Conference paper Open Access

OFDM Based Visible Light Communication with Probabilistic Shaping

Gutema, Tilahun Zerihun; Haas, Harald; Popoola, Wasiu


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    <subfield code="d">25-September-2020</subfield>
    <subfield code="a">"Light Up the IoT" - Workshop Co-located with ACM MobiCom 2020</subfield>
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    <subfield code="u">The University of Edinburgh</subfield>
    <subfield code="a">Haas, Harald</subfield>
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    <subfield code="u">The University of Edinburgh</subfield>
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    <subfield code="u">The University of Edinburgh</subfield>
    <subfield code="a">Gutema, Tilahun Zerihun</subfield>
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    <subfield code="a">OFDM Based Visible Light Communication with Probabilistic Shaping</subfield>
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    <subfield code="c">814215</subfield>
    <subfield code="a">European Training Network in Low-energy Visible Light IoT Systems</subfield>
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    <subfield code="a">&lt;p&gt;shaped orthogonal frequency multiplexed (OFDM) modulation is presented. The average symbol energy of probabilistically shaped&lt;br&gt;
OFDM modulation is investigated for different modulation orders of quadrature amplitude modulation (QAM) under different entropy&lt;br&gt;
scenarios. Furthermore, the symbol error performance of the probabilistically shaped OFDM system under additive white Gaussian&lt;br&gt;
noise (AWGN) channel condition is evaluated. The probabilistically shaped OFDM system outperforms the uniformly distributed in the symbol error ratio performance. For 256-QAM with an entropy of 7.84 bits, we have shown a 3 dB gain in signal-to-noise ratio (SNR) per symbol compared to uniform 256-QAM at a symbol error ratio of 10&amp;minus;3. This gain increases to 5.5 dB by decreasing the entropy to 6.80 bits.&lt;/p&gt;</subfield>
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