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International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC)

Secure Outage Probability Analysis of Relay Networks Based on Cooperative Jamming

Yan Zheng, Shouyi Yang, Hao Fu, Tian Chen

Published Oct 1, 2018• 5 citations
Publisher

Abstract

In view of the security of the relay system with eavesdropping node, the secure outage probability of relay system under cooperative jamming mechanism is studied based on the theory of physical layer security. The method of transmitting jamming signals by the source node and destination node is proposed to make the receiving of eavesdropping node worse than the legal node, improving the secure performance of the system. Meanwhile, the self-interference caused by the relay node in the full-duplex is avoided. The theoretical derivation of the system's secure outage probability is also made. The simulation results show that compared with the traditional relay network, the proposed system's secure outage probability is significantly reduced by using cooperative jamming technology. In addition, with the cooperative jamming mechanism, the secure outage probability of the proposed half-duplex network is better than that of full-duplex network.

DOI
10.1109/cyberc.2018.00021

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In view of the security of the relay system with eavesdropping node, the secure outage probability of relay system under cooperative jamming mechanism is studied based on the theory of physical layer security. The method of transmitting jamming signals by the source node and destination node is proposed to make the receiving of eavesdropping node worse than the legal node, improving the secure performance of the system. Meanwhile, the self-interference caused by the relay node in the full-duplex is avoided. The theoretical derivation of the system's secure outage probability is also made. The simulation results show that compared with the traditional relay network, the proposed system's secure outage probability is significantly reduced by using cooperative jamming technology. In addition, with the cooperative jamming mechanism, the secure outage probability of the proposed half-duplex network is better than that of full-duplex network.
The open nature of the wireless networks makes them vulnerable to the eavesdropper attacks. Cooperative relay transmission is a popular method to prevent the attacks of the illegal nodes. This research proposes a cooperative jamming protocol to enhance the physical layer in wireless cooperative networks, where the destination sends a jamming signal to the eavesdropper node to degrade its channel capacity. Simulations of the secrecy performance metrics in terms of the secrecy capacity and secrecy outage probability are presented and discussed to measure the security level of the proposed jamming protocol. In this paper, different channels namely Rician fading, Rayleigh fading, and Additive White Gaussian Noise (AWGN) channels are investigated in the half-duplex two-way relaying system to obtain the maximum secrecy performance. Based on the results, the highest secrecy capacity is achieved by using the Rician fading channel for transmission from the source to the destination and using the Rayleigh channel as the jamming link to degrade the eavesdropper capacity.
The open nature of the wireless networks makes them vulnerable to the eavesdropper attacks. Cooperative relay transmission is a popular method to prevent the attacks of the illegal nodes. This research proposes a cooperative jamming protocol to enhance the physical layer in wireless cooperative networks, where the destination sends a jamming signal to the eavesdropper node to degrade its channel capacity. Simulations of the secrecy performance metrics in terms of the secrecy capacity and secrecy outage probability are presented and discussed to measure the security level of the proposed jamming protocol. In this paper, different channels namely Rician fading, Rayleigh fading, and Additive White Gaussian Noise (AWGN) channels are investigated in the half-duplex two-way relaying system to obtain the maximum secrecy performance. Based on the results, the highest secrecy capacity is achieved by using the Rician fading channel for transmission from the source to the destination and using the Rayleigh channel as the jamming link to degrade the eavesdropper capacity.
In this paper, considering the worst case channel uncertainty, we propose a robust secure design with cooperative jamming strategy in decode-and-forward relay network. Practically, it is difficult for the full-duplex model to eliminate the self-interference and experience indicates that full-duplex schemes may not always outperform half-duplex schemes. Thus, we employ the hybrid full/half-duplex protocol to reduce the influence of self-interference. Considering imperfect eavesdropping channel condition, we propose a worst-case robust design to obtain jamming weights, which is solved through semi-definite program. Furthermore, we analyze secrecy rate and secrecy outage performance of the proposed scheme. As a benchmark, a traditional full-duplex multi-relay system based on equal-power is proposed for comparison. Simulation results demonstrate that our hybrid strategy with robust design outperforms the traditional full-duplex scheme.
The open broadcast nature of the wireless networks makes it vulnerable to the eavesdropper attacks. The physical layer security (PLS) is a grown research field that exploits the characteristics of the physical wireless channel to prevent the eavesdropper interruptions and attacks. The use of the cooperative relay transmission is a method to approach the physical layer security. This paper studies the secrecy performance metrics of the half-duplex two-way multi-relaying technique. A cooperative jamming protocol is proposed to enhance the physical layer security, where the destination sends jamming signals to the eavesdropper node to degrade its channel capacity. However, the relays can act as a jammer and send jamming signals to the eavesdropper node. Moreover, Simulations of the performance metrics namely the secrecy capacity (Cs) and the secrecy outage probability (SOP) applied on the technique are presented and discussed to measure the secrecy level of the proposed technique compared with an existing technique namely half-duplex one-way multi-relaying technique. Based on simulations and discussions the proposed technique outperforms the existing technique in term of secrecy performance.
We characterised the physical layer security of a three terminal cooperative network with full-duplex relaying under Nakagami-m channel analytically and through simulation. An eavesdropper also coexists within the system at an arbitrary distance from the transmitter. Using secrecy outage probability as a metric to characterise the secrecy performance, integral expression for the corresponding outage probability of the relevant communication link is derived. Furthermore, the secrecy outage probability with half-duplex relay is also analysed. Simulation results show that cooperative communication with FD relay has less secrecy outage even with the presence of residual self-interference than HD relay.
Cooperative communication is an emerging method that allows devices with a single antenna to share their antennas and assist other nodes in transmitting signals. This leads to enhanced spatial diversity, lower power consumption, and increased reliability of signal reception. This study uses full-duplex mode and α−μ\alpha-\muα−μ fading channels and derives the secrecy outage probability for a single relay to assess the system’s secrecy performance and examine how utilizing jamming signals affects system security. Theoretical results for the derived expression are given.