Short-packet covert communication with transmission time uncertainty

Document Type

Conference Proceeding

Publication Title

2022 7th International Conference on Computer and Communication Systems, ICCCS 2022

First Page

628

Last Page

632

Publisher

IEEE

School

School of Science

RAS ID

52713

Funders

National Natural Science Foundation of China (Grants 62071486, 62171464, 62071005) / Natural Science Foundation on Frontier Leading Technology Basic Research Project of Jiangsu (Grant BK20212001) / Key R & D Program of Jiangsu Province Key project and topics (Grant BE2021095)

Comments

Lu, X., Yang, W., & Yan, S. (2022). Short-packet covert communication with transmission time uncertainty. In 2022 7th International Conference on Computer and Communication Systems (ICCCS) (pp. 628-632). IEEE. https://doi.org/10.1109/ICCCS55155.2022.9846514

Abstract

In this paper, we investigate the short-packet covert communication with transmission time uncertainty, and propose the random sub-slot selection (RSS) covert transmission scheme by exploiting the random transmission time to guarantee a higher level of communication covertness. In particular, we derive the covertness constraint and effective covert throughput (ECT) for the proposed RSS scheme, which shows that the sub-slot partition in a fixed time slot duration introduces a non-trivial tradeoff between the communication covertness and reliability from the aspects of transmission time uncertainty and packet error probability. Inspired by this, we further formulate and solve the optimization problem to maximize ECT by designing the transmit power and the number of sub-slots in each time slot. Finally, numerical results are provided to demonstrate the superiority of proposed RSS scheme relative to the existing covert communication scheme without transmission time uncertainty.

DOI

10.1109/ICCCS55155.2022.9846514

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