Joint relay and jammer selection for secure cooperative networks with a full‐duplex active eavesdropper

He, Zhou; He, Dongxuan; Wang, Hua

doi:10.1049/iet-com.2019.1042

Cited by 7 publications

(6 citation statements)

References 39 publications

(74 reference statements)

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“…In Guo et al, 19 multiple energy harvesting intermediate nodes were considered to assist the secure communication of a source‐destination pair, where a best intermediate node was selected as a relay and all the remaining intermediate nodes were selected as jammers and the sum secrecy rate was maximized by optimizing the energy harvesting parameters and the beamformers. Note that the previous works 16–19 only considered to select a relay or a jammer to improve the physical layer security. The works considered to select multiple relays and multiple jammers to improve the physical layer security include 20,21 .…”

Section: Introductionmentioning

confidence: 99%

“…In Vo et al, 17 an energy harvesting wireless sensor network with one sensor source, one destination, and multiple relays in the presence of multiple eavesdroppers was considered, where one of the relays was proposed to act as a jammer, and the closed‐form expression for the secrecy outage probability was obtained. In Zhou et al, 18 two joint relay and jammer selection schemes were proposed for a cooperative network with multiple intermediate nodes, and the closed‐form expressions for the secrecy outage probability were derived and minimized by optimizing the power allocation. In Guo et al, 19 multiple energy harvesting intermediate nodes were considered to assist the secure communication of a source‐destination pair, where a best intermediate node was selected as a relay and all the remaining intermediate nodes were selected as jammers and the sum secrecy rate was maximized by optimizing the energy harvesting parameters and the beamformers.…”

Section: Introductionmentioning

confidence: 99%

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Secure communication with joint resource allocation, relay and jammer selection in OFDM‐based cooperative networks

Liu

2021

Int J Communication

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Summary This paper considers an orthogonal frequency division multiplexing (OFDM) based cooperative network, where a source node communicates with a destination node with the help of multiple intermediate nodes, in the presence of an eavesdropper. Each intermediate node is assumed to be able to act as a relay or a jammer to improve the physical layer security. The problem of joint subcarrier allocation, power allocation, and mode selection to maximize the sum secrecy rate is investigated. We first reformulate the problem of subcarrier allocation and intermediate node mode selection as a three‐sided matching game and propose an algorithm that achieves a stable matching. Then, the sum secrecy rate is further improved by proposing a heuristic algorithm to switch the modes of the intermediate nodes. Finally, an iterative power allocation algorithm is proposed. It is verified by simulation results that the proposed algorithm outperforms various benchmark algorithms such as the equal subcarrier allocation algorithm, the pure relay selection algorithm, and the random relay selection algorithm, especially when the transmit power limit is high and the number of intermediate nodes is large.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Secure communication with joint resource allocation, relay and jammer selection in OFDM‐based cooperative networks

Liu

2021

Int J Communication

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“…Jammer and user selection schemes were presented in [28], and the secrecy outage probability expressions were obtained to evaluate the secrecy performance. In [29], Zhou et al introduced joint jammer and relay selection schemes in wireless relay network to improve the wireless security.…”

Section: B Related Workmentioning

confidence: 99%

Friendly Jammer Selection Improves Physical Layer Security in Energy Harvesting Communications over Nakagami-m Channels

Geng,

Jiang,

yan

2023

Preprint

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In this paper, we investigate the physical layer security in an energy harvesting (EH) wireless network composed of a user (U) and a base station (BS) in the face of an eavesdropper. The total communication progress is divided into two phases. In the first phase, friendly jammers (Js) powered by a power beacon (PB). And in the remaining phase, the U sends messages to BS with the help of the Js. To improve the physical layer security, we propose an optimal friendly jammer selection (OFJS) scheme and a suboptimal friendly jammer selection (SFJS) scheme depending on the availability and unavailability of channel state information (CSI) for wiretap link. For the purpose of comparison, we present the random friendly jammer selection (RFJS) scheme. We derive the closedform expressions of connection outage probability (COP), secrecy outage probability (SOP) and effective secrecy throughput (EST) for OFJS, SFJS and RFJS schemes over Nakagami-m fading channels to evaluate the system secrecy performance. Numerical results show that the secrecy performance of proposed OFJS and SFJS schemes is better than that of RFJS scheme, demonstrating the advantage of proposed OFJS and SFJS schemes in improving the physical layer security, and moreover, the performance advantage becomes more significant with the increase of the number of Js. Additionally, due to the influence of COP, three schemes reach the same EST upper bound in the high signal-tonoise ratio (SNR) region.

