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

IEEE India Conference

Secrecy outage probability with destination assisted jamming in presence of an untrusted relay

Sanjoy Roy, Sumit Kundu, Anurag Kumar, Shashibhushan Sharma

Published Dec 1, 2016• 12 citations
Publisher

Abstract

The study of secrecy capacity of wireless networks, considering variety of powerful attacks is currently of great interest. In this paper, we have considered a possible attack scenario where an eavesdropper is present as a legitimate relay node in disguise in the network. A novel scheme of simultaneous transmission of jamming signal and message signal is proposed to confuse the eavesdropper. Here we consider a source, a destination and two amplify and forward (AF) relays each employed with a single antenna. One of the two relays used in the network is un-trusted and eavesdrop the information signal sent by the source. We analyze secrecy outage probability (SOP) of our proposed scheme under several network parameters such as target secrecy rate, transmit power of source, jamming power by destination and mean powers of fading channel. We also develop a simulation test bed to evaluate secrecy outage probability.

DOI
10.1109/indicon.2016.7838886

Related papers

Secrecy outage probability of dual hop amplify and forward relay in presence of an eavesdropper

Gowthamkrishnan Cherukuri, Shashibhushan Sharma, Sanjay Dhar Roy +1 more

In this paper we evaluate the secrecy outage probability (SOP) of an amplify and forward relay (AFR) scheme in presence of a single eavesdropper (EAV). A two hop communication scheme is studied where secrecy is enhanced by transmitting jamming signals from source (S), relay (R) and destination (D). A novel scheme of assisting the confidential information transfer by simultaneous transmission of jamming signal is presented. The source transmit power is appropriately divided for simultaneously transmission of jamming signal and information signal following a power splitting ratio (a). The performance of the scheme is evaluated in terms of secrecy outage probability (SOP) under several conditions of transmission power of source, relay, destination and SNRs of inter node channels. A MATLAB based simulation of our scheme demonstrates significant reduction of SOP.

International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET)•Mar 1, 2017•0 citations

Secure Cooperative Fixed Gain Untrusted Relay Networks with Destination Assisted Jamming under Nakagami-m Fading Channels

Anshul Pandey, Suneel Yadav

In this paper, we investigate the secrecy performance of a dual-hop cooperative untrusted relay network. In this network, a source node communicates with the destination node via an untrusted fixed-gain amplify-and-forward (AF) relay node. We use destination-assisted jamming so as to keep the source and destination nodes information confidential from the relay node. Under this scenario, we derive the exact secrecy outage probability (SOP) expression, tight approximate SOP expression, and asymptotic SOP expression in the high signal-to-noise ratio regime under Nakagami-m fading channels. The analysis studied in this paper can be applicable to any AF relaying systems for fixed relay gain, and two scenarios to calculate the fixed gain are compared in terms of SOP performance. Finally, the numerical and simulation studies corroborate our analytical findings.

IEEE International Black Sea Conference on Communications and Networking•May 26, 2020•2 citations

Cooperative jamming power control to enhance secrecy communications of AF Relaying systems for Rayleigh fading channel

Ki‐Hong Park, Mohamed‐Slim Alouini

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.

IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)•Sep 1, 2012•5 citations

Secrecy Performance of Two-Way Communication in CRN with Half-Duplex AF Relay under Eavesdropper Attacking

Shashibhushan Sharma, Sanjay Dhar Roy, Sumit Kundu

We evaluate secrecy outage probability (SOP) of a two-way communication network that uses a half-duplex amplify and forward (AF) relay in a cognitive radio network, where the relay uses two directional antennas. The transmitted signal from the cognitive sources only is eavesdropped by an eavesdropper (EAV) which however fails to eavesdrop relayed signal due to use of directional antennas. A signal from one cognitive source (CS1) acts as a jamming signal for the other at the EAV. A closed form expression for SOP, in the jamming nature of the signals of the cognitive sources, has been developed and impact of several network parameters such as primary transmit power, channel mean power, relay transmit power, and threshold secrecy rate on SOP has been evaluated. Further, MATLAB Simulation has been carried out to validate the analytical results.

