Turbo-Coded MC-CDMA Communication Link over Strong Turbulence Fading Limited FSO Channel with Receiver Space Diversity

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td align="left">Bit error rate</td><td align="center"><span style="width: 34.8125px;"><svg height="14.2" id="M220" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 34.8125 14.2" width="34.8125" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.2)">
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<text transform="matrix(1,0,0,-1,-71.95,60.86)">
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<tspan style="font-size: 12.50px; " x="6.2515001" y="0">0</tspan>
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<tspan style="font-size: 8.75px; " x="5.99512" y="0">1</tspan>
<tspan style="font-size: 8.75px; " x="10.37112" y="0">0</tspan>
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</svg></span></td></tr><tr><td align="left">Modulation/detection</td><td align="center">8-ary PSK based subcarrier intensity modulation/direct detection</td></tr><tr><td align="left">Number of photodetectors</td><td align="center">4 (PIN photodetector)</td></tr><tr><td align="left">Average electrical CINR per photodetector requirement</td><td align="center">10.2 dB</td></tr><tr><td align="left">Spreading sequence</td><td align="center">256 chip GOLD sequence</td></tr><tr><td align="left">Turbo-coding configuration</td><td align="center">16 state Rate-1/3  <svg height="13.45" id="M221" style="vertical-align:-2.21957pt" version="1.1" viewbox="0 0 78.262497 13.45" width="78.262497" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 12.50px; " x="21.867746" y="0">3</tspan>
<tspan style="font-size: 12.50px; " x="28.119247" y="0">7</tspan>
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</svg>  Turbo Code with   <svg height="14.7125" id="M222" style="vertical-align:-3.22281pt" version="1.1" viewbox="0 0 61.0625 14.7125" width="61.0625" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 12.50px; " x="12.027886" y="0">2</tspan>
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</svg> and <svg height="14.7125" id="M223" style="vertical-align:-3.22281pt" version="1.1" viewbox="0 0 57.037498 14.7125" width="57.037498" xmlns="http://www.w3.org/2000/svg">
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</svg></td></tr><tr><td align="left"> Laser beam wavelength</td><td align="center">1.55 <i>μ</i>m</td></tr><tr><td align="left">Achievable link length</td><td align="center">3 to 3.5 Km</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Proposed system profile in presence of strong turbulence fading.

International Scholarly Research Notices

tab5

Table 5

Table 5: Turbo-Coded MC-CDMA Communication Link over Strong Turbulence Fading Limited FSO Channel with Receiver Space Diversity 