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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TL;DR: This work proposes a new cooperative mitigation strategy, referred to as the Semi-Coherent Fast-Forward Full-Duplex (SC-FFFD) relaying technique, wherein the victim node, upon switching to a new frequency band, seeks the assistance of its incumbent user, which is also a full-duplex radio, to instantaneously forward its messages to the destination using a portion of their powers.
Proceedings ArticleDOI
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TL;DR: In this article, a Stackelberg game was proposed to maximize the secrecy rate in a multicasting network with multiple eavesdroppers, where the private jammers and the legitimate transmitter are the leaders and the followers of the game, respectively.
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Sum Secrecy Rate Maximization in a Multi-Carrier MIMO Wiretap Channel with Full-Duplex Jamming
TL;DR: The provided rate maximization framework is shown to provide a converging minimum mean squared error (MMSE) design as a special case, and a methodology to obtain the least favorable error matrices is proposed by casting the resulting non-convex quadratic optimization into a convex problem.
References
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Journal ArticleDOI
The wire-tap channel
TL;DR: This paper finds the trade-off curve between R and d, assuming essentially perfect (“error-free”) transmission, and implies that there exists a Cs > 0, such that reliable transmission at rates up to Cs is possible in approximately perfect secrecy.
Journal ArticleDOI
Guaranteeing Secrecy using Artificial Noise
Satashu Goel,Rohit Negi +1 more
TL;DR: This paper considers the problem of secret communication between two nodes, over a fading wireless medium, in the presence of a passive eavesdropper, and assumes that the transmitter and its helpers (amplifying relays) have more antennas than the eavesdroppers.
Journal ArticleDOI
Improving Wireless Physical Layer Security via Cooperating Relays
TL;DR: Novel system designs are proposed, consisting of the determination of relay weights and the allocation of transmit power, that maximize the achievable secrecy rate subject to a transmit power constraint, or minimize the transmit powersubject to a secrecy rate constraint.
Journal ArticleDOI
Mitigation of Loopback Self-Interference in Full-Duplex MIMO Relays
TL;DR: Targeting at minimal interference power, a broad range of multiple-input multiple-output mitigation schemes are analyzed and the results confirm that self-interference can be mitigated effectively also in the presence of imperfect side information.
Journal ArticleDOI
Secure Communication Over Fading Channels
TL;DR: In this article, the secrecy capacity region of the fading broadcast channel with confidential messages (BCC) was investigated, where a source node has common information for two receivers (receivers 1 and 2), and has confidential information intended only for receiver 1.