IEEE International Conference on Industrial and Information Systems (ICIIS)•Dec 1, 2018•1 citation

Secrecy Outage Probability of Two-Path Successive Relaying in Physical Layer Security

Qian Yu Liau, Chee Yen Leow

Relaying is a promising technique to improve wireless physical-layer security. Existing literature shows that a full-duplex relay can further improve the secrecy capacity and secrecy outage probability compared to conventional half-duplex relay, but this comes at a price of sophisticated implementation. For sake of easy implementation, two-path successive relaying has been proposed to emulate the full-duplex relay by scheduling a pair of half-duplex relays to assist the source transmission alternately. However, the performance of two-path successive relaying in secrecy communication remains unexplored. This paper proposes a secrecy two-path successive relaying protocol for a scenario with one source, one destination and two half-duplex relays. The relays operate alternately in a time division mode to forward messages continuously from source to destination in the presence of an eavesdropper. To further confuse the eavesdropper, the source and relay are scheduled to transmit jamming signals at appropriate intervals. Analytical results on the secrecy outage probability reveals that the proposed protocol is able to deliver the target secrecy rate when the SNR of the eavesdropping channels are high. In addition, the secrecy outage probability of the proposed protocol is the joint secrecy outage probability of the relay pair. Numerical simulations show that the proposed protocol achieves the highest ergodic secrecy capacity and lowest secrecy outage probability compared to the existing half duplex relaying, full duplex relaying and full duplex jamming schemes.

IEEE International Conference on Parallel and Distributed Systems (ICPADS)•Dec 1, 2015•1 citation

Impact of Relay’s Eavesdropping on Untrusted Amplify-and-Forward Networks Over Nakagami- $m$ Fading

Fan Ding, Hui Wang, Yongming Zhou +1 more

We investigate the impact of eavesdropping on the secrecy outage performance of dual-hop amplify-and-forward networks with a single untrusted relay, in which cooperative jamming technique is employed at the destination to realize positive secrecy rate. Under Nakagami-m fading channels, we derive tight closed-form and asymptotic expressions for the lower and upper bounds of the secrecy outage probability (SOP). Our results explicitly show that a secrecy diversity order of min(m1, m2/2) in terms of the SOP is achieved, where m1and m2are the respective integer fading parameters of the source-relay and relay-destination links. Afterwards, we propose an asymptotically optimal power allocation (OPA) scheme that minimizes the SOP. Numerical and simulation results show that the proposed OPA offers significant improvement on the SOP performance, especially in the case of m1> m2/2.

