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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Secure Degrees of Freedom of MIMO Two-Way Wiretap Channel With no CSI Anywhere
TL;DR: This article considers a two-way multiple-input multiple-output (MIMO) Rayleigh block fading wiretap channel with two full-duplex nodes exchanging messages simultaneously and wiretapped by a eavesdropper (Eve) and shows that the optimal s.d.o.f. can be independent of coherence time T and becomes the product of the numbers of legitimate nodes’s transmitter antennas (NLNTA) for large and small NLNTA.
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Secrecy Outage Performance for DF Buffer-Aided Relaying Networks With a Multi-Antenna Destination
TL;DR: The secrecy outage performance of decode-and-forward (DF) buffer-aided relaying networks with a multi-antenna destination in the presence of an eavesdropper is investigated and the secrecy coding gain of the system differs with different schemes.
Proceedings ArticleDOI
A cooperative jamming protocol for full-duplex relaying with full-duplex receiver
TL;DR: It is demonstrated that the secrecy performance of the system can be significantly enhanced and the gain in terms of the decreased secrecy outage probability becomes more evident in case that the RSI is somewhat low when the proposed protocol is used.
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A Lightweight Key Generation Scheme for Secure Device-to-Device (D2D) Communication
TL;DR: In this paper, the authors proposed a secret key agreement protocol by using interference in wireless D2D fading channel, which establishes symmetrical keys for two wireless devices by measuring channel gains and utilizing artificial jamming sent by the third party to change the measured value of channel gains.
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