Optimal unmanned aerial vehicle (UAV) placement in a 3-dimensional (3D) space to build connection between base station (BS) and ground user is studied herein. A key challenge avoid signal propagation blockage due obstacles. Much prior work uses probabilistic terrain models with model parameters learned from the statistics over large area, therefore, optimization for specific small local area po...

one of the most important problems in the system reliability optimization is redundancy allocation problem that has been studied in different system configurations. k-out-of-n structure is a general system configuration and offers enhanced capabilities for analyzing more design problems. hence, in this paper, the redundancy allocation problem of k-out-of-n systems is studied. in the most previo...