Partial Secrecy Analysis in Wireless Systems: Diversity-Enhanced PLS over Generalized Fading Channels

Abstract

Securing information in future mobile networks is challenging, especially for devices with limited computational resources. Physical layer security (PLS) offers a viable solution by leveraging wireless channel randomness. When full secrecy is unattainable, the partial secrecy regime provides a realistic alternative. This work analyzes partial secrecy performance under the generalized multicluster fluctuating two-ray (MFTR) fading model, which subsumes many classical fading cases. We study a system with a transmitter (A), legitimate receiver (B), and eavesdropper (E), both B and E using antenna arrays with maximal ratio combining (MRC), under i.n.i.d. fading. Exact and closed-form approximations are derived for key secrecy metrics: generalized secrecy outage probability (GSOP), average fractional equivocation (AFE), and average information leakage rate (AILR). The results, validated by Monte Carlo simulations, retain constant complexity regardless of diversity order. The MFTR model's flexibility enables comprehensive assessment across fading conditions, showing that more MRC branches at B enhance secrecy performance depending on the A-E link characteristics.

References in corpus (9)

• Rethinking the Secrecy Outage Formulation: A Secure Transmission Design Perspective
• The Fluctuating Two-Ray Fading Model: Statistical Characterization and Performance Analysis
• On Secrecy Performance of RIS-Assisted MISO Systems over Rician Channels with Spatially Random Eavesdroppers
• On Secrecy Metrics for Physical Layer Security over Quasi-Static Fading Channels
• On Physical Layer Security over Fox's $H$-Function Wiretap Fading Channels
• Modeling and Analysis of sub-Terahertz Communication Channel via Mixture of Gamma Distribution
• On the Secrecy Performance and Power Allocation in Relaying Networks with Untrusted Relay in the Partial Secrecy Regime
• Secrecy Outage Analysis Over Fluctuating Two-Ray Fading Channels
• Secrecy Performance for Finite-Alphabet Inputs Over Fluctuating Two-Ray Channels in FDA Communications