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 Access

Artificial Noise-Based Physical-Layer Security in Interference Alignment Multipair Two-Way Relaying Networks

Deeb Assad Tubail, Mohammed El‐Absi, Salama Ikki, Wessam Mesbah, Thomas Kaiser

Published Jan 1, 2018• 17 citations
Publisher

Abstract

This paper introduces two novel physical-layer security algorithms for interference alignment (IA)-based multipair communication systems with a single half-duplex relay and a single eavesdropper. According to these proposed physical-layer security algorithms, users mix their information signals with jamming signals, and broadcast them at the multiple access phase, while the relay forwards the mixed signals at the broadcast phase. Moreover, the relay and users' precoding and decoding matrices are designed in a way which enables the legitimate receivers to eliminate the jamming signals while the hidden eavesdropper is unable to eliminate these jamming streams. In this context, the proposed algorithms are designed to transmit the information streams with minimum power, preserving the user received signal to noise ratio above a pre-determined threshold and utilizing the remaining power for the jamming signals. Therefore, the user and relay power budgets allocation is formulated as a joint optimization problem that can be solved using an iterative optimization algorithm and semi-definite programming. In such fashion, four transmission models are proposed to manage the artificial noise transmission among the different users to achieve a tradeoff between the users sum-rate and secrecy rate. Extensive simulation results are provided to show the efficiency of the proposed algorithms and the transmission models in achieving the transmission security for IA-based multiuser relaying networks.

DOI
10.1109/access.2018.2817264

Related papers

Interference Alignment for Physical Layer Security in Multi-User Networks With Passive Eavesdroppers

Lin Hu, Shuai Tan, Hong Wen +4 more

We investigate the physical layer security (PLS) in multi-user interference networks. In particular, we consider secure transmission from a legitimate source (Alice) to a legitimate destination (Bob), coexisting with multiple passive eavesdroppers (Eves), as well as multiple legitimate transceivers. By assuming that only statistical channel state informations (CSIs) of Eves and local CSIs of legitimate users are available, we propose an artificial noise (AN) assisted interference alignment (IA) for security enhancement. Unlike traditional IA based security approaches which may result in secret signal cancellation, we design a modified alternating minimization (AM) scheme to overcome this threat, by incorporating the max-eigenmode beamforming (MEB) for secure transmission. Moreover, by partitioning the IA equation into three independent subsets and their combinations, a much tighter necessary condition for IA feasibility is established. We also provide guiding insights into the practical system designs, including useful guidelines for the selection of the dimension of AN. Furthermore, the power allocation ratio between the secret signal and the AN signal is optimized to minimize the secrecy outage probability (SOP), subject to a minimum secrecy rate constraint. Numerical results demonstrate that our design can enhance both quality and security of the secret signal, and thus is suitable and reliable for PLS in interference networks.

IEEE Transactions on Information Forensics and Security•Jan 1, 2023•20 citations

Secrecy Performance of NOMA-Based Two-Way Communication System at Physical Layer

Shashibhushan Sharma, Kounteya Sarkar, Sudip Misra

Abstract This paper examines physical layer security in a NOMA-based two-way wireless communication system with several decode-and-forward relays and a malicious eavesdropper. We implement a partial relay selection system to maximize the secrecy capacity of a specific user's information signal. Two hops are involved in the communication process because of the half-duplex relay cooperation. A selected relay receives information from two users. The relay strengthens the signals and broadcasts them during the second hop. Additionally, a jammer transmits a jamming signal that is known to all legitimate nodes but appears as noise with the received signals at the eavesdropper. Since legitimate user nodes are already aware of the jamming signal, channel status information, and self-information, they can decode the original information in downlink mode by self-interference and successive interference cancellation. Secrecy outage probability, intercept probability, and secrecy throughput have been investigated as metrics to analyze the security, where the secrecy performance of a particular user is found to increase by $94.66\, \%$ with an increment in transmit SNR of jamming from $60\, dB$ to $70\, dB$ and increases by $90.78\, \%$ with an increment in the number of relays from 2 to 5.

•Apr 1, 2026•0 citations

Secure transmission for multi-antenna two-way relay cellular networks with no eavesdropper's CSI

Jae‐Hwan Lee, Jae‐Mo Kang, Hyung-Myung Kim

In this paper, we investigate the security of a multi-antenna two-way relay cellular network in the presence of a passive eavesdropper, where a base station and multiple mobile users exchange uplink and downlink information with the assistance of a relay station.We propose a secrecy scheme based on the concepts of the artificial noise scheme for the secure transmission and signal alignment scheme for the suppression of multiuser interference. This paper aims to study transceiver design to minimize the transmit power allocated to the information signal so that the transmit power allocated to the artificial noise signal can be maximized to confuse the eavesdropper, under the constraints of quality of service requirement. We show that transceiver design problems can be converted to a second-order cone programming problem and the optimal solution is obtained efficiently. The performance of the proposed secrecy scheme is evaluated by simulations.

