29 January 2018 Novel modulation scheme for VLC
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In this paper, we have proposed a novel modulation scheme for visible light communication (VLC), that has two preprocessing blocks namely, discrete Fourier transform (DFT) block and frequency domain signal shaping block, prior to conventional optical-orthogonal frequency division multiplexing (O-OFDM) modulation. Two variants of proposed scheme namely, with and without DC have been implemented so as to make it compatible with intensity modulation and direct detection (IM/DD). The results of the proposed schemes are compared against their standard O-OFDM counterparts based on peak-to-average power ratio (PAPR) and symbol error rate (SER). Results show that the proposed scheme has significantly lower PAPR and better SER as compared to corresponding O-OFDM counterpart.
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Rizwana Ahmad, Anand Srivastava, Hossam A. I. Selmy, "Novel modulation scheme for VLC", Proc. SPIE 10559, Broadband Access Communication Technologies XII, 105590K (29 January 2018); doi: 10.1117/12.2289832; https://doi.org/10.1117/12.2289832

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