Covert Communication Over Additive-Noise Channels
<|reference_start|>Covert Communication Over Additive-Noise Channels: We study the fundamental limits of covert communications over general memoryless additive-noise channels. Under mild integrability assumptions, we find a general upper bound on the square-root scaling constant, which only involves the variance of the logarithm of the probability density function of the noise. Furthermore, we show that under some additional assumptions, this upper bound is tight. We also provide upper bounds on the length of the secret key required to achieve the optimal scaling.<|reference_end|>
@article{bouette2024covert,
    title={Covert Communication Over Additive-Noise Channels},
    author={C'ecile Bouette, Laura Luzzi, Ligong Wang},
    journal={arXiv preprint arXiv:2402.16475},
    year={2024},
    archivePrefix={arXiv},
    eprint={2402.16475},
    primaryClass={cs.IT math.IT}
}