On Physical Layer Security of Double Rayleigh Fading Channels for Vehicular Communications

• Published in: IEEE wireless communications letters Vol. 7; no. 6; pp. 1038 - 1041
• Main Authors: Ai, Yun, Cheffena, Michael, Mathur, Aashish, Lei, Hongjiang
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01-12-2018; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: average secrecy capacity; Channels; double Rayleigh fading; Fading; Physical layer security; Rayleigh channels; Security; Signal to noise ratio; Uncertainty; Uncertainty analysis; vehicle-to-vehicle (V2V) communication; Vehicular ad hoc networks; Wireless communication; Wiretapping
• ISSN: 2162-2337; 2162-2345
• DOI: 10.1109/LWC.2018.2852765

In this letter, we study the physical layer secrecy performance of the classic Wyner's wiretap model over double Rayleigh fading channels for vehicular communications links. We derive novel and closed-form expressions for the average secrecy capacity (ASC) taking into account the effects of fading, path loss, and eavesdropper location uncertainty. The asymptotic analysis for ASC is also conducted. The derived expressions can be used for secrecy capacity analysis of a number of scenarios including vehicular-to-vehicular (V2V) communications. The obtained results reveal the importance of taking the eavesdropper location uncertainty into consideration while designing V2V communication systems.