Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of Signal Processing

Enhanced Physical-Layer Security through Joint Transmit Antenna Selection and Artificial Noise

Hou Xiao-yu

Published Jan 1, 2014• 0 citations
OpenAlex

Abstract

In this paper,an enhanced physical layer security communication scheme is proposed for the multiple antenna systems. The scheme employing transmit antenna selection and artificial noise,also Alamouti coding,improved diversity gain in legitimate channel with low complexity in the transmitter and receiver,and at the same time efficiently jammed the wiretap channel. Consequently it can increase the system secrecy capacity. We analyze the system secrecy capacity and the impacts of the number of antennas and the power allocation between the information signal and artificial noise. Simulation results demonstrate that the proposed scheme can effectively enhance the physical layer security.

Related papers

Transmit antenna selection with Alamouti scheme in MIMO wiretap channels

Shihao Yan, Nan Yang, Robert Malaney +1 more

This paper proposes a new transmit antenna selection (TAS) scheme which provides enhanced physical layer security in multiple-input multiple-output (MIMO) wiretap channels. The practical passive eavesdropping scenario we consider is where channel state information (CSI) from the eavesdropper is not available at the transmitter. Our new scheme is carried out in two steps. First, the transmitter selects the two strongest antennas based on the feedback from the receiver, which maximizes the instantaneous signal-to-noise ratio (SNR) of the transmitter-receiver channel. Second, the Alamouti scheme is employed at the selected antennas in order to perform data transmission. At the receiver and the eavesdropper, maximal-ratio combining is applied in order to exploit the multiple antennas. We derive a new closed-form expression for the secrecy outage probability in non-identical Rayleigh fading, and using this result, we then present the probability of non-zero secrecy capacity in closed form and the ε-outage secrecy capacity in numerical form. We demonstrate that our proposed TAS-Alamouti scheme offers lower secrecy outage probability than a single TAS scheme when the SNR of the transmitter-receiver channel is above a specific value.

arXiv:1303.5157•Globecom•Dec 1, 2013•8 citations

Can Bob enhance the security of the multiple antenna wiretap channel?

Nabil Romero‐Zurita, Mounir Ghogho, Des McLernon +1 more

We address the physical layer security question of whether a multiple antenna receiver can enhance the secrecy rate of the multiple-input multiple-output wiretap channel by transmitting artificial noise from some of its antennas to jam a multiple antenna eavesdropper. To answer this question we use a QoS-MMSE approach to formulate a global constrained optimisation problem that is efficiently solved after approximating it by a semidefinite program. Results suggest that an improvement in secrecy rate is possible by transmitting artificial noise from an appropriately chosen number of the receiver's antennas. We introduce two antenna configuration selection strategies to reduce system complexity and obtain the best secrecy performance.

•Jun 1, 2015•2 citations

Joint Transmit Antenna Selection and Artificial Noise for Security in MIMO Wiretap Channels

Tao Liang, Ya Jun Zhang, Guo Bin Yuan +1 more

In this paper, We propose a effective method which joint transmit antenna selection (TAS) and artificial noise to promote communication security in MIMO wiretap channels. Firstly, based on TAS protocol, the transmitter selects one antenna (the max-antenna) that maximizes the instantaneous signal-noise-ratio (SNR) at the receiver. Secondly, the transmitter uses the max-antenna to transmit valid data, and simultaneously, uses the remaining antennas to transmit artificial noise which only affects the eavesdropper. Thirdly, The receiver and the eavesdropper employ maximal-ratio combining (MRC) to combine the received signals. We focus on the practical scenario where the transmitter does not have any channel state information (CSI) of the eavesdroppers channel. Our joint TAS and artificial noise scheme (TAS-AN) have low complexity, and can enhance the systems security. The numerical simulation results verify our analysis.

