Iterative Signal Processing for Mitigation of Analog-to-Digital Converter Clipping Distortion in Multiband OFDMA Receivers

<table>Average BER as a function of clipping compensation iterations for User 1 using Receiver A when <svg height="14.6" id="M286" style="vertical-align:-3.13504pt" version="1.1" viewbox="0 0 87.974998 14.6" width="87.974998" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.6)">
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<tspan style="font-size: 12.50px; " x="0" y="0">𝑆</tspan>
<tspan style="font-size: 12.50px; " x="8.1269503" y="0">𝑁</tspan>
<tspan style="font-size: 12.50px; " x="18.767002" y="0">𝑅</tspan>
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<tspan style="font-size: 8.75px; " x="0" y="0">1</tspan>
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<tspan style="font-size: 12.50px; " x="0" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="12.027886" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="18.279387" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="24.530886" y="0">.</tspan>
<tspan style="font-size: 12.50px; " x="27.656635" y="0">9</tspan>
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</svg> dB and (a) <svg height="13.7375" id="M287" style="vertical-align:-2.34499pt" version="1.1" viewbox="0 0 35.262501 13.7375" width="35.262501" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,13.7375)">
<g transform="translate(72,-61.01)">
<text transform="matrix(1,0,0,-1,-71.95,63.4)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝛾</tspan>
<tspan style="font-size: 12.50px; " x="9.8148546" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="21.855244" y="0">6</tspan>
</text>
</g>
</g>
</svg> dB or (b) <svg height="13.6125" id="M288" style="vertical-align:-2.34499pt" version="1.1" viewbox="0 0 35.262501 13.6125" width="35.262501" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,13.6125)">
<g transform="translate(72,-61.11)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝛾</tspan>
<tspan style="font-size: 12.50px; " x="9.8148546" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="21.855244" y="0">2</tspan>
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</g>
</g>
</svg> dB. Iteration round 0 corresponds to the noncompensated signal. Arrows refers to the decoding (D) and compensation feedback (F) stages.</table>

Journal of Electrical and Computer Engineering

fig4

Figure 4

Figure 4: Iterative Signal Processing for Mitigation of Analog-to-Digital Converter Clipping Distortion in Multiband OFDMA Receivers 