Deep Learning-Based Automatic Modulation Classification Over MIMO Keyhole Channels

Automatic modulation classification (AMC) is a significant part of cognitive communication systems. In early researches, likelihood-based (LB) and feature-based (FB) solutions were proposed for the AMC problem. With the developments in the data-driven approaches, a third method based on deep learnin...

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Main Authors: P. Dileep, Aashvi Singla, Dibyajyoti Das, Prabin Kumar Bora
Format: Article
Language:English
Published: IEEE 2022-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9845419/
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author P. Dileep
Aashvi Singla
Dibyajyoti Das
Prabin Kumar Bora
author_facet P. Dileep
Aashvi Singla
Dibyajyoti Das
Prabin Kumar Bora
author_sort P. Dileep
collection DOAJ
description Automatic modulation classification (AMC) is a significant part of cognitive communication systems. In early researches, likelihood-based (LB) and feature-based (FB) solutions were proposed for the AMC problem. With the developments in the data-driven approaches, a third method based on deep learning (DL) has recently gained prominence among AMC researchers. It is shown that convolutional neural network based classifiers are very efficient in the AMC for both single input single output (SISO) and multiple-input multiple-output (MIMO) systems. However, for most of the works in MIMO-AMC, the channel considered is full rank. This work addresses the problem of AMC over rank deficient channels such as a keyhole channel using a DL-based classifier. The classifier utilizes a CNN, which does not employ pooling layers or dropouts in the convolutional layers. To further improve the classification accuracy, decision cooperation as well as feature fusion is employed. In addition to the keyhole effect, this work investigates the effect of antenna correlation on DL-based AMC. A comparative study of the proposed method and the existing FB AMC method for the MIMO keyhole channel is also presented.
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spelling doaj.art-cc13f55bd1fa49ebabd3fa185fd93aca2022-12-22T03:41:59ZengIEEEIEEE Access2169-35362022-01-011011956611957410.1109/ACCESS.2022.31952299845419Deep Learning-Based Automatic Modulation Classification Over MIMO Keyhole ChannelsP. Dileep0https://orcid.org/0000-0003-3926-8146Aashvi Singla1Dibyajyoti Das2Prabin Kumar Bora3IIT Guwahati, Guwahati, IndiaIIT Guwahati, Guwahati, IndiaIIT Guwahati, Guwahati, IndiaIIT Guwahati, Guwahati, IndiaAutomatic modulation classification (AMC) is a significant part of cognitive communication systems. In early researches, likelihood-based (LB) and feature-based (FB) solutions were proposed for the AMC problem. With the developments in the data-driven approaches, a third method based on deep learning (DL) has recently gained prominence among AMC researchers. It is shown that convolutional neural network based classifiers are very efficient in the AMC for both single input single output (SISO) and multiple-input multiple-output (MIMO) systems. However, for most of the works in MIMO-AMC, the channel considered is full rank. This work addresses the problem of AMC over rank deficient channels such as a keyhole channel using a DL-based classifier. The classifier utilizes a CNN, which does not employ pooling layers or dropouts in the convolutional layers. To further improve the classification accuracy, decision cooperation as well as feature fusion is employed. In addition to the keyhole effect, this work investigates the effect of antenna correlation on DL-based AMC. A comparative study of the proposed method and the existing FB AMC method for the MIMO keyhole channel is also presented.https://ieeexplore.ieee.org/document/9845419/Automatic modulation classification (AMC)deep learningconvolutional neural network (CNN)keyhole channelmultiple input multiple output systems (MIMO)correlated MIMO channels
spellingShingle P. Dileep
Aashvi Singla
Dibyajyoti Das
Prabin Kumar Bora
Deep Learning-Based Automatic Modulation Classification Over MIMO Keyhole Channels
IEEE Access
Automatic modulation classification (AMC)
deep learning
convolutional neural network (CNN)
keyhole channel
multiple input multiple output systems (MIMO)
correlated MIMO channels
title Deep Learning-Based Automatic Modulation Classification Over MIMO Keyhole Channels
title_full Deep Learning-Based Automatic Modulation Classification Over MIMO Keyhole Channels
title_fullStr Deep Learning-Based Automatic Modulation Classification Over MIMO Keyhole Channels
title_full_unstemmed Deep Learning-Based Automatic Modulation Classification Over MIMO Keyhole Channels
title_short Deep Learning-Based Automatic Modulation Classification Over MIMO Keyhole Channels
title_sort deep learning based automatic modulation classification over mimo keyhole channels
topic Automatic modulation classification (AMC)
deep learning
convolutional neural network (CNN)
keyhole channel
multiple input multiple output systems (MIMO)
correlated MIMO channels
url https://ieeexplore.ieee.org/document/9845419/
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AT aashvisingla deeplearningbasedautomaticmodulationclassificationovermimokeyholechannels
AT dibyajyotidas deeplearningbasedautomaticmodulationclassificationovermimokeyholechannels
AT prabinkumarbora deeplearningbasedautomaticmodulationclassificationovermimokeyholechannels