Adaptive Meta-learning-based Adversarial Training for Robust Automatic Modulation Classification

TL;DR

This paper introduces an adaptive meta-learning framework for automatic modulation classification that significantly improves robustness against unseen adversarial attacks and allows quick adaptation with minimal data, addressing real-world deployment challenges.

Contribution

It proposes a novel meta-learning-based adversarial training method that enhances AMC model robustness and enables fast online adaptation to new adversarial attacks.

Findings

Superior robustness against unseen attacks

Faster adaptation with fewer training samples

Enhanced accuracy and efficiency in real-world scenarios

Abstract

DL-based automatic modulation classification (AMC) models are highly susceptible to adversarial attacks, where even minimal input perturbations can cause severe misclassifications. While adversarially training an AMC model based on an adversarial attack significantly increases its robustness against that attack, the AMC model will still be defenseless against other adversarial attacks. The theoretically infinite possibilities for adversarial perturbations mean that an AMC model will inevitably encounter new unseen adversarial attacks if it is ever to be deployed to a real-world communication system. Moreover, the computational limitations and challenges of obtaining new data in real-time will not allow a full training process for the AMC model to adapt to the new attack when it is online. To this end, we propose a meta-learning-based adversarial training framework for AMC models that substantially enhances robustness against unseen adversarial attacks and enables fast adaptation to these attacks using just a few new training samples, if any are available. Our results demonstrate that this training framework provides superior robustness and accuracy with much less online training time than conventional adversarial training of AMC models, making it highly efficient for real-world deployment.