Çelik, YasinAkan, Aydin13.07.20192019-07-1613.07.20192019-07-162017978-1-5090-6494-62165-0608https://hdl.handle.net/20.500.12451/340025th Signal Processing and Communications Applications Conference (SIU) -- MAY 15-18, 2017 -- Antalya, TURKEYWOS:000413813100200In this paper, the performance of direct current informative subcarrier intensity modulation (DCI-SIM) which is proposed to enhance the power efficiency of subcarrier intensity modulation (SIM) is investigated in visible light communication. The BER performance of DCI-SIM is compared with SIM, pulse amplitude modulation (PAM) and, enhanced unipolar orthogonal frequency division multiplexing (eU-OFDM) for different spectral efficiencies. Using analytical derivations and simulation results, we show that the DCI-SIM is the most power efficient modulation technique among others, and that the power efficiency increases with the spectral efficiency. Furthermore, we optimize the constellation of 64-DCI-SIM and present the results.trinfo:eu-repo/semantics/openAccessSubcarrier intensity modulationDC-informative subcarrier intensity modulationPAMeU-OFDMIM/DDConference ObjectN/AWOS:000413813100200N/A