Energy harvesting and information transmission scheme with UAV relay cooperation

Abstract

This paper proposed a system architecture model of two-hop unmanned aerial vehicle (UAV) relay wireless communication and designed an energy harvesting and information transmission algorithm based on the energy harvested by UAV relay node. The energy of nodes except source node can be obtained by energy harvesting and all the UAV relay nodes transmitted signals via power splitting. Under the advance of non-static channel, the information user nodes were configured with multiple antennas and adopted max ratio combination (MRC). Based on the optimization criterion of energy efficiency maximization, the analytical solution of the optimal power allocation scheme for energy harvested and information transmission of multiuser two-UAV relay system was derived in detail. Since the optimization problem was a non-convex problem, this paper adopted the high signal-to-noise ratio approximation method and the power splitting method to realize the closed-form solution expression. The optimal solution of the objective function subjected with constraints can be obtained by Lagrangian algorithm and Lambert W function. Finally, the proposed algorithms and theoretical analysis are verified by simulations.

Perspectives and Development of Electrical Systems in More Electric Aircraft

“…Energy harvesting is especially preferable for UAVs [182]. In [183,184], a wireless communication system with EH to transfer information from UAV to ground is proposed. Another research on EH is aimed at prolonging the UAV flight time by dynamic soaring [185] or the use of solar power [186].…”

Multi‐objective design of energy harvesting enabled wireless networks based on evolutionary genetic optimisation

“…Nasir et al [9 ] considered non‐convex modelling of throughput and harvested energy optimisation under power and data decoding constraints for non‐orthogonal multiple access (NOMA) networks. Energy harvesting and data transmission architecture are presented in [10 ] for the unmanned aerial vehicle relay systems with mobility characteristics. This work formulated the optimal power allocation problem for multi‐hop communication between unmanned aerial vehicle devices to develop a cooperative energy harvesting algorithm.…”