Achievable Physical-Layer Security Over Composite Fading Channels

IEEE Access

卷:8

Paschalis C. Sofotasios¹  Sami Muhaidat¹  Osamah S. Badarneh²  Simon L. Cotton³  Naofal Aldhahir⁴  Khaled M. Rabie⁵ 

[1] Department of Electrical Engineering and Computer Science, Center for Cyber-Physical Systems, Khalifa University, Abu Dhabi, United Arab Emirates;

[2] Electrical and Communication Engineering Department, School of Electrical Engineering and Information Technology, German Jordanian University, Amman, Jordan;

[3] Institute of Electronics, Communications and Information Technology, Queen&x2019;

[4] School of Engineering, Manchester Metropolitan University, Manchester, U.K.;

[5] s University Belfast, Belfast, U.K.;

关键词: Average secrecy capacity;    Fisher-Snedecor F distribution;    physical layer security;    secure outage probability;   

DOI  :  10.1109/ACCESS.2020.3033893

来源: DOAJ

【 摘 要 】

We investigate the physical layer security limits of Wyner's wiretap model over Fisher-Snedecor .T composite fading channels. .T fading conditions have been recently shown to provide an accurate characterization of multipath fading and shadowing effects in emerging wireless transmission scenarios such as body centric, cellular and vehicular communications. To this end, we utilize a redefined analytic expression for the Fisher-Snedecor .T distribution in order to ensure unconstrained validity and reliability when used in the analysis of various performance metrics of interest. In this context, we assume that the main channel (i.e., between the source and the legitimate destination) and the eavesdropper's channel (i.e., between the source and the illegitimate destination) undergo independent quasi-static Fisher-Snedecor .T composite fading. Novel exact analytic expressions are then derived for the corresponding average secrecy capacity (ASC), secure outage probability (SOP) and probability of strictly positive secrecy capacity (SPSC) along with their insightful asymptotic representations. In addition, analytical expressions for the ASC, SOP and SPSC over mixed fading channels such as Nakagami-m/Nakagami-m, Nakagami-m/Fisher-Snedecor .T and Fisher-Snedecor .T/Nakagami-m are derived. The new formulations are validated through comparisons with Monte-Carlo simulations and analyzed to gain useful insights into the impact of the fading parameters on the achievable accuracy and the overall system performance.

【 授权许可】

Unknown