Asymptotic Average Secrecy Rate for MISO Free-Space Optical Wiretap Channels

Ruben-Boluda-Ruiz, Sezer Can Tokgoz, Antonio García-Zambrana, Khalid Qaraqe
January 2019
Cite DOI URL

Abstract

Lately, it has been demonstrated that free-space optical (FSO) communication systems are not interception-free. For that reason, the scientific community is paying special attention to study these links from a physical layer security point of view. In this work, some potential eavesdropping attacks are studied for multiple-input/single-output (MISO) FSO communication systems with equal gain combining (EGC) reception over gamma-gamma (GG) and misalignment fading channels. A novel asymptotic solution at high signal-to-noise-ratio (SNR) is obtained to compute the average secrecy rate over turbulence channels. The robustness of FSO technology is once again proven by employing multiple laser sources at the transmitter side and, hence increasing the secrecy rate and obtaining a performance close to the capacity with no eavesdropper. © 2019 IEEE.

Type
Conference paper
Publication
IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Fading Channels Network Layers Optical Communication Signal Processing Average Secrecy Capacity Free-Space Optical Gamma-Gamma Fading Physical Layer Security Pointing Errors Signal to Noise Ratio
Antonio García-Zambrana
Antonio García-Zambrana
Professor of Telecommunications Engineering

Professor at the University of Málaga working on wireless optical communications, free-space optical links, underwater optical wireless communications, visible light communications, and FPGA/RFSoC-based real-time prototyping.