Journal ArticleDOI
Transmit Antenna Selection for Security Enhancement in MIMO Wiretap Channels
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TLDR
It is proved that under the proposed protocols, the secrecy outage probability and the ε-outage secrecy capacity improve with increasing NA, as well as the secrecy diversity order and the secrecy array gain.Abstract:
We propose and analyze transmit antenna selection (TAS) to enhance physical layer security in a wiretap channel with NA antennas at the transmitter, NB antennas at the receiver, and NE antennas at the eavesdropper. We focus on the practical scenario where the transmitter does not have any channel state information (CSI) of the eavesdropper's channel. The transmitter selects a single antenna that maximizes the instantaneous signal-to-noise ratio (SNR) at the receiver. The receiver and the eavesdropper employ either maximal-ratio combining (MRC) or selection combining (SC) to combine the received signals. For the proposed protocols, we derive new closed-form expressions for the probability of non-zero secrecy capacity. We consider Nakagami-m fading with non-identical fading parameters of the main channel, mB, and of the eavesdropper's channel, mE. Next, we derive new closed-form expressions for the exact secrecy outage probability, based on which the e-outage secrecy capacity is characterized. Based on the exact expressions, we derive the asymptotic secrecy outage probability which accurately reveals the secrecy diversity order and the secrecy array gain. We confirm that the proposed protocols achieve identical secrecy diversity orders of NANBmB. An interesting conclusion is reached that this diversity order is independent of NE and mE. Furthermore, we prove that under the proposed protocols, the secrecy outage probability and the e-outage secrecy capacity improve with increasing NA.read more
Citations
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Journal ArticleDOI
Principles of Physical Layer Security in Multiuser Wireless Networks: A Survey
TL;DR: A comprehensive review of the domain of physical layer security in multiuser wireless networks, with an overview of the foundations dating back to the pioneering work of Shannon and Wyner on information-theoretic security and observations on potential research directions in this area.
Journal ArticleDOI
Physical Layer Security for Next Generation Wireless Networks: Theories, Technologies, and Challenges
TL;DR: This survey introduces the fundamental theories of PHy-security, covering confidentiality and authentication, and provides an overview on the state-of-the-art works on PHY-security technologies that can provide secure communications in wireless systems, along with the discussions on challenges and their proposed solutions.
Journal ArticleDOI
Secure Transmission in Cognitive Satellite Terrestrial Networks
TL;DR: This paper proposes to employ a multi-antenna base station (BS) as a source of green interference to enhance secure transmission in the satellite network and presents two beamforming schemes, namely, hybrid zero- forcing and partial zero-forcing to solve the optimization problem and obtain the BF weight vectors in a closed form.
Journal ArticleDOI
A Comprehensive Survey on Cooperative Relaying and Jamming Strategies for Physical Layer Security
TL;DR: A comprehensive survey of the recent works on cooperative relaying and jamming techniques for securing wireless transmissions against eavesdropping nodes, which attempt to intercept the transmissions.
Journal ArticleDOI
Physical Layer Security of TAS/MRC With Antenna Correlation
TL;DR: The impact of antenna correlation on secrecy performance of multiple-input multiple-output wiretap channels where transmitter employs transmit antenna selection while receiver and eavesdropper perform maximal-ratio combining with arbitrary correlation is analyzed.
References
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Journal ArticleDOI
Performance Analysis of Transmit and Receive Antenna Selection over Flat Fading Channels
Tansal Gucluoglu,Tolga M. Duman +1 more
TL;DR: It is shown that the space-time coded systems achieve full diversity even with antenna selection provided that the code is full rank; these results are extensions of earlier work on antenna selection for MIMO systems which only considers receive antenna selection.
Journal ArticleDOI
MIMO Interference Channel With Confidential Messages: Achievable Secrecy Rates and Precoder Design
TL;DR: A game-theoretic formulation of the problem is adopted to allow the transmitters to find an operating point that balances network performance and fairness.
Proceedings ArticleDOI
Secrecy capacity of Nakagami-m fading wireless channels in the presence of multiple eavesdroppers
TL;DR: This paper characterize the probability of non-zero secrecy capacity and secure outage probability and presents a formulation of the ergodic secrecy capacity in the presence of multiple eavesdroppers.
Proceedings ArticleDOI
On Wireless Channels with M-Antenna Eavesdroppers: Characterization of the Outage Probability and Outage Secrecy Capacity
TL;DR: It is shown that an M-antenna eavesdropper performing SDC reception has precisely the same degrading effect on secrecy as M single antenna eavesdroppers under independent fading conditions.
Journal ArticleDOI
Opal: A Multiradio Platform for High Throughput Wireless Sensor Networks
TL;DR: The design of the versatile Opal platform that couples a Cortex M3 MCU with two IEEE 802.15.4 radios for supporting sensing applications with high transfer rates without sacrificing communication range is presented.