With the growing importance of security in advanced communication systems, researchers are exploring innovative strategies to enhance the performance of next-generation wireless networks. This paper proposes a relay-based dual-hop network operating over composite Rayleigh-Gamma fading channels, designed to enhance security against eavesdropping attacks. We derive novel analytical expressions for the secrecy outage probability in terms of Meijer’s G and Fox’s H functions to evaluate the secrecy performance. To validate the analytical results, Monte Carlo simulation is performed. The numerical analysis demonstrates that system security improves significantly with higher fading parameters and reduced path loss in the main communication channel. However, the system’s vulnerability increases as the fading parameter of the eavesdropping channel grows, highlighting the critical interplay between channel conditions and security performance.
With the growing importance of security in advanced communication systems, researchers are exploring innovative strategies to enhance the performance of next-generation wireless networks. This paper proposes a relay-based dual-hop network operating over composite Rayleigh-Gamma fading channels, designed to enhance security against eavesdropping attacks. We derive novel analytical expressions for the secrecy outage probability in terms of Meijer’s G and Fox’s H functions to evaluate the secrecy performance. To validate the analytical results, Monte Carlo simulation is performed. The numerical analysis demonstrates that system security improves significantly with higher fading parameters and reduced path loss in the main communication channel. However, the system’s vulnerability increases as the fading parameter of the eavesdropping channel grows, highlighting the critical interplay between channel conditions and security performance.
Wireless communication systems are vulnerable to eavesdropping attack in which the attacker overhear the transmitted data in the network. Hence, the physical-layer security is of utmost importance to protect the wireless communications against the eavesdropping attack. In this paper, we study the physical-layer security of a two-hops cognitive radio-based communication system where the secondary user sends some confidential information to a destination through a relay. This relay is assumed to be equipped with multiple antennas for reception, applies the maximum-ratio combining technique for the received signals, and uses only one antenna to forward the combined signal to the destination. The transmission is performed under the eavesdropper's attempt to listen to the communication channel. The secrecy outage probability and the intercept probability are both derived based on the statistical characteristics of the channels and under the constraint of avoiding the communication outage of the primary user. All results have been validated using Monte Carlo method.
This paper examines the secure performance of a composite Rayleigh-gamma fading channel when an eavesdropper is present in the channel. The aim of this work is to investigate the effect of gamma shadowing incorporating Rayleigh fading for the analysis of security in wireless communication networks in terms of probability of non-zero secrecy capacity (PNZSC) and secure outage probability (SOP). The analysis demonstrates that the shadowing effect substantially improves the security of the proposed model. Furthermore, Monte-Carlo simulations are carried out to confirm the accuracy of the theoretical findings.
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 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.
Through ordinary transmissions over wireless multicast networks are greatly hampered due to the simultaneous presence of fading and shadowing of wireless channels, secure transmissions can be enhanced by properly exploiting random attributes of the propagation medium. This study focuses on the utilization of those attributes to enhance the physical layer security (PLS) performance of a dual-hop wireless multicast network over κ - μ shadow-fading channel under the wiretapping attempts of multiple eavesdroppers. In order to improve the secrecy level, the best relay selection strategy among multiple relays is employed. Performance analysis is carried out based on the mathematical modeling in terms of analytical expressions of non-zero secrecy capacity probability, secure outage probability, and ergodic secrecy capacity over multicast relay networks. Capitalizing on those expressions, the effects of system parameters, i.e., fading, shadowing, the number of antennas, destination receivers, eavesdroppers, and relays, on the secrecy performance are investigated. Numerical results show that the detrimental impacts caused by 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 exhibiting enormous versatility than the existing works.
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.
Through ordinary transmissions over wireless multicast networks are greatly hampered due to the simultaneous presence of fading and shadowing of wireless channels, secure transmissions can be enhanced by properly exploiting random attributes of the propagation medium. This study focuses on the utilization of those attributes to enhance the physical layer security (PLS) performance of a dual-hop wireless multicast network over kappa-mu shadow-fading channel under the wiretapping attempts of multiple eavesdroppers. In order to improve the secrecy level, the best relay selection strategy among multiple relays is employed. Performance analysis is carried out based on the mathematical modeling in terms of analytical expressions of non-zero secrecy capacity probability, secure outage probability, and ergodic secrecy capacity over multicast relay networks. Capitalizing on those expressions, the effects of system parameters, i.e., fading, shadowing, the number of antennas, destination receivers, eavesdroppers, and relays, on the secrecy performance are investigated. Numerical results show that the detrimental impacts caused by 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 exhibiting enormous versatility than the existing works.