Relay-Selection Improves the Security-Reliability Trade-Off in Cognitive Radio Systems

Zou, Yulong; Champagne, Benoı̂t; Zhu, Wei-Ping; Hanzo, Lajos

doi:10.1109/tcomm.2014.2377239

Cited by 264 publications

(175 citation statements)

References 32 publications

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“…However, it was reported that most of the currently allocated spectrums were mainly underuitlized by licensed primary users (PUs) [2] . For this, an emerging technology-cognitive radio (CR), with which the secondary users (SUs) are able to detect the spectrum opportunity and access the vacant spectrum in an opportunistic way, has received much attention recently [3][4][5][6] .…”

Section: Introductionmentioning

confidence: 99%

Time-efficient cooperative spectrum sensing via analog computation over multiple-access channel

Zheng

Liang

et al. 2017

Computer Networks

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Section: Introductionmentioning

confidence: 99%

Time-efficient cooperative spectrum sensing via analog computation over multiple-access channel

Zheng

Liang

et al. 2017

Computer Networks

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“…In [4], the outage probability and the diversity order of CRNs with opportunistic relaying are analyzed for both Rayleigh and Nakagamim fading. More recently, in the presence of eavesdropper, the intercept probability and the outage probability of CRNs with single-relay and multi-relay selection schemes are analyzed in [5], wherein the security-reliability tradeoff is discussed in detail.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to the above works [3][4][5][6][7][8][9][10][11][12][13][14] that focus on dual-hop CRNs, a more general scenario of multihop CRNs is receiving more attention, since multihop relaying is an efficient strategy to save power, and improve connectivity or coverage. In [15], under the interference constraint from one PR, the outage performance of multihop CRNs with imperfect channel state information (CSI) over Nakagami-m fading is investigated.…”

Section: Introductionmentioning

confidence: 99%

Joint Spatial-Temporal Access Scheme for Multihop Cognitive Relay Networks Over Nakagami-m Fading

Zheng

Liang

et al. 2017

Wireless Pers Commun

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This paper investigates the cooperative multihop cognitive relay networks (CRNs) under a novel two-dimensional spatial-temporal opportunity model, in which free opportunity and sharing opportunity are defined to enhance the spectrum efficiency. Correspondingly, a joint spatial-temporal access scheme (JSTAS) is proposed to realize successive spectrum access for continuous data transmission. The multihop CRNs with fixed relaying employ decode-and-forward with and without signal-to-noise ratio selection, which are named as SDF and DF, respectively. Then, considering the interference constraints from multiple primary receivers, the interference of one primary transmitter and the maximum transmit powers of cognitive users, we study the outage performance of multihop CRNs with JSTAS over Nakagami-m fading. To comprehensively evaluate JSTAS, we further present the pure spatial access scheme (SAS) and the pure temporal access scheme (TAS) under the spatial-temporal opportunity model, and calculate their average network outage probabilities. Simulation results demonstrate that SDF outperforms DF, while JSTAS outperforms SAS and TAS under all considered scenarios.

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“…Nowadays, the researches of CRNPLS transmission scheme mainly focus on relay selection [10,11,12,13,14] and relay beamforming [15,16]. There is also some research work reported in Chinese journals [6,7,8,9].…”

Section: Introductionmentioning

confidence: 99%

“…Given that relay beamforming is an important method of PLS, this paper mainly researches the CRNPLS transmission problems based on relay beamforming. There is a pair of nodes and some relay nodes in the bibliographies [10,11,12,13,14], but they just select the best one of the relays to transmit signal. Although bibliographies [15,16] mainly concern about CRNPLS transmission schemes with multi-relay collaboration, they concern only the condition of a pair of secondary users.…”

Section: Introductionmentioning

confidence: 99%

Joint Beamforming and the Artificial Noise Security Scheme Based on Successive Convex Approximation in Multi-relay Cognitive Network

Xie¹,

Xie²,

Shu³

et al. 2017

Proceedings of the International Conference on Computer Networks and Communication Technology (CNCT 2016)

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Abstract. To solve the transmission problemof physical layer security(PLS) in relay cognitive radio network (CRN), this paper investigates the PLS transmission scheme of multiple relays CRN, which contains two pairs of secondary nodes without direct link each other. Compared with the model that consists ofa pair of secondary node users and a single relay in terms of theoretical analysis and optimization, the proposed scheme is more complicated. To maximizethe joint secret rate of the secondary users,power allocation of the twosecondarysource transmission node withbeamforming andartificial noise assist (PBNAS) is obtained. Furthermore, exploiting the semidefinite programming theory (SDR) and the successive convex approximation (SCA) method, the original complex nonconvex problem is transformed into a convex optimization problem, and the iterative procedure is summarized.Finally, the security transmission rate versus different number relays andrelays total power is simulated. The simulation results show that the security performance of the PBNAS scheme is the best.

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Relay-Selection Improves the Security-Reliability Trade-Off in Cognitive Radio Systems

Cited by 264 publications

References 32 publications

Time-efficient cooperative spectrum sensing via analog computation over multiple-access channel

Time-efficient cooperative spectrum sensing via analog computation over multiple-access channel

Joint Spatial-Temporal Access Scheme for Multihop Cognitive Relay Networks Over Nakagami-m Fading

Joint Beamforming and the Artificial Noise Security Scheme Based on Successive Convex Approximation in Multi-relay Cognitive Network

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