International Conference on Telecommunications•Jan 1, 2015•0 citations

Secure Transmission Schemes for Two-Way Relay Networks

Miao Luo, Xiaoping Li, Jianquan Wang +3 more

We investigate the physical-layer security problems of two-way relay networks in this paper. The whole network consists of two legitimate users and one eavesdropper, where the legal users need the help of some intermediate nodes to exchange information. We propose joint jamming and relaying mechanism, where a jamming node is selected from all intermediate nodes, to create interference upon eavesdropper, while other nodes are used to relay data for two users. All intermediate nodes are subjected to per-node power constraints. Based on null-space beamforming, we propose two different transmission schemes when the number of relay nodes is large enough. One scheme is designed to maximize the secrecy sum rate (MSSR) of the network, and the other is designed to maximize the minimum secrecy rate (MMSR) between two users. In the MMSR scheme, a series of semi-definite programming problems with a rank-1 constraint needs to be solved. We prove that this rank-1 constraint does not affect the solutions of original problems. In addition, we propose two modified secure transmission schemes when the number of relay nodes is less abundant. In short, no matter how many intermediate nodes in the communication networks, one can find suitable transmission schemes to ensure communication security.

IEEE Access•Jan 1, 2019•6 citations

Improving Physical Layer Security of AF Relay Networks via Beam-Forming and Jamming

Abdelhamid Salem, Khairi Ashour Hamdi

In this paper the cooperation of beam-forming and artificial noise (AN) in two-hop amplify-and- forward (AF) relaying system is proposed to enhance the security. we consider a half duplex AF relaying network with a multi-antenna source node and a destination in the presence of a passive eavesdropper.Since channel state information (CSI) of the eavesdropper is unknown, the AN transmitted by the source in the first phase and by the relays in the second phase is in all directions except the legitimate node one. As such two scenarios are considered here,: i) when all the relays amplify and forward the information source signal ii) when only the best relay is selected to amplify and forward the information source signal. The beam-former weights and the power allocation are obtained by solving an optimization problem. Results reveal that the proposed system can provide considerable improvements in terms of secrecy rate. It is also found that increasing the AN power, relative to the information signal power, will further improve the secrecy rate.

IEEE Vehicular Technology Conference•Sep 1, 2016•7 citations

Secure NOMA Based Two-Way Relay Networks Using Artificial Noise and Full Duplex

Beixiong Zheng, Miaowen Wen, Cheng‐Xiang Wang +4 more

In this paper, we develop a non-orthogonal multiple access (NOMA)-based two-way relay network with secrecy considerations, in which two users wish to exchange their NOMA signals via a trusted relay in the presence of single and multiple eavesdroppers. To ensure secure communications, the relay not only forwards confidential information to the legitimate users but also keeps emitting jamming signals all the time to degrade the performance of any potential eavesdropper. Moreover, we equip the relay and each user with the full-duplex technique in the multiple-access phase to combat the eavesdropping and improve the data transmission efficiency, respectively. We propose different decoding schemes based on the successive interference cancellation for the legitimate users, relay, and eavesdroppers. Closed-form expressions for the achievable ergodic secrecy rates of all data symbols under both single- and multiple-eavesdropper cases are derived, validated by the excellent fitting to the computer simulation results for our proposed network.

