Secrecy Outage Analysis of Underlay Cognitive Radio Unit Over Nakagami- &lt;inline-formula&gt; &lt;tex-math notation="TeX"&gt;$m$&lt;/tex-math&gt;&lt;/inline-formula&gt; Fading Channels

Tang, Chaoqing; Pan, Gaofeng; Li, Tingting

doi:10.1109/lwc.2014.2350501

Cited by 79 publications

(31 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this model, we consider only one case as assumed in earlier system model of Network-A, which PU-TX is far away from the secondary nodes as in Tang, Pan, and Li's study. 2 So, interference from the PU-TX is negligible at each USAFR and at the SD. All other assumptions are the same as in the system model of Network-A.…”

Section: System Model Of Network-bmentioning

confidence: 99%

Secure communication in cognitive radio networks with untrusted AF relays

Sharma

Roy

Kundu

2019

Int J Communication

View full text Add to dashboard Cite

Summary In this paper, two underlay based cognitive cooperative radio networks, each with one secondary source (SS), one secondary destination (SD), N untrusted secondary amplify and forward relays (USAFRs), one primary transmitter, and one primary receiver (PU‐RX), are considered for evaluating the secrecy performance. The SS sends the information to the SD in two time slots via multiple USAFRs in the absence of direct link between SS and SD. In the first time slot, SS and SD transmit the message and jamming signal to multiple USAFRs, respectively. In the second slot, a selected USAFR amplifies and forwards the combined received signals to the SD. The transmit powers of the secondary nodes are chosen so as to maintain the overall interference at PU‐RX below a specified limit. The transmit power of a selected USAFR is derived using the harvested energy from the RF signals of SS and SD. Two network scenarios of eavesdropping by USAFRs are studied: in one case, all USAFRs eavesdrop; while in the second case, only the selected USAFR eavesdrops the message during forwarding of the signal and power is allocated to secondary nodes on the basis of outage threshold of primary network. We investigate the secrecy outage probability (SOP) in both of the networks under several physical parameters. Analytical framework for evaluating SOP for both the cases are given while SOP in single integration form is given for the second case. MATLAB simulation results are presented for both the cases.

show abstract

Section: System Model Of Network-bmentioning

confidence: 99%

Secure communication in cognitive radio networks with untrusted AF relays

Sharma

Roy

Kundu

2019

Int J Communication

View full text Add to dashboard Cite

show abstract

“…One is underlay spectrum sharing model and the other is overlay spectrum sharing model. In underlay spectrum sharing model, even if primary user (PU) is working, secondary user (SU) can transmit signal simultaneously under the licensed PU spectrum [2]. For underlay CR design, the interference from SUs' communication must be tolerable to PU.…”

Section: Introductionmentioning

confidence: 99%

Joint Beamforming and Power Splitting Design for Physical Layer Security in Cognitive SWIPT Decode-and-Forward Relay Networks

2020

KSII TIIS

View full text Add to dashboard Cite

In an underlay cognitive simultaneous wireless information and power transfer (SWIPT) network, communication from secondary user (SU) to secondary destination (SD) is accomplished with decode-and-forward (DF) relays. Multiple energy-constrained relays are assumed to harvest energy from SU via power splitting (PS) protocol and complete SU secure information transmission with beamforming. Hence, physical layer security (PLS) is investigated in cognitive SWIPT network. In order to interfere with eavesdropper and improve relay's energy efficiency, a destination-assisted jamming scheme is proposed. Namely, SD transmits artificial noise (AN) to interfere with eavesdropping, while jamming signal can also provide harvested energy to relays. Beamforming vector and power splitting ratio are jointly optimized with the objective of SU secrecy capacity maximization. We solve this non-convex optimization problem via a general two-stage procedure. Firstly, we obtain the optimal beamforming vector through semi-definite relaxation (SDR) method with a fixed power splitting ratio. Secondly, the best power splitting ratio can be obtained by one-dimensional search. We provide simulation results to verify the proposed solution. Simulation results show that the scheme achieves the maximum SD secrecy rate with appropriate selection of power splitting ratio, and the proposed scheme guarantees security in cognitive SWIPT networks.

show abstract

“…In [17], a hybrid visible light communication radio frequency (RF) system with legitimate receiver and an eavesdropper was considered where legitimate receiver can harvest energy from the light emitted by light-emitting diodes, and exact and asymptotic SOP was derived by using stochastic geometry method. The closed-form expressions for SOP and non-zero secrecy capacity for underlay CR unit over Nakagami-m fading were investigated in [18], and the secrecy outage performance of PU system in the presence of the eavesdropping and interfering of SU was analyzed in [19]. Generalizedselection combining (GSC) is a hybrid technique that overcomes the limitation of MRC and selection combining (SC).…”

Section: Introductionmentioning

confidence: 99%

Secrecy analysis of cognitive radio network with MS-GSC/MRC scheme

Thakur

Singh

2018

J Wireless Com Network

View full text Add to dashboard Cite

We propose and analyze minimum selection-generalized selection combining (MS-GSC) at secondary receiver (SR) with maximal ratio combining at eavesdropper (ER) to enhance data security at physical layer. We consider an underlay cognitive radio network (CRN) where SR and ER are equipped with multiple antennas, and secondary transmitter (ST) has single antenna with a primary user. Passive eavesdropping is also taken into account.This work is aimed to find the effect of MS-GSC diversity technique on secrecy outage probability (SOP). We derive a closed-form expressions for the exact and asymptotic SOP. Our results show a positive impact on SOP with an increase in diversity branches and also reveal the effect of a primary user on secondary network.

show abstract

Secrecy Outage Analysis of Underlay Cognitive Radio Unit Over Nakagami- <inline-formula> <tex-math notation="TeX">$m$</tex-math></inline-formula> Fading Channels

Cited by 79 publications

References 13 publications

Secure communication in cognitive radio networks with untrusted AF relays

Secure communication in cognitive radio networks with untrusted AF relays

Joint Beamforming and Power Splitting Design for Physical Layer Security in Cognitive SWIPT Decode-and-Forward Relay Networks

Secrecy analysis of cognitive radio network with MS-GSC/MRC scheme

Contact Info

Product

Resources

About