Energy Efficient UAV Communication with Energy Harvesting
arXiv:1911.00351
Abstract
This paper investigates an unmanned aerial vehicle (UAV)-enabled wireless communication system with energy harvesting, where the UAV transfers energy to the users in half duplex or full duplex, and the users harvest energy for data transmission to the UAV. We minimize the total energy consumption of the UAV while accomplishing the minimal data transmission requests of the users. The original optimization problem is decomposed into two subproblems: path planning subproblem and energy minimization subproblem with fixed path planning. For path planning subproblem, the optimal visiting order is obtained by using the dual method and the trajectory is optimized via the successive convex approximation technique. For energy minimization subproblem with fixed path planning, we firstly obtain the optimal portion of data transmission time within the entire procedure and the optimal transmission power of each user. Then, the the energy minimization subproblem is greatly simplified and it is efficiently solved via a one-dimensional search method. Simulation results are illustrated to verify the theoretical findings.
arXiv comment14 pages, 10 figures
References in corpus (6)
- Wireless Communications with Unmanned Aerial Vehicles: Opportunities and Challenges
- Efficient Deployment of Multiple Unmanned Aerial Vehicles for Optimal Wireless Coverage
- Placement Optimization of UAV-Mounted Mobile Base Stations
- A Vision of 6G Wireless Systems: Applications, Trends, Technologies, and Open Research Problems
- Optimization of Rate Allocation and Power Control for Rate Splitting Multiple Access (RSMA)
- Optimal 1D Trajectory Design for UAV-Enabled Multiuser Wireless Power Transfer