A1 Journal article (refereed)
Enhanced Physical Layer Security for Full-Duplex Symbiotic Radio with AN Generation and Forward Noise Suppression (2024)

Jin, C., Chang, Z., Hu, F., Chen, H.-H., & Hämäläinen, T. (2024). Enhanced Physical Layer Security for Full-Duplex Symbiotic Radio with AN Generation and Forward Noise Suppression. IEEE Transactions on Communications, 72(7), 3905-3918. https://doi.org/10.1109/TCOMM.2024.3364991

JYU authors or editors

Publication details

All authors or editors: Jin, Chi; Chang, Zheng; Hu, Fengye; Chen, Hsiao-Hwa; Hämäläinen, Timo

Journal or series: IEEE Transactions on Communications

ISSN: 0090-6778

eISSN: 1558-0857

Publication year: 2024

Publication date: 19/02/2024

Volume: 72

Issue number: 7

Pages range: 3905-3918

Publisher: Institute of Electrical and Electronics Engineers

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1109/TCOMM.2024.3364991

Publication open access: Not open

Publication channel open access: 

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2402.12747

Abstract

Due to the constraints on power supply and limited encryption capability, data security based on physical layer security (PLS) techniques in backscatter communications has attracted a lot of attention. In this work, we propose to enhance PLS in a full-duplex symbiotic radio (FDSR) system with a proactive eavesdropper, which may overhear the information and interfere legitimate communications simultaneously by emitting attack signals. To deal with the eavesdroppers, we propose a security strategy based on pseudo-decoding and artificial noise (AN) injection to ensure the performance of legitimate communications through forward noise suppression. A novel AN signal generation scheme is proposed using a pseudo-decoding method, where AN signal is superimposed on data signal to safeguard the legitimate channel. The phase control in the forward noise suppression scheme and the power allocation between AN and data signals are optimized to maximize security throughput. The formulated problem can be solved via problem decomposition and alternate optimization algorithms. Simulation results demonstrate the superiority of the proposed scheme in terms of security throughput and attack mitigation performance.

Keywords: wireless data transmission; radio technology; data security; encryption; signal processing; noise (radio technology)

Free keywords: physical layer security; full-duplex backscattering communication; symbiotic radio; phase control; artificial noise

Contributing organizations

Ministry reporting: Yes

VIRTA submission year: 2024

Preliminary JUFO rating: 3