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International Conference on Robotics, Electrical and Signal Processing Techniques (ICREST)

On the Enhancement of Secrecy Multicast Capacity over Κ - μ/IG Composite Fading Channel

Md. Shakhawat Hossen, A. S. M. Badrudduza, Abu Hanif, Milton Kumar Kundu, Md. Firoz Mahmud, Md. Zahurul I. Sarkar

Published Jan 5, 2021• 2 citations
Publisher

Abstract

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.

DOI
10.1109/icrest51555.2021.9331252

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•Jun 16, 2021•0 citations
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.
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.
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.
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.
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 importance of secrecy performance in multicast wireless networks has become paramount as 6 G networks are driving a surge in demand for secure and efficient communication across various applications. To address this challenge, this paper introduces a novel multicast network based on composite Nakagami-Gamma distribution channels, which effectively captures both small- and large-scale fading. Assume that multiple eavesdroppers are attempting to intercept confidential information from the source. To assess secrecy performnce, the analytical expressions for secrecy outage probability for multicasting, probability of non-zero secrecy multicast capacity, and effective secrecy throughput for multicasting are derived in terms of Meijer’s G\mathbf{G}G function. Numerical results demonstrate that despite the detrimental effect of multiple receivers on secrecy performance, the proposed model can be secured by reducing the severity of fading in the main channel link. Finally, Monte Carlo simulations are employed to verify the accuracy of the analytical results.
The secrecy of wireless multicast networks is greatly hampered due to the simultaneous presence of fading and shadowing, which can be enhanced using random attributes of the propagation medium. This work focuses on utilizing those attributes to enhance the physical layer security (PHY security) performance of a dual-hop wireless multicast network over kappa-mu shadowed fading channel under the wiretapping attempts of multiple eavesdroppers. In order to raise the secrecy level, we employ multiple relays with the best relay selection strategy. Performance analysis has been carried out based on the mathematical modeling in terms of closed-form expressions of the probability of non-zero secrecy multicast capacity, secure outage probability for multicasting, and ergodic secrecy multicast capacity. Capitalizing on those expressions, we analyze how the system parameters (i.e. fading, shadowing, the number of antennas, destination receivers, eavesdroppers, and relays) affect the secrecy performance. Our numerical results show that the detrimental impacts due to fading and shadowing can be remarkably mitigated using the well-known opportunistic relaying technique. Moreover, the proposed model unifies secrecy analysis of several classical models, thereby exhibits enormous versatility than the existing works. Finally, all the numerical results are authenticated utilizing Monte-Carlo simulations.