Non-Orthogonal Waveforms in Secure Communications

Tongyang Xu

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arXiv · 2004.10228

Non-Orthogonal Waveforms in Secure Communications

Tongyang Xu

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Abstract

This work investigates the possibility of using non-orthogonal multi-carrier waveforms to defend against eavesdropping attacks. The sophisticated detection required for non-orthogonal signals provides a natural defence mechanism in secure communications. However, brute-force tactics such as maximum likelihood detection would break the defence by attempting all possible solutions. Thus, a waveform scaling strategy is proposed to scale up the number of non-orthogonally packed sub-carriers, which complicates signal detections and prevents eavesdropping. In addition, a waveform tuning strategy is proposed to intentionally tune waveform parameters to enhance feature similarity. Therefore, eavesdroppers would be confused to misidentify signals resulting in subsequent detection failures.

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Tongyang Xu. 2020-04-21. Non-Orthogonal Waveforms in Secure Communications. https://arxiv.org/abs/2004.10228

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