On the Secrecy Capacity of Covert Communication in Full-duplex Relay System

This paper investigates the fundamental capacity performance of covert communication (i.e., secrecy capacity) in a wireless relaying system consisting of a source-destination pair, a full-duplex (FD) relay and a warden. We first provide theoretical modeling for the instantaneous/average secrecy capacity under the FD mode, and then explore the corresponding optimal transmit power control of relay for the secrecy capacity maximization by carefully considering the impact of self-interference from FD mode. Finally, extensive numerical results are provided to illustrate the secrecy capacity of the relaying system under the FD modes.

[1]  Xiqi Gao,et al.  Cellular architecture and key technologies for 5G wireless communication networks , 2014, IEEE Communications Magazine.

[2]  Kai-Kit Wong,et al.  Covert Communications Versus Physical Layer Security , 2018, ArXiv.

[3]  Donald F. Towsley,et al.  Covert single-hop communication in a wireless network with distributed artificial noise generation , 2014, 2014 52nd Annual Allerton Conference on Communication, Control, and Computing (Allerton).

[4]  Athanasios V. Vasilakos,et al.  Full duplex techniques for 5G networks: self-interference cancellation, protocol design, and relay selection , 2015, IEEE Communications Magazine.

[5]  Mary Ann Weitnauer,et al.  Achieving Undetectable Communication , 2015, IEEE Journal of Selected Topics in Signal Processing.

[6]  Taneli Riihonen,et al.  Optimized gain control for single-frequency relaying with loop interference , 2009, IEEE Transactions on Wireless Communications.

[7]  Saikat Guha,et al.  Multi-Hop Routing in Covert Wireless Networks , 2018, IEEE Transactions on Wireless Communications.

[8]  Jun Li,et al.  Achieving Covert Wireless Communications Using a Full-Duplex Receiver , 2018, IEEE Transactions on Wireless Communications.

[9]  Khurram Shahzad.  Relaying via Cooperative Jamming in Covert Wireless Communications , 2018, 2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS).

[10]  Mayank Bakshi,et al.  Reliable deniable communication with channel uncertainty , 2014, 2014 IEEE Information Theory Workshop (ITW 2014).

[11]  Boulat A. Bash,et al.  Limits of Reliable Communication with Low Probability of Detection on AWGN Channels , 2012, IEEE Journal on Selected Areas in Communications.

[12]  Feng Shu,et al.  Covert Transmission With a Self-Sustained Relay , 2018, IEEE Transactions on Wireless Communications.

[13]  Shaoqian Li,et al.  Covert Communication With the Help of Relay and Channel Uncertainty , 2019, IEEE Wireless Communications Letters.

[14]  Taneli Riihonen,et al.  Hybrid Full-Duplex/Half-Duplex Relaying with Transmit Power Adaptation , 2011, IEEE Transactions on Wireless Communications.

[15]  Feng Shu,et al.  Covert Communication in Wireless Relay Networks , 2017, GLOBECOM 2017 - 2017 IEEE Global Communications Conference.

[16]  Saikat Guha,et al.  Covert Communication in the Presence of an Uninformed Jammer , 2016, IEEE Transactions on Wireless Communications.

[17]  Xiangyun Zhou,et al.  Covert Communication in Fading Channels under Channel Uncertainty , 2017, 2017 IEEE 85th Vehicular Technology Conference (VTC Spring).

[18]  Jun Li,et al.  Covert Communication Achieved by a Greedy Relay in Wireless Networks , 2017, IEEE Transactions on Wireless Communications.