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International Journal of Information and Electronics Engineering

On the Secure Outage Performance for Dual-Hop Network Coding Systems with Cooperative Jamming

Hequn Liu

Published Jan 1, 2014• 0 citations
Publisher

Abstract

In this paper, a design of cooperative network coding (NC) and jammer relay (JR) is proposed for this two-way network in order to improve the security of the date exchange. Considering the system over Rayleigh fading channels in the presence of one eavesdropper and two relays, we study secrecy outage (including the probability of non-zero secrecy capacity and secure outage probability), respectively. In this paper, one relay is regarded as NC relay which is used to make codes by xor in order to prevent eavesdropper's interception while the other one is regarded as a jammer relay which can send interference to eavesdropper. We derive exact expressions for the secure outage probability. The accuracy of our performance analysis is verified by simulation results.

DOI
10.7763/ijiee.2014.v4.488

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In this paper, a design of cooperative network coding (NC) and jammer relay (JR) is proposed for this two-way network in order to improve the security of the date exchange. Considering the system over Rayleigh fading channels in the presence of one eavesdropper and two relays, we study secrecy outage (including the probability of non-zero secrecy capacity and secure outage probability), respectively. In this paper, one relay is regarded as NC relay which is used to make codes by xor in order to prevent eavesdropper's interception while the other one is regarded as a jammer relay which can send interference to eavesdropper. We derive exact expressions for the secure outage probability. The accuracy of our performance analysis is verified by simulation results.
In this paper, a design of cooperative network coding (NC) and jammer relay (JR) is proposed for this two-way network in order to improve the security of the date exchange. Considering the system over Rayleigh fading channels in the presence of one eavesdropper and two relays, we study secrecy outage (including the probability of non-zero secrecy capacity and secure outage probability), respectively. In this paper, one relay is regarded as NC relay which is used to make codes by xor in order to prevent eavesdropper’s interception while the other one is regarded as a jammer relay which can send interference to eavesdropper. We derive exact expressions for the secure outage probability. The accuracy of our performance analysis is verified by simulation results.
This paper investigates the outage performance of the secure cooperative system over correlated Rayleigh fading channels in the presence of the eavesdropper and the jammer. Assuming that the transmitter knows the full channel state information (CSI) before transmission, there exist one eavesdropper and multiple cooperative relay nodes in system, and a relay node is chosen to act as jammer to send the jamming signals. We consider two typical scenarios: 1) the legitimate channel is correlated with the jamming channel to the destination, while the wiretap channel is independent of the jamming channel to the eavesdropper, and 2) the wiretap channel is correlated with the jamming channel to the eavesdropper, while the legitimate channel is independent of the jamming channel to the destination. For each scenario, we derive the expression of secrecy outage probability of the proposed secure cooperative system, respectively. Numerical results show that the channel correlation has significant impacts on the secrecy outage probability of the secure cooperative system.
In this study, secrecy outage performance is studied for partial relay selection (PRS) schemes in cooperative systems over Rayleigh fading channels. In the considered systems, there are one source (S), one destination (D), one eavesdropper, one jammer that can send interference to the eavesdropper, and N ( N > 1) relay candidates, one of which is selected as the relay (R). By considering the practical scenarios and to protect the transmitted information over R–D link from being eavesdropped, the authors propose a new transmission scheme: let D send random information to R while S sending information to R. Then, R processes the messages from S and D by XOR operation in order to prevent the eavesdropper's interception while the information is delivered between R and D. They study the secrecy outage performance for two PRS schemes: (i) the optimal source–relay link (OSRL) scheme; and (ii) the optimal source–relay–destination link (OSRDL) scheme. The closed‐form expressions for the secrecy outage probability (SOP) of the two PRS schemes are derived, as well as the closed‐form upper bound for SOP under OSRL scheme and the lower bound for SOP under OSRDL scheme. Finally, simulation results are given to verify the presented analytical models and the proposed transmission scheme.
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, we investigate secrecy communications in two-hop wireless relaying networks which consist of one source, one amplify-and-forward (AF) relay, one legitimate destination, and one eavesdropper. To prevent the eavesdropper from intercepting the source message, we make the destination send the intended noise to the AF relay during the first phase. This is referred to as cooperative jamming. According to the channel information at the destination, we address two types of jamming power allocation; (i) rate-optimal power allocation and (ii) outage-optimal power allocation. More specifically, without the instantaneous channel knowledge for the eavesdropper side, the outage probability of the secrecy rate is minimized with respect to the intended noise power level. We show that the outage-optimal allocation gives almost the same outage probability as the rateoptimal one. In addition, the jamming power consumption can be significantly reduced compared to the fixed and rate-optimal power allocation methods.