We consider multiple unmanned aerial vehicles (UAVs) serving a density of ground terminals (GTs) as base stations. The objective is to minimize the outage probability GT-to-UAV transmissions. Optimal placement UAVs under different UAV altitude constraints and GT densities studied. A practical variant Rician fading model, which has been developed by Azari <italic xmlns:mml="http://www.w3.org/199...

Visible Light Communication (VLC) is a rapidly growing technology which can supplement the current radio-frequency (RF) based wireless communication systems. VLC play huge part in solving ever-increasing problem of spectrum scarcity because availability Emitting Diodes (LEDs). One biggest advantages over other systems that it provide illumination and data simultaneously without needing any extr...