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International Conference on Electrical Information and Communication Technology (EICT)

Enhancement of Physical Layer Security over Generalized Nakagami-mmm Fading Multicast Channel

Sarjana Shabab, A. S. M. Badrudduza, Milton Kumar Kundu

Published Dec 1, 2019• 6 citations
Publisher

Abstract

Multicasting over wireless channels is a challenging task now-a-days as conventional frameworks can not ensure the secrecy of transmitted information. Hence, in this paper, a secure multicast framework is presented over Generalized Nakagami-m fading channel in the appearance of multiple eavesdroppers and key concentration is given to the transmission of information at a secrecy rate so that no eavesdropper can decode any information from the multicast channels. The impact of the system parameters on the secrecy performance of proposed system is analyzed by obtaining closed-from mathematical expressions of some secrecy measures such as probability of nonzero secrecy multicast capacity and secure outage probability for multicasting. The generalization of the proposed model is achieved by obtaining Rayleigh, Nakagami- m, Gamma, Half-normal, Weibull, Exponential, etc. fading channels as a special case of Generalized Nakagami- m fading channel. Finally, the correctness of the derived expressions is authorized using Monte-Carlo simulations.

DOI
10.1109/eict48899.2019.9068783

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Multicasting over wireless channels is a challenging task now-a-days as conventional frameworks can not ensure the secrecy of transmitted information. Hence, in this paper, a secure multicast framework is presented over Generalized Nakagami-m fading channel in the appearance of multiple eavesdroppers and key concentration is given to the transmission of information at a secrecy rate so that no eavesdropper can decode any information from the multicast channels. The impact of the system parameters on the secrecy performance of proposed system is analyzed by obtaining closed-from mathematical expressions of some secrecy measures such as probability of nonzero secrecy multicast capacity and secure outage probability for multicasting. The generalization of the proposed model is achieved by obtaining Rayleigh, Nakagami- m, Gamma, Half-normal, Weibull, Exponential, etc. fading channels as a special case of Generalized Nakagami- m fading channel. Finally, the correctness of the derived expressions is authorized using Monte-Carlo simulations.
The confidentiality of wireless multicast network is notably compromised by the concurrent existence of shadowing and fading. To overcome this security threat, mathematical modeling of a multicast scenario is proposed in this paper over κ-μ/ inverse gamma (IG) composite fading channel where transmitted confidential information from source is under malicious attack of multiple eavesdroppers. The well-known physical layer security approach is adopted to analyze the impact of system parameters on secrecy performance in terms of novel expressions of secure outage probability for multicasting, probability of nonzero secrecy multicast capacity and ergodic secrecy multicast capacity. The generalization of security analysis is achieved by demonstrating Rayleigh, Rician, Nakagami-m, κ-μ fading and Gaussian channels as a special scenarios of κ-μ/IG distribution. At the end, analytical results are justified by performing Monte-Carlo Simulations.
In this paper, a secure wireless multicast network over k - μ fading channel is considered, where a source transmits secret information to a group of receivers. A group of eavesdroppers are also present in the network which are responsible for wiretapping the transmitted information. A perfect secrecy can be obtained if the eavesdroppers are not able to decode any information from the source. In order to investigate the secrecy capacity of the multicast network, at first a novel expression for Ergodic secrecy multicast capacity is derived in closed-form. The outage performance of the proposed network is analyzed obtaining the closed-form expressions of secure outage probability for multicasting. The effects of fading is determined and a beneficent insight is provided into investigating the secrecy performance of some other common fading scenarios such as Rician, Rayleigh, Nakagami-m, Gaussian etc. using the derived novel expressions of this paper. Monte-Carlo simulations are performed to validate the derived analytical expressions.
A confidential multicasting scenario is considered through Nakagami-q fading channels in the presence of multiple eavesdroppers. We are interested to protect the confidential information so that no eavesdropper can decode any information from the multicast channels. A mathematical model is developed which consists of the closed-form analytical expressions for the ergodic secrecy multicast capacity and the secure outage probability for multicasting to ensure this security. Some numerical results are shown to justify the validity of the developed mathematical model. Moreover, the analytical expressions are verified via Monte-Carlo simulation.
The issue of wireless security in Generalized gamma fading is considered in this paper with multiple eavesdropper present in the system. The analysis of security is performed based on the investigation of the parametric effects of Generalized gamma fading channel. The expressions for the measures of the security such as probability of positive secrecy capacity and the secure outage probability are derived in closed-form to facilitate the investigation of that parametric effects. Our results illustrates that the analysis of security in Generalized gamma fading channels introduces a conclusion about the effects of fading parameters in the security of Weibull, Rayleigh and Nakagami-m fading channels. Finally, the analytical results are verified via Monte-Carlo simulation.
Secrecy performance of realistic wireless multicast scenarios are significantly deteriorated by simultaneous occurrence of multipath and shadowing which are modeled using composite fading channels. To resolve this security threat, in this paper a framework is proposed where a source transmits private multicast messages to multiple receivers over η - μ / inverse gamma composite fading channels. A group of eavesdroppers are trying to overhear this secret communication. Perfect secrecy is obtained if eavesdropper can not decode any information from the multicast links. Secrecy analysis is carried out deriving closed-form expressions of two well-known secrecy measures i.e. probability of non-zero secrecy capacity and secure outage probability for multicasting. The impacts of multipath, shadowing and other system parameters on the outage performance of the proposed scenario are quantified using the derived expressions. A generic nature of η - μ / inverse gamma distribution is obtained by showing Rayleigh, Nakagami-m, Nakagami-q, η - μ fading and Gaussian channels as a special case of this distribution. Finally, Monte-Carlo simulations are presented to verify the derived expressions.
This paper illustrates a secure multicast scenario over k- μ shadowed fading channel in the appearance of multiple eavesdroppers. In order to achieve perfect secrecy, it must be ensured that no eavesdropper can decipher any transmitted information from the multicast channels. The secrecy analysis incorporates deriving mathematical expressions for two secrecy matrices such as the ergodic secrecy multicast capacity and the secure outage probability for multicasting. It is observed that proposed k - μ shadowed model unifies secrecy analysis of some well-known classical fading models and the derived expressions can help to quantify the significant impact of shadowing as-well-as other system parameters on secrecy performance. Finally, a close match between the analytical and Monte-Carlo simulation results is shown which validates the correctness of the derived expressions.