Security Enhancement of Cooperative Single Carrier Systems

Wang, Lifeng; Kim, Kyeong Jin; Duong, Trung Q.; Elkashlan, Maged; Poor, H. Vincent

doi:10.1109/tifs.2014.2360437

Cited by 83 publications

(75 citation statements)

References 36 publications

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“…It is highlighting that this configuration has numerous practical applications, for instance, in wireless sensor networks (WSN) where the multiantenna nodes convey information via a mobile relay that is restricted to a single antenna due to cost and size limitations, or in device-to-device (D2D) communications scenarios where the relay assists two multi-antenna devices to exchange messages [36]- [42]. Moreover, we follow the similar scenario in [15], [16], [20], [29]- [33], where both of the direct links A → B and A → E are assumed to be nonexistent, due to the direct links may be blocked by an obstruction or suffer from severe shadow fading. By this way, the transmission in the first hop cannot be overheard by Eves.…”

Section: Notationmentioning

confidence: 99%

“…(3.351.1) and (3.351.2)], the desired expressions can be easily obtained as in (29) for both eavesdropping modes.…”

Section: Appendix B Proof Of Corollarymentioning

confidence: 99%

“…In [16], two novel opportunistic relay selection techniques incorporating the quality of the relayeavesdropper links were investigated for DF cooperative relay networks. More recently, the security of cooperative single carrier systems with multiple relays and multiple destinations was examined in [17], where a two-stage relay and destination selection scheme was proposed. Besides, in [18], PLS in DF relaying cooperative wireless networks was studied, where the cooperative nodes can be assigned as either jammers or relays in an attempt to minimize the secrecy outage probability.…”

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confidence: 99%

“…The key difference between SEC and SECps scheduling schemes is that SEC scheme selects any branch randomly when no acceptable one is found after examining all the legitimate links, whereas the best branch is selected in the SECps scheme, which guarantees the secrecy performance particularly for the case when the switching threshold is a high value. Noteworthy, in some practical scenarios, the legitimate users and eavesdroppers may be far away from the BS or in a deep shadow fading environment [29]- [33]. Therefore, it is of importance to seek the assistance of a trusted cooperative relay to perform the complete transmission.…”

mentioning

confidence: 99%

“…Different from the high SNR assumption [15], [16] or perfect decoding [17], [18] at the relay, we follow a similar consideration as in [20] and take into account the impact of the quality of the first hop on the secrecy rate. Therefore, the secrecy capacity of dual-hop DF relay system C s is given by [20] …”

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confidence: 99%

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Secure Multiuser Scheduling in Downlink Dual-Hop Regenerative Relay Networks Over Nakagami- $m$ Fading Channels

Yang

Guo

Huang

et al. 2016

IEEE Trans. Wireless Commun.

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Abstract-In this paper, we investigate the secrecy performance of multiuser dual-hop relay networks where a base station (BS) communicates with multiple legitimate users via the assistance of a trustful regenerative relay in the presence of multiple eavesdroppers. Particularly, the maximal ratio transmission (MRT) scheme is exploited at the BS and a threshold-based multiuser scheduling scheme is employed over the legitimate users, while concerning the imperfect decoding at the regenerative relay. To evaluate the secrecy performance of the considered system, two practical situations are addressed based on the availability of eavesdropper's channel state information (CSI), i.e., Scenario I, where the eavesdropper's CSI is not available at the relay, and Scenario II, where the eavesdropper's CSI is available at the relay. For both scenarios, we further consider two eavesdropping modes, i.e., colluding eavesdropping and non-colluding eavesdropping. For Scenario I, new exact and asymptotic closed-form expressions of the secrecy outage probability (SOP) are derived. For Scenario II, we derive new exact and asymptotic closedform expressions of ergodic secrecy rate (ESR). The asymptotic SOPs demonstrate that the secrecy diversity order is independent of the number of legitimate users NB and eavesdroppers NE, the number of antennas equipped at eavesdroppers AE as well as fading factor of the wiretap channel mE. Furthermore, we also determine the secrecy multiplexing gain and the power cost to explicitly quantify the impact of the legitimate channel and wiretap channel on ergodic secrecy rate. Our findings demonstrate that increasing the switching threshold, the number of antennas at the BS, and the number of legitimate users have a positive impact on secrecy performance.Index Terms-Physical layer security, cooperative relay, multiuser diversity, threshold-based scheduling scheme, secrecy outage probability, ergodic secrecy rate.

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Section: Notationmentioning

confidence: 99%

“…(3.351.1) and (3.351.2)], the desired expressions can be easily obtained as in (29) for both eavesdropping modes.…”

Section: Appendix B Proof Of Corollarymentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

See 3 more Smart Citations

Secure Multiuser Scheduling in Downlink Dual-Hop Regenerative Relay Networks Over Nakagami- $m$ Fading Channels

Yang

Guo

Huang

et al. 2016

IEEE Trans. Wireless Commun.

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Secrecy performance of a generalized partial relay selection protocol in underlay cognitive networks

Tran

Choi

2018

Int J Communication

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Summary In this, we propose a generalized partial relay selection (PRS) protocol to enhance the secrecy performance for cooperative cognitive radio networks (CRNs) in terms of the secrecy outage probability (SOP) and the probability of non‐zero secrecy capacity (NSC). In the proposed scheme, a secondary source communicates with a secondary destination via the assistance of multiple secondary relays, in the presence of multiple secondary eavesdroppers and multiple primary users (PUs). With a reliance on the source‐relay channel state information (CSI), the source selects a group of the potential relays, and one is then chosen to forward the source data to the secondary destination using the randomize‐and‐forward (RF) technique. We consider the relay selection methods in two practical cases, where the CSIs of the eavesdropping links are available or not available. For the performance evaluation and comparison, we derived exact and asymptotic SOP and NSC closed‐form expressions for the proposed protocols and the corresponding full relay selection (FRS) protocol over Rayleigh‐fading channels. Finally, Monte Carlo simulations are presented to confirm the theoretical‐derivation correction. The results confirmed that the proposed protocols can outperform the conventional PRS protocols by designing the number of the potential relays appropriately.

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Secrecy Outage Probability of Cognitive Small-Cell Network with Unreliable Backhaul Connections

Zhang

Kundu

Garcia-Palacios

2019

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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In this paper, we investigate the secrecy performance of underlay cognitive small-cell radio network with unreliable backhaul connections. The secondary cognitive small-cell transmitters are connected to macro base station by wireless backhaul links. The small-cell network is sharing the same spectrum with the primary network ensuring that a desired outage probability constraint in the primary network is always satisfied. We propose an optimal transmitter selection (OTS) scheme for small-cell network to transfer information to the destination. The closed-form expression of secrecy outage probability are derived. Our result shows that increasing the primary transmitter's transmit power and the number of small-cell transmitter can improve the system performance. The backhaul reliability of secondary and the desired outage probability of the primary also have significant impact on the system.

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Security Enhancement of Cooperative Single Carrier Systems

Cited by 83 publications

References 36 publications

Secure Multiuser Scheduling in Downlink Dual-Hop Regenerative Relay Networks Over Nakagami- $m$ Fading Channels

Secure Multiuser Scheduling in Downlink Dual-Hop Regenerative Relay Networks Over Nakagami- $m$ Fading Channels

Secrecy performance of a generalized partial relay selection protocol in underlay cognitive networks

Secrecy Outage Probability of Cognitive Small-Cell Network with Unreliable Backhaul Connections

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