Covert Communication With Relay Selection

In this letter, we investigate covert communication in relay networks with relay selection. We consider the scenario that while forwarding the source’s message, the selected relay opportunistically transmits its own message to the destination covertly. We derive the probability of detection error (PDE) and the average covert rate (ACR) in a closed form, based on which we analyse the effects of system parameters on the performance of the covert communication. Our analysis indicates that applying relay selection causes a decrease in the PDE, however, it can provide an ACR gain when the transmission rate of the source increases.

[1]  Xiangyun Zhou,et al.  Low Probability of Detection Communication: Opportunities and Challenges , 2019, IEEE Wireless Communications.

[2]  Sang Wu Kim,et al.  Covert Communication Under Channel Uncertainty and Noise Uncertainty , 2019, ICC 2019 - 2019 IEEE International Conference on Communications (ICC).

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

[4]  Jun Li,et al.  Joint Optimization of a UAV's Trajectory and Transmit Power for Covert Communications , 2018, IEEE Transactions on Signal Processing.

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

[6]  Jianfeng Ma,et al.  Covert Wireless Communications in IoT Systems: Hiding Information in Interference , 2018, IEEE Wireless Communications.

[7]  Jianfeng Ma,et al.  On Covert Communication with Interference Uncertainty , 2018, 2018 IEEE International Conference on Communications (ICC).

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

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

[10]  Xiangyun Zhou,et al.  On Covert Communication With Noise Uncertainty , 2016, IEEE Communications Letters.

[11]  Lizhong Zheng,et al.  Fundamental Limits of Communication With Low Probability of Detection , 2015, IEEE Transactions on Information Theory.

[12]  Matthieu R. Bloch,et al.  Covert Communication Over Noisy Channels: A Resolvability Perspective , 2015, IEEE Transactions on Information Theory.

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

[14]  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.

[15]  George K. Karagiannidis,et al.  Amplify-and-Forward Relay Selection with Outdated Channel Estimates , 2012, IEEE Transactions on Communications.

[16]  Joseph Lipka,et al.  A Table of Integrals , 2010 .