Jammer-Aided Secure Communications for Cooperative NOMA Systems

Yu, Chao; Ko, Hak-Lim; Peng, Xin; Xie, Wenwu; Zhu, Peng

doi:10.1109/lcomm.2019.2934410

Cited by 26 publications

(29 citation statements)

References 17 publications

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“…[17][18][19][20] In the context of cooperative NOMA, physical layer security has attracted increasing research interests. [21][22][23][24][25][26] In the work of Vo et al, 21 the authors considered imperfect channel state information (CSI) and analyzed the secrecy and throughput of a cooperative NOMA energy harvesting IoT system in the presence of untrust relays. Aimming to against eavesdropping and meanwhile guarantee the quality of service (QoS) of IoTs, a beamforming design was developed by Deng et al 22 for a two-way cognitive radio IoT network.…”

Section: Introductionmentioning

confidence: 99%

“…In Reference 23, the impacts of in-phase and quadrature-phase imbalance was considered by Li et al, and the secrecy performance of cooperative NOMA IoT transmission systems was discussed. In the purpose of enhancing the security of the primary network, a CJ scheme for MISO-NOMA cognitive radio networks using SWIPT has been proposed by Zhou et al 24 For jammer-aided cooperative NOMA networks, Yu et al, 25 exploited two different relay selection schemes to for discussing the analytical and asymptotical expressions of secrecy outage probability (SOP). Besides, with the aid of a jammer, a novel CJ scheme has been derived by Chen et al 26 for maximizing the secrecy rate and effective energy efficiency (EE) in cooperative NOMA networks.…”

Section: Introductionmentioning

confidence: 99%

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Enhancing physical layer security via a UAV friendly jammer for NOMA‐based IoT systems with imperfect CSI

Chen

Zhang

2021

Trans Emerging Tel Tech

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In this article, we investigate physical layer security in downlink Internet of Things networks under imperfect channel state information (CSI), in which a controller (Alice) intends to serve two user devices (D 1 and D 2) simultaneously by using nonorthogonal multiple access (NOMA). Cooperative jamming (CJ) is introduced as a powerful solution for guaranteeing secure transmission. To be specific, we integrate an unmanned aerial vehicle (UAV) jammer that generates artificial noise to confuse multiple noncolluding eavesdroppers (Eves). Considering only D 1 requires secure transmission, we develop an adaptive power allocation scheme to maximize the secrecy rate at D 1 while meeting the desired quality of service (QoS) threshold at D 2. Furthermore, a strategy can be utilized to obtain the optimal location of the UAV jammer is derived for further performance enhancement. Besides, we also examine the impact of the channel uncertainties on system performance. Numerical results are provided to confirm the superiority and applicability of the proposed CJ scheme over benchmark schemes in terms of secrecy performance and effective energy efficiency.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancing physical layer security via a UAV friendly jammer for NOMA‐based IoT systems with imperfect CSI

Chen

Zhang

2021

Trans Emerging Tel Tech

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“…Due to the open nature of wireless channels, cooperative NOMA systems offer new possibilities and opportunities for security challenge. Recently, emerging as promising solutions to against eavesdropping and guarantee secure transmission, physical layer security techniques have attracted considerable attention and applied in cooperative NOMA systems [12][13][14][15][16][17][18]. In [12], the authors considered both amplify-and-forward (AF) and decode-and-forward (DF) protocols, and derived analytical expressions for secrecy outage probability (SOP) and secrecy capacity.…”

Section: Introductionmentioning

confidence: 99%

“…In [15], an artificial noise (AN)-aided cooperative jamming scheme for multi-input single-output NOMA Cognitive radio networks (CRNs) using simultaneous wireless information and power transfer technology has been proposed to improve the security of the primary network. The works in [16] analyzed analytical and asymptotical expressions of SOP under both random and max-min relay selection schemes for jammer-aided cooperative NOMA networks. In [17], a multi-antenna full-duplex (FD) relay has been introduced in a cooperative NOMA system with two users, and a full-duplex-jamming (FDJam) scheme has been proposed to guarantee the secure transmission for the user with a weak channel.…”

Section: Introductionmentioning

confidence: 99%

“…Different from [19,20], a friendly jammer exploiting AN beamforming is employed to disturb multiple eavesdroppers in these considered networks. Specifically, in [16][17][18], the power allocation factor is considered to be fixed in jammer-aided cooperative NOMA networks, while, in this paper, taking both security and performance guarantee into account, an efficient adaptive approach has been developed to obtain the optimal power allocation factor for the secrecy rate maximization. In addition, we define the effective sum rate as the sum rate of the secrecy rate at LU1 and the transmission rate at LU2.…”

Section: Introductionmentioning

confidence: 99%

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Cooperative Secure Transmission in MISO-NOMA Networks

Chen¹,

Zhang²,

Li³

2020

Electronics

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In this paper, we investigate cooperative secure transmission in non-orthogonal multiple access (NOMA) networks where a source (Alice) intends to transmit confidential messages to one legitimate user with high-level security requirement (LU1), and serve another normal one (LU2) simultaneously. In order to enhance the transmission security, a cooperative jammer (Charlie) is employed to confuse multiple non-colluding eavesdroppers (Eves). Taking both secrecy outage restriction of LU1 and the desired quality of service (QoS) requirement of LU2 into consideration, we propose an adaptive power allocation strategy for maximizing secrecy rate. Numerical results are provided to validate that our proposed scheme significantly outperforms the conventional NOMA secure transmission scheme.

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Full‐duplex jamming for physical layer security improvement in NOMA‐enabled overlay cognitive radio networks

Hema,

Babu

2024

Security and Privacy

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In this paper, we analyze the physical layer security (PLS) performance of nonorthogonal multiple access (NOMA)‐enabled overlay cognitive radio networks (NOMA‐OCRNs) in the presence of an external passive eavesdropper. Here PLS is expressed in terms of the secrecy outage probabilities (SOPs) experienced by the primary user (PU) and secondary user (SU). We obtain approximate expressions for the SOPs of both PU as well as SU assuming a jamming‐free environment, where both primary and secondary destination nodes are half‐duplex devices. To improve the SOP performance, we propose a jamming‐assisted framework, where full‐duplex destination nodes are employed, which are capable of transmitting jamming signals to confound the eavesdropper. Approximate expressions for the SOPs of PU and SU are derived for the jamming‐assisted framework as well. It is demonstrated that the proposed jamming‐assisted framework significantly reduces the SOPs compared to the jamming‐free scenario. We also determine optimal power allocation coefficients (OPACs) for PU and SU at the secondary transmitter that maximizes the total secrecy throughput of the jamming‐assisted NOMA‐OCRN with FD destinations. It is shown that the suggested OPAC significantly enhances the total secrecy throughput, compared to the default selection of the PAC.

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Jammer-Aided Secure Communications for Cooperative NOMA Systems

Cited by 26 publications

References 17 publications

Enhancing physical layer security via a UAV friendly jammer for NOMA‐based IoT systems with imperfect CSI

Enhancing physical layer security via a UAV friendly jammer for NOMA‐based IoT systems with imperfect CSI

Cooperative Secure Transmission in MISO-NOMA Networks

Full‐duplex jamming for physical layer security improvement in NOMA‐enabled overlay cognitive radio networks

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