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“…In [4], an optimal detector for Willie under AWGN and block fading channels is proposed in single-hop system, [4] also reveals that covert communication can be achieved by varying the transmit power at Alice. Moreover, the randomness of fading channel and nodes like Jammer and Relay can be also treated as interference for Willie's detection [5][6][7]. However, the scenario considered in [6][7][8] is that Willie can only detect the forward link (Phase 2), whereas ignoring the link between Alice and Relay (Phase 1).…”

mentioning

confidence: 99%

“…Moreover, the randomness of fading channel and nodes like Jammer and Relay can be also treated as interference for Willie's detection [5][6][7]. However, the scenario considered in [6][7][8] is that Willie can only detect the forward link (Phase 2), whereas ignoring the link between Alice and Relay (Phase 1). This is not practical for implementation.…”

mentioning

confidence: 99%

A joint weighted power detector for Willie in two‐hop covert communication system

Wan

Huang

Lei

et al. 2022

Electronics Letters

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This letter proposes a joint weighted power detector based on maximum a posteriori probability criterion for Willie aiming at two-hop covert communication scenario, which is a near optimal detector. Instead of only supervising one single phase, Willie combines the observations of two phases to make joint decision in the proposed scheme. The proposed scheme achieves lower probability of detection error than addingpower-directly-detector scheme and the existing single-phase-detector scheme due to sufficient utilization of the two-phase observations. Numerical results demonstrate the benefit of authors' proposed scheme.Introduction: Covert communication, also known as low probability of detection (LPD) communication, is regarded as the first barrier to defend privacy security in wireless networks. The information-theoretic fundamental limits in additive white Gaussian noise (AWGN) channels are derived in [1], which also illustrates the benefits can be achieved by introducing uncertainty at Willie [2]. As reported in [3], the transmitted signal is transformed into Gaussian noise to confuse Willie's detector. In [4], an optimal detector for Willie under AWGN and block fading channels is proposed in single-hop system, [4] also reveals that covert communication can be achieved by varying the transmit power at Alice. Moreover, the randomness of fading channel and nodes like Jammer and Relay can be also treated as interference for Willie's detection [5][6][7]. However, the scenario considered in [6][7][8] is that Willie can only detect the forward link (Phase 2), whereas ignoring the link between Alice and Relay (Phase 1). This is not practical for implementation. In addition, the authors in [9] employ the single-phase-detection (SPD) scheme to analyse the covertness of two-hop scenario that Willie detects the two phases independently. Nevertheless, the joint power detector for two-hop system has rarely been studied.This letter proposes, to make Willie's detection more efficient and practical, a joint weighted power detector (JWPD) based on two-phase observation. Different from the adding-power-directly-detector (APDD) scheme that adding Willie's total received power in two phases straightforwardly, the proposed JWPD scheme combines two-phase observations efficiently based on maximum a posteriori probability (MAP) criterion to achieve a near optimal performance. Numerical results coincide with the analysis and show that JWPD scheme achieves the lowest PDE compared to SPD and APDD schemes. Therefore, the covertness of two-hop system can be further analysed with tighter covert constraint with the proposed JWPD scheme.System model: As depicted in Figure 1, considering a typical twohop covert communication system consisting of a legitimate transmitter Alice (A), a legitimate receiver Bob (B), a friendly Jammer (J ) and a cooperative decode-and-forward (DF) Relay (R) assisting Alice for covert communication (Figure 1). A malicious Willie (W ) is monitoring whether covert communication between A and B exists. Let us assume that...

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Joint relay and jammer selection for secure cooperative networks with a full‐duplex active eavesdropper

Cited by 7 publications

References 39 publications

Secure communication with joint resource allocation, relay and jammer selection in OFDM‐based cooperative networks

Secure communication with joint resource allocation, relay and jammer selection in OFDM‐based cooperative networks

Friendly Jammer Selection Improves Physical Layer Security in Energy Harvesting Communications over Nakagami-m Channels

A joint weighted power detector for Willie in two‐hop covert communication system

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