Performance Analysis of UAV-aided RF Energy Transfer

Abstract

In this paper, the performance analysis of unmanned aerial vehicle (UAV)-aided RF energy transfer (RFET) in presence of hovering inaccuracy is investigated. Hovering inaccuracy of UAV refers to the error during the execution of mission due to imperfect hovering. This leads to change in distance and elevation angle between the transmitter (mounted on UAV) and the receiver (sensor node deployed on ground). A closed-form expression on received power is obtained for a generalized radiation pattern of transmitter antenna mounted on UAV. The simulation results reveal that, compared to the ideal scenario, power received at the sensor node reduces significantly in presence of hovering inaccuracy.