Two-Dimensional Iterative Processing for DAB Receivers Based on Trellis-Decomposition

<table>A 2D block of symbols out of an OFDM stream. We are interested in <svg height="10.325" id="M37" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 17.237499 10.325" width="17.237499" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.325)">
<g transform="translate(72,-63.74)">
<text transform="matrix(1,0,0,-1,-71.95,63.79)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑀</tspan>
</text>
</g>
</g>
</svg> adjacent sequences of <svg height="11.325" id="M38" style="vertical-align:-0.51414pt" version="1.1" viewbox="0 0 38.887501 11.325" width="38.887501" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,11.325)">
<g transform="translate(72,-62.94)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑁</tspan>
<tspan style="font-size: 12.50px; " x="13.415719" y="0">+</tspan>
<tspan style="font-size: 12.50px; " x="24.755939" y="0">1</tspan>
</text>
</g>
</g>
</svg> subsequent symbols, where each such sequence corresponds to one of <svg height="10.325" id="M39" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 17.237499 10.325" width="17.237499" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.325)">
<g transform="translate(72,-63.74)">
<text transform="matrix(1,0,0,-1,-71.95,63.79)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑀</tspan>
</text>
</g>
</g>
</svg> adjacent subcarriers.</table>

Journal of Electrical and Computer Engineering

fig3

Figure 3

Figure 3: Two-Dimensional Iterative Processing for DAB Receivers Based on Trellis-Decomposition 