一种识别观测信号由哪个发射机发送的方法。该方法对发射机的分类识别准确率表现优异,DCNN达到97.22%,DCNN-MCM达到88.89%。研究还将该方法与已有方法的准确率进行了对比,以验证方法的有效性并探讨未来改进方向。

英文摘要:

In this paper, an application of a 1D deep convolutional neural network (DCNN) and 4x4 1D DCNN Multi-channel Model (DCNN-MCM) was developed to predict the probability of a channel being associated with a given transmitter for each emitter in a 4x4 multi-input multi-output (MIMO) system. Counterintuitively, compared to the traditional approach to emitter association (EA), this research argues for the identification of received RF signals based on channel features (CFs) such as the channel impulse response (CIR) and transfer function (TF). Based on the CFs there are unique properties per transmit and receive pair that can be used to identify the different transmitters. More specifically, CFs are often defined by a wide sense stationary (WSS) stochastic process which gives them unique properties such as, being statistically independent and reciprocal for emitter association. Given these CFs, the received RF signals can be used to measure the clutter and objects surrounding the emitters. Safely assuming the surrounding clutter and objects are unique to each emitter, the estimation and tracking of this clutter provides a way of identifying what emitter is transmitting the observed signal. This method successfully classifies and identifies the emitters at 97.22% and 88.89% accuracy for the DCNN and DCNN-MCM respectively. This method was further compared with the accuracy of previous methods to test the validity of the approach and future improvements.

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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