Secrecy performance of dual‐hop decode‐and‐forward relay system with diversity combining at the eavesdropper

Ghose, Sarbani; Kundu, Chinmoy; Bose, Ranjan

doi:10.1049/iet-com.2015.1060

Cited by 24 publications

(43 citation statements)

References 41 publications

(82 reference statements)

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“…The scenario considered in Zhou et al consists of one source, one destination, one eavesdropper, and one jammer that send interference to the eavesdropper. The predefined signal‐to‐noise ratio (SNR) threshold is taken into account for the relay to be able to decode or not in Ghose et al without the assumption of perfect decoding at the relays . Performances of the maximal ratio combining and selection combining diversity at the eavesdropper were thus evaluated in Ghose et al Kundu et al studied the SOP behaviors with the traditional, optimal, and suboptimal relay selection criteria.…”

Section: Introductionmentioning

confidence: 99%

Secure AF relaying with efficient partial relay selection scheme

Chu

Liu

Nguyen

2019

Int J Communication

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Summary This paper evaluates the secrecy performance for the amplify‐and‐forward (AF) protocol with partial relay selection (PRS) schemes in the scenario of multiple independent but not necessarily identically distributed eavesdroppers. The secrecy performances of the first‐hop and second‐hop PRS schemes are revisited. Given the secrecy data rate, an efficient PRS scheme is presented, which selects the relay based on the instantaneous channel state information (CSI) of either the first or second hop according to the statistical CSI of two hops. The proposed PRS scheme provides the trade‐off between the two‐hop and one‐hop PRS criteria. Results show that the secrecy outage probability (SOP) performance of the proposed scheme is close to that of the conventional opportunistic relaying in the medium main‐to‐eavesdropper ratio (MER) regions. As for the intercept probability, the second‐hop scheme achieves the highest diversity order among PRS schemes and its performance depends on the overall eavesdroppers' behavior not on individual effects of the specific relay. The proposed criterion also outperforms the first‐hop PRS scheme. Simulation results finally substantiate the accuracy of the theoretical analysis.

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Section: Introductionmentioning

confidence: 99%

Secure AF relaying with efficient partial relay selection scheme

Chu

Liu

Nguyen

2019

Int J Communication

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“…Fan et al observe that the first criterion outperforms the second criterion. Ghose et al consider a scenario in which EAV listens to the source message transmitted from both the transmitter and relay and then eavesdrops the information by employing the maximal ratio combining (MRC) and selection combing (SC) schemes. It is shown that SC scheme performs better than MRC scheme.…”

Section: Introductionmentioning

confidence: 99%

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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“…In the presence of direct links, both the destination and the eavesdropper have access to two independent versions of the source message and can therefore apply diversity combining techniques. Direct and relayed links are combined at the eavesdropper using maximal ratio combining (MRC) and selection combining (SC) in [22], and MRC in [21], [23], [24]. Diversity combining is performed both at the destination and eavesdropper using MRC technique in [25], [26], [29], [30].…”

Section: Introductionmentioning

confidence: 99%

“…In [32], only ergodic secrecy rate (ESR) is evaluate in the wiretap channel model. Recently, our works in [23], [30] studied effect of CSI knowledge on both the secrecy outage probability (SOP) and ESR in communications using relay. In [23], direct link was not considered from source to destination and [30] only considered a single diversity scheme.…”

Section: Introductionmentioning

confidence: 99%

Effects of CSI Knowledge on Secrecy of Threshold-Selection Decode-and-Forward Relaying

et al. 2017

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This paper considers secrecy of a three node cooperative wireless system in the presence of a passive eavesdropper. The threshold-selection decode-and-forward (DF) relay is considered, which can decode the source message correctly only if a predefined signal-to-noise ratio (SNR) is achieved. The effects of channel state information (CSI) availability on secrecy outage probability (SOP) and ergodic secrecy rate (ESR) are investigated, and closed-form expressions are derived. Diversity is achieved from the direct and relaying paths both at the destination and at the eavesdropper by combinations of maximalratio combining (MRC) and selection combining (SC) schemes. An asymptotic analysis is provided when each hop SNR is the same in the balanced case and when it is different in the unbalanced case. The analysis shows that both hops can be a bottleneck for secure communication; however, they do not affect the secrecy identically. While it is observed that CSI knowledge can improve secrecy, the amount of improvement for SOP is more when the required rate is low and for ESR when the operating SNR is also low. It is also shown that the source to eavesdropper link SNR is more crucial for secure communication.Index Terms-Channel state information, cooperative diversity, decode-and-forward relay, ergodic secrecy rate, secrecy outage probability, threshold-selection relay.This work was presented in part at the 2016 IEEE 84th Vehicular Technology Conference, Montreal, Canada.Chinmoy Kundu and Trung Q. Duong are with the

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Secrecy performance of dual‐hop decode‐and‐forward relay system with diversity combining at the eavesdropper

Cited by 24 publications

References 41 publications

Secure AF relaying with efficient partial relay selection scheme

Secure AF relaying with efficient partial relay selection scheme

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

Effects of CSI Knowledge on Secrecy of Threshold-Selection Decode-and-Forward Relaying

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