Backscatter Communication in UAV-enabled Mobile Edge Computing IoT Networks with and without Eavesdropper

In this paper, we study the performance of a multi-user backscatter communication (BC)-based unmanned aerial vehicle (UAV)-enable mobile edge computing (MEC) network, both with and without a passive eavesdropper. In particular, several users intend to offload their tasks to UAV equipped with a MEC server by utilizing dedicated BC communication and time division multiple access (TDMA) schemes. Meanwhile, the eavesdropper attempts to intercept information from each user without any attacks. In this context, we derive the closed-form expressions of the successful computation probability (SCP) without considering the wiretapping and the secrecy successful computation probability (SSCP) in the presence of a passive eavesdropper. Additionally, we examine the impacts of key parameters on the system's behavior to gain insight into its performance. Finally, we validate our analytical findings through Monte-Carlo simulations.