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

Thakur, Shilpa; Singh, Ajay

doi:10.1186/s13638-018-1100-y

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…The equation can be further simplified into 8

P_{o u t a g e} = true \int_{0}^{\infty} true \int_{0}^{\infty} F_{γ m a i n false(X = x false)} false(\in γ_{h} false) f_{γ_{e v e false| false(X = x false)}} false(γ_{h} false) f_{x} false(x false) d γ_{h} d x,

where F γmain ( X = x ) (∈ γ h ) is the CDF of γ h conditioned on x and the power gain between ST x and PU is represented by X . Further, ∈ γ h =2 R s (1+ γ h )−1, f x ( x ) is PDF conditioned on x , and

f_{γ_{e v e false| false(X = x false)}} false(γ_{h} false)

is the PDF of γ eve conditioned on x .…”

Section: Secrecy Outage Probabilitymentioning

confidence: 99%

“…The eavesdropper is a malicious node that intercepts the data transmission of legitimate user 7 . The main aim of physical layer security is to increase the gain of legitimate SU receiver's channel as compared with the eavesdropper's channel to acquire perfect secrecy 8 . The physical layer security work was firstly carried out by Shannon 9 and was further extended by Wyner 10 in which the secrecy capacity was derived in contest of information theory.…”

Section: Introductionmentioning

confidence: 99%

“…7 The main aim of physical layer security is to increase the gain of legitimate SU receiver's channel as compared with the eavesdropper's channel to acquire perfect secrecy. 8 The physical layer security work was firstly carried out by Shannon 9 and was further extended by Wyner 10 in which the secrecy capacity was derived in contest of information theory. The secrecy capacity was defined as the difference between main channel's and wiretap channel's capacity (also known as eavesdroppers link) .The security of the system is compromised if the capacity of eavesdroppers channel is more than the main channel, and this event is known as intercept event.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Secrecy outage performance analysis of MIMO underlay cognitive radio networks with delayed CSI and transmitter antenna selection

Thakur

Kumar

Gupta

et al. 2019

Int J Communication

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Cognitive radio network is an emerging solution to deal with spectrum scarcity and to utilize the radio spectrum in opportunistic and efficient manner.Secure data transmission is one of the important issues in these kind of networks. This work studies the secrecy outage performance of a multiple-input multiple-output underlay cognitive wiretap radio network system over Rayleigh fading channel with delayed channel state information. This work considers that the secondary transmitter is equipped with multiple antennas and confidential information is transmitted from to multiantenna receiver in the presence of multiantenna eavesdropper. Further, the transmit antenna selection scheme is considered at secondary transmitter to reduce the complexity of antenna selection and to make it more practicable. To improve the quality of signal, this work considers maximal ratio combining (MRC) at secondary receiver, while selection combining and MRC techniques are utilized at the eavesdropper. The closed form expression for exact, asymptotic, and intercept secrecy outage probability has been derived, and the simulation is done for the validation of analytical results. The derived results reveal deterioration of channel secrecy performance with outdated channel state information, and the eavesdropper with outdated channel state information has also an adverse effect. Moreover, the diversity order that can be achieved in underlay cognitive radio network with outdated channel state information is unity.

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“…The equation can be further simplified into 8