Unmanned aerial vehicle mounted base stations (UAV-BSs) can provide wireless services in a variety of scenarios. In this letter, we propose an optimal placement algorithm for UAV-BSs that maximizes the number of covered users using the minimum transmit power. We decouple the UAV-BS deployment problem in the vertical and horizontal dimensions without any loss of optimality. Furthermore, we model the UAV-BS deployment in the horizontal dimension as a circle placement problem and a smallest enclosing circle problem. Simulations are conducted to evaluate the performance of the proposed method for different spatial distributions of the users.

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Keywords coverage, drone, optimization, Unmanned aerial vehicles
Persistent URL dx.doi.org/10.1109/LWC.2017.2700840
Journal IEEE Wireless Communications Letters
Alzenad, M. (Mohamed), El-Keyi, A. (Amr), Lagum, F. (Faraj), & Yanikömeroǧlu, H. (2017). 3-D Placement of an Unmanned Aerial Vehicle Base Station (UAV-BS) for Energy-Efficient Maximal Coverage. IEEE Wireless Communications Letters, 6(4), 434–437. doi:10.1109/LWC.2017.2700840