IEEE Wireless Communications Letters•Sep 26, 2017•13 citations
The study of secrecy capacity of wireless networks, considering variety of powerful attacks is currently of great interest. In this paper, we have considered a possible attack scenario where an eavesdropper is present as a legitimate relay node in disguise in the network. A novel scheme of simultaneous transmission of jamming signal and message signal is proposed to confuse the eavesdropper. Here we consider a source, a destination and two amplify and forward (AF) relays each employed with a single antenna. One of the two relays used in the network is un-trusted and eavesdrop the information signal sent by the source. We analyze secrecy outage probability (SOP) of our proposed scheme under several network parameters such as target secrecy rate, transmit power of source, jamming power by destination and mean powers of fading channel. We also develop a simulation test bed to evaluate secrecy outage probability.
In this paper we evaluate the secrecy outage probability (SOP) of an amplify and forward relay (AFR) scheme in presence of a single eavesdropper (EAV). A two hop communication scheme is studied where secrecy is enhanced by transmitting jamming signals from source (S), relay (R) and destination (D). A novel scheme of assisting the confidential information transfer by simultaneous transmission of jamming signal is presented. The source transmit power is appropriately divided for simultaneously transmission of jamming signal and information signal following a power splitting ratio (a). The performance of the scheme is evaluated in terms of secrecy outage probability (SOP) under several conditions of transmission power of source, relay, destination and SNRs of inter node channels. A MATLAB based simulation of our scheme demonstrates significant reduction of SOP.
In this paper, we investigate the secrecy performance of a dual-hop cooperative untrusted relay network. In this network, a source node communicates with the destination node via an untrusted fixed-gain amplify-and-forward (AF) relay node. We use destination-assisted jamming so as to keep the source and destination nodes information confidential from the relay node. Under this scenario, we derive the exact secrecy outage probability (SOP) expression, tight approximate SOP expression, and asymptotic SOP expression in the high signal-to-noise ratio regime under Nakagami-m fading channels. The analysis studied in this paper can be applicable to any AF relaying systems for fixed relay gain, and two scenarios to calculate the fixed gain are compared in terms of SOP performance. Finally, the numerical and simulation studies corroborate our analytical findings.
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.
We evaluate secrecy outage probability (SOP) of a two-way communication network that uses a half-duplex amplify and forward (AF) relay in a cognitive radio network, where the relay uses two directional antennas. The transmitted signal from the cognitive sources only is eavesdropped by an eavesdropper (EAV) which however fails to eavesdrop relayed signal due to use of directional antennas. A signal from one cognitive source (CS1) acts as a jamming signal for the other at the EAV. A closed form expression for SOP, in the jamming nature of the signals of the cognitive sources, has been developed and impact of several network parameters such as primary transmit power, channel mean power, relay transmit power, and threshold secrecy rate on SOP has been evaluated. Further, MATLAB Simulation has been carried out to validate the analytical results.
Relaying is a promising technique to improve wireless physical-layer security. Existing literature shows that a full-duplex relay can further improve the secrecy capacity and secrecy outage probability compared to conventional half-duplex relay, but this comes at a price of sophisticated implementation. For sake of easy implementation, two-path successive relaying has been proposed to emulate the full-duplex relay by scheduling a pair of half-duplex relays to assist the source transmission alternately. However, the performance of two-path successive relaying in secrecy communication remains unexplored. This paper proposes a secrecy two-path successive relaying protocol for a scenario with one source, one destination and two half-duplex relays. The relays operate alternately in a time division mode to forward messages continuously from source to destination in the presence of an eavesdropper. To further confuse the eavesdropper, the source and relay are scheduled to transmit jamming signals at appropriate intervals. Analytical results on the secrecy outage probability reveals that the proposed protocol is able to deliver the target secrecy rate when the SNR of the eavesdropping channels are high. In addition, the secrecy outage probability of the proposed protocol is the joint secrecy outage probability of the relay pair. Numerical simulations show that the proposed protocol achieves the highest ergodic secrecy capacity and lowest secrecy outage probability compared to the existing half duplex relaying, full duplex relaying and full duplex jamming schemes.
Impact of Relay’s Eavesdropping on Untrusted Amplify-and-Forward Networks Over Nakagami- mmm Fading
We investigate the impact of eavesdropping on the secrecy outage performance of dual-hop amplify-and-forward networks with a single untrusted relay, in which cooperative jamming technique is employed at the destination to realize positive secrecy rate. Under Nakagami-m fading channels, we derive tight closed-form and asymptotic expressions for the lower and upper bounds of the secrecy outage probability (SOP). Our results explicitly show that a secrecy diversity order of min(m1, m2/2) in terms of the SOP is achieved, where m1and m2are the respective integer fading parameters of the source-relay and relay-destination links. Afterwards, we propose an asymptotically optimal power allocation (OPA) scheme that minimizes the SOP. Numerical and simulation results show that the proposed OPA offers significant improvement on the SOP performance, especially in the case of m1> m2/2.