Information-Theoretic Analysis of Underwater Acoustic OFDM Systems in Highly Dispersive Channels

<table>Power spectral density of the ambient noise for various wind speeds <i>v</i>, <i>s</i> is set to 0.5. The solid lines show the model (<a href="https://static.hindawi.com/articles/jece/volume-2012/716720/figures/#EEq47">A.2</a>) and dashed lines the one of (<a href="https://static.hindawi.com/articles/jece/volume-2012/716720/figures/#EEq49">A.4</a>). <svg height="15.7125" id="M237" style="vertical-align:-3.2316pt" version="1.1" viewbox="0 0 15.1 15.7125" width="15.1" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,15.7125)">
<text transform="matrix(1,0,0,-1,0.498,3.72)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑓</tspan>
</text>
<text transform="matrix(1,0,0,-1,7.437,0.594)">
<tspan style="font-size: 8.75px; " x="0" y="0">𝑐</tspan>
</text>
</g>
</svg> is the carrier frequency corresponding the 0th subcarrier.</table>

Journal of Electrical and Computer Engineering

fig6

Figure 6

Figure 6: Information-Theoretic Analysis of Underwater Acoustic OFDM Systems in Highly Dispersive Channels 