Securing Communications with Friendly Unmanned Aerial Vehicle Jammers

TL;DR

This paper investigates how friendly UAV jammers can enhance communication security against eavesdroppers by analyzing channel characteristics, optimal jammer placement, and the effects of jammer density and power.

Contribution

It introduces a comprehensive analysis of UAV jammer placement and effectiveness considering LoS/NLoS channels and eavesdropper distribution, providing new insights into secure UAV communications.

Findings

Existence of an optimal UAV jammer location.

Impact of eavesdropper density on security.

Effect of jammer power and density on optimal placement.

Abstract

In this paper, we analyze the impact of a friendly unmanned aerial vehicle (UAV) jammer on UAV communications in the presence of multiple eavesdroppers. We first present channel components determined by the line-of-sight (LoS) probability between the friendly UAV jammer and the ground device, and introduce different channel fadings for LoS and non-line-of-sight (NLoS) links. We then derive the secrecy transmission probability satisfying both constraints of legitimate and wiretap channels. We also analyze the secrecy transmission probability in the presence of randomly distributed multiple friendly UAV jammers. Finally, we show the existence of the optimal UAV jammer location, and the impact of the density of eavesdroppers, the transmission power of the UAV jammer, and the density of UAV jammers on the optimal location.