Applied Mechanics and Materials•Mar 12, 2014•0 citations

Improving physical layer security jointly using full‐duplex jamming receiver and multi‐antenna jammer in wireless networks

Rui Ma, Shizhong Yang, Min Du +2 more

The issues of the physical layer security are studied, where one transmitter (Alice), one full‐duplex (FD) legitimate receiver (Bob) and one multi‐antenna jammer (Charlie) are considered to defend against multiple passive and non‐colluding eavesdroppers (Eves), for multiple‐input multiple‐output wiretap channels. With the assumption that the complete channel state information (CSI) for main channels and the statistical CSI for Eves' channels are available, an improved secrecy transmission design is proposed to minimise the secrecy outage probability (SOP), under the minimum secrecy rate requirement. In addition to integrating artificial noise aided transmit beamforming and multi‐antenna cooperative jammer to impair Eves' channels, which is widely used in many existing works, a FD legitimate receiver is applied together to further enhance physical layer security. Based on the basic probability theory and convex optimisation, the accurate closed‐form expression of the SOP is derived, and the impacts on secrecy performance are described, including the qualities of main channels, the Alice's transmit power and the number of Eves. Numerical results show that the proposed scheme using the FD Bob can significantly enhance the system security, as compared with that employing the half‐duplex Bob.

IET Communications•Mar 25, 2019•11 citations

Enhanced physical layer security through transmit antenna selection

Hirley Alves, Richard Demo Souza, Merouane Abdelkader Debbah

We analyze the physical layer security of a communication scheme with a multiple antenna legitimate transmitter, employing transmit antenna selection (TAS), and a single antenna legitimate receiver in the presence of a single antenna eavesdropper. We developed closed-form expressions for the analysis of the secrecy outage probability supposing independent and quasi-static Rayleigh fading channels. Our results show that the secrecy outage probability is considerably increased when multiple antennas are available at the legitimate transmitter. Moreover, due to the use of the TAS technique, the eavesdropper is not able to exploit the additional spatial diversity offered by the legitimate transmitter.

IEEE Globecom Workshops (GC Wkshps)•Dec 1, 2011•33 citations

Physical layer security enhancement with generalized selection diversity combining

Li Chen, Ying Yang, Guo Wei

In this paper, we present and analyze utilizing generalized selection combining (GSC) scheme to enhance the physical layer (PHY) security of a wireless communication system consisting of a single antenna transmitter, a multi-antennas receiver and a multi-antennas eavesdropper. We consider a practical scenario where GSC scheme is applied to the receiver considering both the complexity and the energy dissipation while maximal ratio combining (MRC) scheme is applied to the eavesdropper in order to maximize its instantaneous signal to noise ratio (SNR). This work bridges the gap between the existing works utilizing MRC scheme and transmit antenna selection (TAS) scheme to enhance the PHY security. Closed-form expressions for both the probability of non-zero secrecy capacity and the exact secrecy outage probability are derived over Rayleigh fading channels. The security capacity performances are also shown and analyzed through numerical results. The impacts of the number of selected branches, the average SNR of transmitter's channel and eavesdropper's channel are discussed.

IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)•Sep 1, 2013•9 citations
In this paper,an enhanced physical layer security communication scheme is proposed for the multiple antenna systems. The scheme employing transmit antenna selection and artificial noise,also Alamouti coding,improved diversity gain in legitimate channel with low complexity in the transmitter and receiver,and at the same time efficiently jammed the wiretap channel. Consequently it can increase the system secrecy capacity. We analyze the system secrecy capacity and the impacts of the number of antennas and the power allocation between the information signal and artificial noise. Simulation results demonstrate that the proposed scheme can effectively enhance the physical layer security.
This paper proposes a new transmit antenna selection (TAS) scheme which provides enhanced physical layer security in multiple-input multiple-output (MIMO) wiretap channels. The practical passive eavesdropping scenario we consider is where channel state information (CSI) from the eavesdropper is not available at the transmitter. Our new scheme is carried out in two steps. First, the transmitter selects the two strongest antennas based on the feedback from the receiver, which maximizes the instantaneous signal-to-noise ratio (SNR) of the transmitter-receiver channel. Second, the Alamouti scheme is employed at the selected antennas in order to perform data transmission. At the receiver and the eavesdropper, maximal-ratio combining is applied in order to exploit the multiple antennas. We derive a new closed-form expression for the secrecy outage probability in non-identical Rayleigh fading, and using this result, we then present the probability of non-zero secrecy capacity in closed form and the ε-outage secrecy capacity in numerical form. We demonstrate that our proposed TAS-Alamouti scheme offers lower secrecy outage probability than a single TAS scheme when the SNR of the transmitter-receiver channel is above a specific value.
We address the physical layer security question of whether a multiple antenna receiver can enhance the secrecy rate of the multiple-input multiple-output wiretap channel by transmitting artificial noise from some of its antennas to jam a multiple antenna eavesdropper. To answer this question we use a QoS-MMSE approach to formulate a global constrained optimisation problem that is efficiently solved after approximating it by a semidefinite program. Results suggest that an improvement in secrecy rate is possible by transmitting artificial noise from an appropriately chosen number of the receiver's antennas. We introduce two antenna configuration selection strategies to reduce system complexity and obtain the best secrecy performance.
In this paper, We propose a effective method which joint transmit antenna selection (TAS) and artificial noise to promote communication security in MIMO wiretap channels. Firstly, based on TAS protocol, the transmitter selects one antenna (the max-antenna) that maximizes the instantaneous signal-noise-ratio (SNR) at the receiver. Secondly, the transmitter uses the max-antenna to transmit valid data, and simultaneously, uses the remaining antennas to transmit artificial noise which only affects the eavesdropper. Thirdly, The receiver and the eavesdropper employ maximal-ratio combining (MRC) to combine the received signals. We focus on the practical scenario where the transmitter does not have any channel state information (CSI) of the eavesdroppers channel. Our joint TAS and artificial noise scheme (TAS-AN) have low complexity, and can enhance the systems security. The numerical simulation results verify our analysis.
The issues of the physical layer security are studied, where one transmitter (Alice), one full‐duplex (FD) legitimate receiver (Bob) and one multi‐antenna jammer (Charlie) are considered to defend against multiple passive and non‐colluding eavesdroppers (Eves), for multiple‐input multiple‐output wiretap channels. With the assumption that the complete channel state information (CSI) for main channels and the statistical CSI for Eves' channels are available, an improved secrecy transmission design is proposed to minimise the secrecy outage probability (SOP), under the minimum secrecy rate requirement. In addition to integrating artificial noise aided transmit beamforming and multi‐antenna cooperative jammer to impair Eves' channels, which is widely used in many existing works, a FD legitimate receiver is applied together to further enhance physical layer security. Based on the basic probability theory and convex optimisation, the accurate closed‐form expression of the SOP is derived, and the impacts on secrecy performance are described, including the qualities of main channels, the Alice's transmit power and the number of Eves. Numerical results show that the proposed scheme using the FD Bob can significantly enhance the system security, as compared with that employing the half‐duplex Bob.
We analyze the physical layer security of a communication scheme with a multiple antenna legitimate transmitter, employing transmit antenna selection (TAS), and a single antenna legitimate receiver in the presence of a single antenna eavesdropper. We developed closed-form expressions for the analysis of the secrecy outage probability supposing independent and quasi-static Rayleigh fading channels. Our results show that the secrecy outage probability is considerably increased when multiple antennas are available at the legitimate transmitter. Moreover, due to the use of the TAS technique, the eavesdropper is not able to exploit the additional spatial diversity offered by the legitimate transmitter.
In this paper, we present and analyze utilizing generalized selection combining (GSC) scheme to enhance the physical layer (PHY) security of a wireless communication system consisting of a single antenna transmitter, a multi-antennas receiver and a multi-antennas eavesdropper. We consider a practical scenario where GSC scheme is applied to the receiver considering both the complexity and the energy dissipation while maximal ratio combining (MRC) scheme is applied to the eavesdropper in order to maximize its instantaneous signal to noise ratio (SNR). This work bridges the gap between the existing works utilizing MRC scheme and transmit antenna selection (TAS) scheme to enhance the PHY security. Closed-form expressions for both the probability of non-zero secrecy capacity and the exact secrecy outage probability are derived over Rayleigh fading channels. The security capacity performances are also shown and analyzed through numerical results. The impacts of the number of selected branches, the average SNR of transmitter's channel and eavesdropper's channel are discussed.