The Sound and the Fury: Hiding Communications in Noisy Wireless Networks with Interference Uncertainty
Zhihong Liu, Jiajia Liu, Yong Zeng, Li Yang, and Jianfeng Ma

TL;DR
This paper explores covert wireless communication in noisy networks with interference uncertainty, demonstrating that interference randomness can enhance covert throughput despite lower rates than ideal scenarios.
Contribution
It extends covert communication theory to noisy wireless networks with interference, showing how interference uncertainty benefits covert transmission.
Findings
Interference uncertainty aids covert communication in noisy networks.
Alice can transmit (\, ext{log}_2 ext{} ext{ extasciitilde}\sqrt{n}) bits covertly.
Spatial throughput can be higher despite lower covert rates.
Abstract
Covert communication can prevent the adversary from knowing that a wireless transmission has occurred. In the additive white Gaussian noise channels, a square root law is obtained and the result shows that Alice can reliably and covertly transmit bits to Bob in channel uses. If additional "friendly" node near the adversary can inject artificial noise to aid Alice in hiding her transmission attempt, covert throughput can be improved, i.e., Alice can covertly transmit bits to Bob over uses of the channel ( is the density of friendly nodes and is the path loss exponent of wireless channels). In this paper, we consider the covert communication in a noisy wireless network, where Bob and the adversary Willie not only experience the background noise, but also the aggregated interference from…
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Taxonomy
TopicsCooperative Communication and Network Coding · Wireless Communication Security Techniques · Advanced MIMO Systems Optimization