IEEE Journal on Selected Areas in Communications•Apr 9, 2018•139 citations
This paper introduces two novel physical-layer security algorithms for interference alignment (IA)-based multipair communication systems with a single half-duplex relay and a single eavesdropper. According to these proposed physical-layer security algorithms, users mix their information signals with jamming signals, and broadcast them at the multiple access phase, while the relay forwards the mixed signals at the broadcast phase. Moreover, the relay and users' precoding and decoding matrices are designed in a way which enables the legitimate receivers to eliminate the jamming signals while the hidden eavesdropper is unable to eliminate these jamming streams. In this context, the proposed algorithms are designed to transmit the information streams with minimum power, preserving the user received signal to noise ratio above a pre-determined threshold and utilizing the remaining power for the jamming signals. Therefore, the user and relay power budgets allocation is formulated as a joint optimization problem that can be solved using an iterative optimization algorithm and semi-definite programming. In such fashion, four transmission models are proposed to manage the artificial noise transmission among the different users to achieve a tradeoff between the users sum-rate and secrecy rate. Extensive simulation results are provided to show the efficiency of the proposed algorithms and the transmission models in achieving the transmission security for IA-based multiuser relaying networks.
We investigate the physical layer security (PLS) in multi-user interference networks. In particular, we consider secure transmission from a legitimate source (Alice) to a legitimate destination (Bob), coexisting with multiple passive eavesdroppers (Eves), as well as multiple legitimate transceivers. By assuming that only statistical channel state informations (CSIs) of Eves and local CSIs of legitimate users are available, we propose an artificial noise (AN) assisted interference alignment (IA) for security enhancement. Unlike traditional IA based security approaches which may result in secret signal cancellation, we design a modified alternating minimization (AM) scheme to overcome this threat, by incorporating the max-eigenmode beamforming (MEB) for secure transmission. Moreover, by partitioning the IA equation into three independent subsets and their combinations, a much tighter necessary condition for IA feasibility is established. We also provide guiding insights into the practical system designs, including useful guidelines for the selection of the dimension of AN. Furthermore, the power allocation ratio between the secret signal and the AN signal is optimized to minimize the secrecy outage probability (SOP), subject to a minimum secrecy rate constraint. Numerical results demonstrate that our design can enhance both quality and security of the secret signal, and thus is suitable and reliable for PLS in interference networks.
Abstract This paper examines physical layer security in a NOMA-based two-way wireless communication system with several decode-and-forward relays and a malicious eavesdropper. We implement a partial relay selection system to maximize the secrecy capacity of a specific user's information signal. Two hops are involved in the communication process because of the half-duplex relay cooperation. A selected relay receives information from two users. The relay strengthens the signals and broadcasts them during the second hop. Additionally, a jammer transmits a jamming signal that is known to all legitimate nodes but appears as noise with the received signals at the eavesdropper. Since legitimate user nodes are already aware of the jamming signal, channel status information, and self-information, they can decode the original information in downlink mode by self-interference and successive interference cancellation. Secrecy outage probability, intercept probability, and secrecy throughput have been investigated as metrics to analyze the security, where the secrecy performance of a particular user is found to increase by 94.66 %94.66\, \%94.66% with an increment in transmit SNR of jamming from 60 dB60\, dB60dB to 70 dB70\, dB70dB and increases by 90.78 %90.78\, \%90.78% with an increment in the number of relays from 2 to 5.
In this paper, we investigate the security of a multi-antenna two-way relay cellular network in the presence of a passive eavesdropper, where a base station and multiple mobile users exchange uplink and downlink information with the assistance of a relay station.We propose a secrecy scheme based on the concepts of the artificial noise scheme for the secure transmission and signal alignment scheme for the suppression of multiuser interference. This paper aims to study transceiver design to minimize the transmit power allocated to the information signal so that the transmit power allocated to the artificial noise signal can be maximized to confuse the eavesdropper, under the constraints of quality of service requirement. We show that transceiver design problems can be converted to a second-order cone programming problem and the optimal solution is obtained efficiently. The performance of the proposed secrecy scheme is evaluated by simulations.
We investigate the physical-layer security problems of two-way relay networks in this paper. The whole network consists of two legitimate users and one eavesdropper, where the legal users need the help of some intermediate nodes to exchange information. We propose joint jamming and relaying mechanism, where a jamming node is selected from all intermediate nodes, to create interference upon eavesdropper, while other nodes are used to relay data for two users. All intermediate nodes are subjected to per-node power constraints. Based on null-space beamforming, we propose two different transmission schemes when the number of relay nodes is large enough. One scheme is designed to maximize the secrecy sum rate (MSSR) of the network, and the other is designed to maximize the minimum secrecy rate (MMSR) between two users. In the MMSR scheme, a series of semi-definite programming problems with a rank-1 constraint needs to be solved. We prove that this rank-1 constraint does not affect the solutions of original problems. In addition, we propose two modified secure transmission schemes when the number of relay nodes is less abundant. In short, no matter how many intermediate nodes in the communication networks, one can find suitable transmission schemes to ensure communication security.
In this paper the cooperation of beam-forming and artificial noise (AN) in two-hop amplify-and- forward (AF) relaying system is proposed to enhance the security. we consider a half duplex AF relaying network with a multi-antenna source node and a destination in the presence of a passive eavesdropper.Since channel state information (CSI) of the eavesdropper is unknown, the AN transmitted by the source in the first phase and by the relays in the second phase is in all directions except the legitimate node one. As such two scenarios are considered here,: i) when all the relays amplify and forward the information source signal ii) when only the best relay is selected to amplify and forward the information source signal. The beam-former weights and the power allocation are obtained by solving an optimization problem. Results reveal that the proposed system can provide considerable improvements in terms of secrecy rate. It is also found that increasing the AN power, relative to the information signal power, will further improve the secrecy rate.
In this paper, we develop a non-orthogonal multiple access (NOMA)-based two-way relay network with secrecy considerations, in which two users wish to exchange their NOMA signals via a trusted relay in the presence of single and multiple eavesdroppers. To ensure secure communications, the relay not only forwards confidential information to the legitimate users but also keeps emitting jamming signals all the time to degrade the performance of any potential eavesdropper. Moreover, we equip the relay and each user with the full-duplex technique in the multiple-access phase to combat the eavesdropping and improve the data transmission efficiency, respectively. We propose different decoding schemes based on the successive interference cancellation for the legitimate users, relay, and eavesdroppers. Closed-form expressions for the achievable ergodic secrecy rates of all data symbols under both single- and multiple-eavesdropper cases are derived, validated by the excellent fitting to the computer simulation results for our proposed network.