Physical Layer Secrecy Performance of Multi-hop Decode-and-Forward Relay Networks with Multiple Eavesdroppers

Tran, Duc-Dung; Vo, Nguyen-Son; Vo, Tan-Loc; Ha, Dac‐Binh

doi:10.1109/waina.2015.33

Cited by 14 publications

(18 citation statements)

References 11 publications

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“…We can interpret from (16) and (17) that secrecy outage probability is inversely proportional to 1/β and it tends to zero, when main channel SNR (1/β) tends to infinity. It is directly proportional to the required threshold γ th , eavesdropper channel SNR (1/α rie ), and desired secrecy rate R s .…”

Section: Csi Completely Known At Transmittermentioning

confidence: 99%

“…The optimal routing policy that minimizes the cost with secrecy outage probability constraint over multi-hop fading wiretap networks is discussed in [16]. Authors in [17] have investigated physical layer secrecy performance of multi-hop decodeand-forward relay networks with multiple passive eavesdroppers over Nakagami-m fading channels. Cooperative multicast scheme which allows the users to function as relays is presented in [18], and the secure outage behavior of this scheme is studied.…”

Section: Introductionmentioning

confidence: 99%

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Secrecy outage of threshold-based cooperative relay network with and without direct links

Chopra

Bose

Joshi

2018

EURASIP J. on Info. Security

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In this paper, we investigate the secrecy outage performance of a dual-hop decode-and-forward (DF) threshold-based cooperative relay network, both with and without the direct links between source-eavesdropper and source-destination. Without assuming that all the relays can always perfectly decode, here we consider that only those relays who satisfy predetermined threshold can correctly decode the message. We have investigated the outage probability of optimal relay selection scheme, when either full instantaneous channel state information (ICSI) or statistical channel state information (SCSI) of all the links is available. We have shown that CSI knowledge at the transmitter can improve secrecy, and the amount of improvement for the outage probability is more when the required rate is low and for low operating SNR. Asymptotic and diversity gain analysis of the secrecy outage for both the single relay and multi-relay system is obtained, when average SNRs of source-relay and relay-destination links are equal or unequal. We have shown that the improvement in predetermined threshold, eavesdropper channel quality, direct links, and required secrecy rate significantly affects the secrecy performance of the system.

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Section: Csi Completely Known At Transmittermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Secrecy outage of threshold-based cooperative relay network with and without direct links

Chopra

Bose

Joshi

2018

EURASIP J. on Info. Security

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show abstract

“…In other words, the additional communication links from the source to relays can improve the system' coverage and throughput [11][12], however eavesdropping can also take place over these relaying links. Therefore, the security of the wireless cooperative/relay systems attracts more and more researchers' interests [13][14][15][16][17][18][19][20][21][22][23][24]. Several cooperation strategies were considered in [13] to derive the optimal rate-equivocation region for four-terminal relay-eavesdropper channel.…”

Section: Introductionmentioning

confidence: 99%

“…The influence of SWIPT at the relay on the outage of A dual-hop DF system was investigated in [19]. In [20], the authors studied the physical layer secrecy performance of multi-hop DF relay network was investigated in the presence of multiple passive eavesdroppers over Nakagami-m fading channels. For time-division multiple-access based DF cooperative protocols, the authors of [21] analyzed achievable secrecy rates with total and individual relay power constraints and design relay beamforming weights to improve the secrecy rate.…”

Section: Introductionmentioning

confidence: 99%

Secure source-relay link based threshold DF relaying scheme

Jin¹,

Jia

Wang

et al. 2018

AEU - International Journal of Electronics and Communications

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In this work, a dual-hop cooperative system, in which there are a Source-Destination (S-D) pair, a relay node (R) and an eavesdropper (E), which attempts to eavesdrop the confidential message sent by S and forwarded by R, is considered. In order to enhance the system performance and save the system resource, we propose an S − R link based threshold decode-and-forward (DF) relaying scheme for R to decide whether to aid S-D pair's information transmission or not, other than the traditional DF relaying scheme. The secrecy outage performance of the considered system is investigated and the closed-form analytical expression for secrecy outage probability is derived and verified via Monte-Carlo simulations.

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“…To increase the spectral efficiency and energy efficiency of the system, a cooperative multi-hop communication protocol with spatial reuse is proposed in [12], in which interference is treated as noise or can be canceled. Very recently, the physical layer secrecy performance of multi-hop DF relay network with multiple passive eavesdroppers in [13] is investigated over Nakagami-m fading channels and the exact closed-form expressions of existence probability of secrecy capacity and secrecy outage probability are obtained by using statistical characteristics of signal-to-noise ratio.…”

Section: Introductionmentioning

confidence: 99%

Outage Performance of Cognitive Multi-Hop Network under Interference Constraints over Nakagami-m Fading

Guo¹,

Ji²,

Wang³

2016

JCM

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The outage performance of multi-hop cooperative spectrum sharing systems with interference constraints over Nakagami-m fading is investigated. Employing a Decode-and-Forward (DF) relaying protocol, the closed-form analytic expression is derived for the Outage Probability (OP), which is validated through comparison with results from Monte-Carlo simulations. In addition, the corresponding asymptotic performance for the maximum transmit power is investigated as well. The obtained expressions provide useful insights on the behavior of the system performance under different operation parameters. Numerical results reveal that the system performance degrades as the number of relays increases, the relationship between the interference constraints and maximum transmits power leads to the emergence of the outage error floor. In addition, we compare the effectiveness of the interference link channel quality and the transmission link channel quality on the system performance improvement. Our results show that good performance of the system relies on the improvement of transmission links deeper than that of the interference links. However, the performance improvement of the overall system comes from good channel quality of all the links. Moreover, the presented results also demonstrate that underlay multi-hop cognitive networks depends on numerous factors and differs substantially from that of traditional multi-hop networks.Index Terms-Cognitive relaying system, decode-and-forward, multi-hop communications, outage probability, Nakagami-m fading Manuscript

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Physical Layer Secrecy Performance of Multi-hop Decode-and-Forward Relay Networks with Multiple Eavesdroppers

Cited by 14 publications

References 11 publications

Secrecy outage of threshold-based cooperative relay network with and without direct links

Secrecy outage of threshold-based cooperative relay network with and without direct links

Secure source-relay link based threshold DF relaying scheme

Outage Performance of Cognitive Multi-Hop Network under Interference Constraints over Nakagami-m Fading

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