Entropy Loading Design for the MIMO-OFDM Visible Light Communication System Using the OCT Precoding Technique

<div>Experimental verification when modulation order is 64-QAM: (a) GMI as a function of subcarrier index, (b) NGMI as a function of subcarrier index, (c) corresponding constellation density of the scheme without precoding, and (d) corresponding constellation density of the proposed scheme with OCT precoding.</div>

Advances in Condensed Matter Physics

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Figure 4

Figure 4: Entropy Loading Design for the MIMO-OFDM Visible Light Communication System Using the OCT Precoding Technique 