Relay Selection for Security-Constrained Cooperative Communication in the Presence of Eavesdropper's Overhearing and Interference

Vahidian, Saeed; Aı̈ssa, Sonia; Hatamnia, Sajad

doi:10.1109/lwc.2015.2466678

Cited by 31 publications

(26 citation statements)

References 9 publications

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“…This is shown by the dashed line on the top of the figure which is the SOP of the wiretap channel evaluated in (24). When γ th → 0, i.e., R always decodes the message correctly, the SOP also saturates to a fixed value shown by the dashed line at the bottom of the figure, evaluated from (22).…”

Section: Numerical and Simulation Resultsmentioning

confidence: 98%

“…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%

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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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Section: Numerical and Simulation Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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

et al. 2017

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“…interferers share the same bands with D and E and cause interferences to them. It can be observed that the system model is practical and can be applied to practical scenarios [28][29][30]. It is assume that all nodes are equipped with single antenna and all channels are Rayleigh fading.…”

Section: System Model Descriptionmentioning

confidence: 99%

Security‐Reliability Tradeoff Analysis in Multisource Multirelay Cooperative Networks with Multiple Cochannel Interferers

2018

Wireless Communications and Mobile Computing

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Cooperative relaying communication is one of the green communication technologies since it shortens the communication distance and saves the transmit power. In this paper, the physical-layer security (PLS) of a multisource multirelay cooperative relaying communication network is investigated by considering the influence of cochannel interference from a security-reliability tradeoff (SRT) perspective. First, the SRT performance is characterized by the outage probability (OP) and the intercept probability (IP). In particular, the IP encountered at the eavesdropper is used to evaluate the security performance, while the reliability performance is analyzed in terms of the OP experienced at the destination. Then, under the impact of multiple cochannel interferers, the intercept probabilities and the outage probabilities of both the conventional direct transmission (DT) strategy and relay selection (RS) strategy are derived in closed-form expressions over Rayleigh fading channels, respectively. Simulation results are provided to validate the theoretical analysis. It is shown that when the OP (reliability) requirement is relaxed, the IP (security) performance improves and vice versa. It confirms that there is an SRT existing between the OP and the IP. Meanwhile, a better SRT performance can be achieved by increasing the number of sources, relays, and cochannel interferers. In addition, it is also shown that the RS strategy generally outperforms the conventional DT strategy in terms of the product of the IP and the OP.

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“…A survey of recent progress in this field can be found in [1], [25]. Security aspects of network coding is studied in references like [2], [19], [28]. In this paper, we will study the security of LT coding-based caching technique.…”

Section: Related Workmentioning

confidence: 99%

A Secure Approach for Caching Contents in Wireless Ad Hoc Networks

Kiskani

Sadjadpour

2017

IEEE Trans. Veh. Technol.

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Caching aims to store data locally in some nodes within the network to be able to retrieve the contents in shorter time periods. However, caching in the network did not always consider secure storage (due to the compromise between time performance and security). In this paper, a novel decentralized secure coded caching approach is proposed. In this solution, nodes only transmit coded files to avoid eavesdropper wiretappings and protect the user contents. In this technique random vectors are used to combine the contents using XOR operation. We modeled the proposed coded caching scheme by a Shannon cipher system to show that coded caching achieves asymptotic perfect secrecy. The proposed coded caching scheme significantly simplifies the routing protocol in cached networks while it reduces overcaching and achieves a higher throughput capacity compared to uncoded caching in reactive routing. It is shown that with the proposed coded caching scheme any content can be retrieved by selecting a random path while achieving asymptotic optimum solution. We have also studied the cache hit probability and shown that the coded cache hit probability is significantly higher than uncoded caching. A secure caching update algorithm is also presented.

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Relay Selection for Security-Constrained Cooperative Communication in the Presence of Eavesdropper's Overhearing and Interference

Cited by 31 publications

References 9 publications

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

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

Security‐Reliability Tradeoff Analysis in Multisource Multirelay Cooperative Networks with Multiple Cochannel Interferers

A Secure Approach for Caching Contents in Wireless Ad Hoc Networks

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