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

<table>Lower-bound <svg height="15.08" id="M216" style="vertical-align:-0.15048pt" version="1.1" viewbox="0 0 25.588751 15.08" width="25.588751" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,15.08)">
<text transform="matrix(1,0,0,-1,0.498,0.648)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝐶</tspan>
</text>
<text transform="matrix(1,0,0,-1,8.888,5.649)">
<tspan style="font-size: 8.75px; " x="0" y="0">𝐿</tspan>
<tspan style="font-size: 8.75px; " x="6.1965151" y="0">1</tspan>
</text>
</g>
</svg> normalized with respect to coherent information rate <svg height="15.15625" id="M217" style="vertical-align:-0.15048pt" version="1.1" viewbox="0 0 28.171249 15.15625" width="28.171249" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,15.15625)">
<text transform="matrix(1,0,0,-1,0.498,0.648)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝐶</tspan>
</text>
<text transform="matrix(1,0,0,-1,8.888,5.649)">
<tspan style="font-size: 8.75px; " x="0" y="0">c</tspan>
<tspan style="font-size: 8.75px; " x="3.8859501" y="0">o</tspan>
<tspan style="font-size: 8.75px; " x="8.2620201" y="0">h</tspan>
</text>
</g>
</svg>. For each channel, <i>TF</i> is chosen such that there is no ISI.</table>

Journal of Electrical and Computer Engineering

fig5

Figure 5

Figure 5: Information-Theoretic Analysis of Underwater Acoustic OFDM Systems in Highly Dispersive Channels 