Secrecy Capacity of the Primary System in a Cognitive Radio Network

Nguyen, Van‐Dinh; Hoang, Tiep M.; Shin, Oh‐Soon

doi:10.1109/tvt.2014.2359246

Cited by 30 publications

(40 citation statements)

References 19 publications

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“…However, in [8], the impact of multipath fading was neglected. In [9], the secrecy D. S. Karas capacity was investigated for a cognitive radio system with security based on artificial noise, assuming full channel state information (CSI) knowledge for the legitimate RX's channel, and partial CSI for the eavesdropper's channel. Finally, the impact of interference on multi-user scheduling transmission schemes was investigated in [10] and [11].…”

Section: Introductionmentioning

confidence: 99%

Physical Layer Security in the Presence of Interference

Karas

Boulogeorgos

Karagiannidis

et al. 2017

IEEE Wireless Commun. Lett.

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We evaluate and quantify the joint effect of fading and multiple interferers on the physical-layer (PHY) security of a system consisted of a base-station (BS), a legitimate user, and an eavesdropper. To this end, we present a novel closed-form expression for the secrecy outage probability, which takes into account the fading characteristics of the wireless environment, the location and the number of interferers, as well as the transmission power of the BS and the interference. The results reveal that the impact of interference should be seriously taken into account in the design and deployment of a wireless system with PHY security.Index Terms-Interference, Secrecy Outage Probability, Physical layer security.

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Section: Introductionmentioning

confidence: 99%

Physical Layer Security in the Presence of Interference

Karas

Boulogeorgos

Karagiannidis

et al. 2017

IEEE Wireless Commun. Lett.

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“…Accordingly, PHY security for CRNs has been investigated in [10]- [14]. In [10], [11], multi-antennas at the secondary transmitter were utilized to realize a beamforming that maximizes the secrecy capacity of secondary system while satisfying a peak interference constraint at the primary receiver.…”

Section: Introductionmentioning

confidence: 99%

“…Cooperation between the secondary system and the primary system was proposed to improve the secrecy capacity of the primary system in [12]. A simple case with single antenna at eavesdropper was considered in [13], [14]. In [13], a joint beamforming for information and jamming noise was proposed to protect both the primary system and the secondary system, where the secondary system acts as amplify-forward relaying the information of the primary system.…”

Section: Introductionmentioning

confidence: 99%

“…In [13], a joint beamforming for information and jamming noise was proposed to protect both the primary system and the secondary system, where the secondary system acts as amplify-forward relaying the information of the primary system. A beamforming for jamming noise based on null-space at primary receiver under multiple antennas at primary transmitter was proposed to protect the primary system by treating the signal from the secondary transmitter as interference [14].…”

Section: Introductionmentioning

confidence: 99%

“…The assumption is reasonable in practice, when the data from the primary system is more attractive to the eavesdropper than the data from the secondary system [12]- [14]. We assume that the primary transmitter has only one antenna, which implies that the primary transmitter cannot generate a jamming signal to protect itself from eavesdropper.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Physical Layer Security for Primary System: A Symbiotic Approach in Cooperative Cognitive Radio Networks

Nguyen¹,

Duong²,

Shin³

2014

2015 IEEE Global Communications Conference (GLOBECOM)

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In this paper, we proposed a symbiotic approach for a secure primary network by allowing the secondary users to send the jamming noise to degrade the wiretap ability of the eavesdropper. In particular, assuming that the global channel state information is perfectly known at tranceivers, we consider the case of the primary transmitter equipped with only one antenna, which implies that the primary transmitter does not have beamforming capability. As the reward of having access to the frequency spectrum which is licensed by the the primary user, the secondary transmitter will assist the primary systems in terms of security by sending the jamming noise to the eavesdropper. We propose an algorithm to find the optimal transmit power for maximizing the secrecy capacity of the primary system. Numerical results are presented to validate our proposed scheme.

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