Energy Efficiency Maximization for UAV-Assisted Emergency Communication Networks

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/wcmc/volume-2021/7595347/figures/7595347.fig.004a.svgz" name="7595347.fig.004a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Suburban</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/wcmc/volume-2021/7595347/figures/7595347.fig.004b.svgz" name="7595347.fig.004b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Urban</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/wcmc/volume-2021/7595347/figures/7595347.fig.004c.svgz" name="7595347.fig.004c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Dense urban</td></tr></table>

<div>The optimal 3D UAV location for three environments.</div>

Wireless Communications and Mobile Computing

fig4

Figure 4

Figure 4: Energy Efficiency Maximization for UAV-Assisted Emergency Communication Networks 