Improving Physical Layer Secrecy Using Full-Duplex Jamming Receivers
TLDR
The proposed self-protection scheme eliminates the need for external helpers and provides system robustness and the optimal jamming covariance matrix is rank-1, and can be found via an efficient 1-D search.Abstract:
This paper studies secrecy rate optimization in a wireless network with a single-antenna source, a multi-antenna destination and a multi-antenna eavesdropper. This is an unfavorable scenario for secrecy performance as the system is interference-limited. In the literature, assuming that the receiver operates in half duplex (HD) mode, the aforementioned problem has been addressed via use of cooperating nodes who act as jammers to confound the eavesdropper. This paper investigates an alternative solution, which assumes the availability of a full duplex (FD) receiver. In particular, while receiving data, the receiver transmits jamming noise to degrade the eavesdropper channel. The proposed self-protection scheme eliminates the need for external helpers and provides system robustness. For the case in which global channel state information is available, we aim to design the optimal jamming covariance matrix that maximizes the secrecy rate and mitigates loop interference associated with the FD operation. We consider both fixed and optimal linear receiver design at the destination, and show that the optimal jamming covariance matrix is rank-1, and can be found via an efficient 1-D search. For the case in which only statistical information on the eavesdropper channel is available, the optimal power allocation is studied in terms of ergodic and outage secrecy rates. Simulation results verify the analysis and demonstrate substantial performance gain over conventional HD operation at the destination.read more
Citations
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Unified Interference Engineering for Wireless Information Secrecy
TL;DR: The unified IES combines zero forcing beamforming, artificial noise generation, cooperative jamming, and interference alignment to fully exploit the network’s capability in wireless secrecy, thereby leading to a new level of wireless information secrecy.
Proceedings ArticleDOI
Distributionally Robust Physical Layer Secrecy Design for Full-Duplex Two-Way Relay System
TL;DR: This paper deals with the physical-layer (PHY) security problem for a full-duplex two-way relay system, where two FD sources exchange confidential information through an FD relay, and develops a semidefinite relaxation (SDR)-based alternating difference-of-concave (DC) programming approach to computing a safe solution.
Proceedings ArticleDOI
Secure compute-and-forward transmission with artificial noise and full-duplex devices
TL;DR: In this paper, the authors considered a wiretap channel with an eavesdropper (Eve) and an honest but curious relay (Ray) and derived bounds on both the secrecy outage probability and the achievable secrecy-outage rates.
Proceedings ArticleDOI
Multi-beam Symbol-Level Precoding in Directional Modulation Based on Frequency Diverse Array
TL;DR: An efficient multi-beam transmission scheme that uses symbol-level precoding based on frequency diverse array (FDA) is proposed to enhance the physical layer security (PLS) and assumes that the position information of passive eavesdropper is not available at transmitter, which is a more realistic assumption.
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Mitigation of Loopback Self-Interference in Full-Duplex MIMO Relays
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