Secrecy Transmission With a Helper: To Relay or to Jam

Deng, Hao; Wang, Huiming; Wei, Guo; Wang, Wenjie

doi:10.1109/tifs.2014.2374356

Cited by 95 publications

(57 citation statements)

References 38 publications

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“…5,10,11,[16][17][18] Furthermore, we assume all communication links have complex normal distribution. Accordingly, the channels from D1-to-D2, D1-to-relay, relay-to-D2, and jammer-to-relay are respectively denoted by h 12 12 , 1r , r2 , and jr represent the channel gains between the D2D pair, D1 and relay, the relay and D2, and the jammer and relay, respectively. We model all the channel gains as ij = d −n ij , where d ij is the distance between transmitter i and receiver j, and n is the distance-dependent path loss component.…”

Section: With Jammer Scenario (Wj)mentioning

confidence: 99%

“…In this figure, the untrusted relay scenario in this paper is compared with the trusted relay mentioned in other works. [4][5][6][7][8][9][10][11][12][13] It is assumed that in the second phase, OPA has been done for ξ = ξ * . Simulation results show that ESR in T1 for OPA mode is totally consistent with trusted relay mode since in this mode, the relay plays no role in providing a D2D connection and acts only as an eavesdropper.…”

Section: Figurementioning

confidence: 99%

“…A long this line, we proceed to the OPA problem and secrecy rate analysis for the mentioned scenarios under two topologies T1 and T2. So far, the relays assisted cellular communications, [3][4][5][6][7][8][9][10][11][12][13] D2D communication using trusted relays, 22,26,27 and the security in cellular and D2D communications [14][15][16][17][18]23,28 are investigated. Here, we consider an overlay D2D pair that communicates with each other through an untrusted AF relay, where in addition to helping data transmission also plays the role of the eavesdropper.…”

Section: Introductionmentioning

confidence: 99%

“…13) and Equation(16) the received SNR in D2 and the untrusted relay are calculated, respectively, as D ≅ 2γ12 (48)…”

mentioning

confidence: 99%

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Optimal power allocation for physical layer security in device‐to‐device communications using untrusted relays

Izanlou

Mohammadi

Dosaranian‐Moghadam

2019

Trans Emerging Tel Tech

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In this paper, the physical layer security is studied in device‐to‐device (D2D) communications overlaying cellular network where a D2D pair communicates with each other through an untrusted amplify‐and‐forward (AF) relay. Meanwhile, an untrusted relay acts as an eavesdropper in the network. In addition, a jammer is used to create secure communications between D2D pairs. To obtain ergodic secrecy rate (ESR), two scenarios of without jammer (WoJ) and with jammer (WJ) are investigated. In both scenarios, first, the optimal power allocation (OPA) problem is formulated and solved, and then, new closed‐form solutions are presented by calculating the ESR. Moreover, for the WJ scenario, the slope and power offset of the ESR in high signal‐to‐noise ratio are evaluated. Simulation results are presented to determine the importance of OPA and using a jammer to improve the ESR. In addition, the effects of increasing the distance between D2D pairs with each other and with untrusted relays are investigated. The simulation results validate our closed‐form expressions and show that the ESR improves with OPA, and the ESR of the WJ scenario is higher than the WoJ scenario.

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Section: With Jammer Scenario (Wj)mentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…13) and Equation(16) the received SNR in D2 and the untrusted relay are calculated, respectively, as D ≅ 2γ12 (48)…”

mentioning

confidence: 99%

See 2 more Smart Citations

Optimal power allocation for physical layer security in device‐to‐device communications using untrusted relays

Izanlou

Mohammadi

Dosaranian‐Moghadam

2019

Trans Emerging Tel Tech

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“…As a natural extension, node cooperation by producing AN with the help of friendly jamming nodes, known as cooperative jamming has emerged as a promising technique enabling single-antenna nodes to reap the advantages of multi-antenna and enhance PHY security. [6][7][8][9] Such noise creates interference at the eavesdropper but can be viewed as a priori interference to the destination and does not affect the destination's channel, thus inherently enables secure transmission. In Dong et al, 10 a jamming strategy, where a priori jamming signal for legitimate receivers was used to interfere the eavesdropper, was proposed to enhance the secrecy for a 4-node 2-hop 1-way relay network.…”

Section: Introductionmentioning

confidence: 99%

Artificial noise–aided secure communication in a bidirectional relaying network

Liu

Wang

et al. 2017

Int J Communication

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An artificial noise strategy is proposed for amplify-and-forward bi-directional relay network where the eavesdropper can wiretap the relay channels in both hops. Artificial noise is used to confuse the eavesdropper and improve its secrecy.Specifically, the source and the relay are allowed to split their available transmit power into 2 parts: a useful information portion and a jamming portion to transmit a jamming signal. The mathematical model is established for 2-way relay network with an eavesdropper. The secrecy rate achieved by using artificial jamming is derived from the above model. The optimal power allocation with individual power constraint is obtained via sequential quadratic programming to maximize the secrecy sum rate, and 2 special cases are investigated. Furthermore, the benchmark is provided for the purpose of performance comparison.Simulation results show that the proposed strategy can significantly improve the secrecy sum rate by using artificial noise to jam the eavesdropper. KEYWORDSartificial noise, amplify-and-forward, bidirectional relaying, physical layer security, power allocation Int J Commun Syst. 2018;31:e3464.wileyonlinelibrary.com/journal/dac

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Secrecy Performance of CCRN with an EHAF Relay under Source and Destination Jamming

Sharma

Roy

Kundu

2018

Int J Communication

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In this paper, we investigate the secrecy performance of a cooperative cognitive radio network (CCRN) considering a single energy harvesting (EH) half-duplex amplify and forward (AF) relay and an eavesdropper (EAV). Power is allocated to each node under cognitive constraints. Because of the absence of a direct wireless link, secondary source (SS) communicates with secondary destination (SD) in two time slots. The SD and the SS broadcast jamming signal to confuse the EAV in the first and in the second time slots, respectively. The relay harvests energy in the first time slot and amplifies and forwards the signal to SD in the second time slot. The EAV employs maximal ratio combining scheme to extract the information. We evaluate the performance in terms of secrecy outage probability (SOP) of the proposed CCRN. The approximate expression of SOP is obtained in integration form. Improvement in SOP is expected for the proposed CCRN because of the use of jamming signals. The secrecy performance of CCRN improves with increase in primary transmit power, peak transmit power of secondary nodes, channel mean power, and energy conversion efficiency but degrades with increase in threshold outage rate of primary receiver and threshold secrecy rate. A MATLAB-based simulation framework has been developed to validate the analytical work. KEYWORDS cooperative cognitive radio network, eavesdropper attacking, energy harvesting amplify and forward relay, MRC scheme, power allocation, secrecy outage probability Int J Commun Syst. 2019;32:e3880.wileyonlinelibrary.com/journal/dac

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Secrecy Transmission With a Helper: To Relay or to Jam

Cited by 95 publications

References 38 publications

Optimal power allocation for physical layer security in device‐to‐device communications using untrusted relays

Optimal power allocation for physical layer security in device‐to‐device communications using untrusted relays

Artificial noise–aided secure communication in a bidirectional relaying network

Secrecy Performance of CCRN with an EHAF Relay under Source and Destination Jamming

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