Movable antennas with full-duplex receiver for covert communication

Author Identifier (ORCID)

Shihao Yan: https://orcid.org/0000-0002-4586-1926

Abstract

In this paper, we construct a framework for covert communication assisted by a full-duplex (FD) receiver with movable antennas (MAs). Specifically, we consider artificial noise (AN) whose transmit power follows a uniform distribution to confuse the warden equipped with the MA and derive the closed-form expressions for the communication covertness and the transmission outage probability, respectively. In the considered system, we formulate a problem to maximize the covert throughput by jointly optimizing the MAs’ positions, beamforming vector, and the transmit power of AN. To cope with the high coupling of the proposed problem, we obtain the optimal AN power and then propose an alternating optimization (AO) algorithm, where semidefinite relaxation (SDR) and projected gradient descent (PGD) are employed to optimize the beamforming vector and the MAs’ positions, respectively. Numerical results validate the effectiveness of the proposed algorithm and further compare the cases that the warden is equipped with the MA or the fixed-position antenna (FPA). As for the MA-deployed warden, the utilization of the MA at the transmitter can significantly improve the covert throughput. In addition, as for the conventional FPA-deployed warden, there exists an optimal intermediate distance between the transmit and receive antennas of the FD receiver to maximize the covert transmission throughput.

Document Type

Journal Article

Date of Publication

1-1-2026

Volume

25

Publication Title

IEEE Transactions on Wireless Communications

Publisher

IEEE

School

Security Research Institute / School of Science

Funders

National Natural Science Foundation of China (62001116, 62271150, 62371004, 62441109, 62471204) / Natural Science Foundation of Fujian Province (2024J01352) / Industry–Academia Collaboration Program of Fujian Universities (2024H6026) / Ministry of Industry and Information Technology of China (2024-RL-FZSX-01) / Key Technologies Research and Development Program of Jiangsu (BE2023022, BE2023022-2) / Major Natural Science Foundation of the Higher Education Institutions of Jiangsu Province (24KJA510003)

Comments

Hu, J., Ji, M., Wang, Y., Yan, S., Chen, Y., Shu, F., & Li, J. (2026). Movable antennas with full-duplex receiver for covert communication. IEEE Transactions on Wireless Communications, 25, 10589–10603. https://doi.org/10.1109/TWC.2026.3655004

Copyright

subscription content

First Page

10589

Last Page

10603

Link to Full Text

Share

 
COinS
 

Link to publisher version (DOI)

10.1109/TWC.2026.3655004