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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A Full-Duplex Bob in the MIMO Gaussian Wiretap Channel: Scheme and Performance
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Towards secure 5G networks: A Survey
TL;DR: This paper makes an extensive review of the state of the art towards ensuring 5G security and privacy by analyzing the lessons from the 4G security system, the requirements from new scenarios and models, the challenges resulting from new technology and paradigm, and potential solutions from academia and industry.
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Secrecy Rate Optimization for Secure Multicast Communications
TL;DR: Optimization frameworks for a multicasting network in which a transmitter broadcasts the same information to a group of legitimate users in the presence of multiple eavesdroppers are studied to enhance the quality of secure communications.
Posted Content
Physical Layer Security Jamming: Theoretical Limits and Practical Designs in Wireless Networks
Kanapathippillai Cumanan,Hong Xing,Peng Xu,Gan Zheng,Xuchu Dai,Arumugam Nallanathan,Zhiguo Ding,George K. Karagiannidis +7 more
TL;DR: The theoretical limits and practical designs of jamming approaches for physical layer security explore the achievable secrecy rates of user cooperation-based jamming whilst the centralized and game theoretic-based precoding techniques are reviewed for practical implementations.
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Robust Secure Beamforming in MISO Full-Duplex Two-Way Secure Communications
TL;DR: The proposed robust secure beamforming scheme outperforms the nonrobust one and is found that when the regions of channel uncertainties and the individual transmit power constraints are sufficiently large, the proposed two-way robust secure communication is proactively degraded to one-way communication.
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