Optical Single Carrier-Interleaved Frequency Division Multiplexing for Visible Light Communication Systems

Osama Saied, Zabih Ghassemlooy, Sujan Rajbhandari, Andrew Burton

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)
5 Downloads (Pure)

Abstract

In this paper, a novel optical single carrier-interleaved frequency division multiplexing (OSC-IFDM) signaling scheme for an intensity modulation and direct detection (IM/DD) based visible light communications (VLC) system is presented. We show that, OSC-IFDM significantly improves the peak-to-average-power ratio (PAPR) of the DC-biased optical orthogonal frequency division multiplexing (DCO-OFDM). The reduction in the PAPR value is achieved by exploiting the symmetrical characteristics of the single carrier-interleaved frequency division multiple access (SC-IFDMA) time domain symbol, whereby the imaginary and real parts of the SC-IFDMA samples are separated and transmitted through two sub-symbols. Simulation results show that, the PAPR of OSC-IFDM is 10 dB lower than that of the DCO-OFDM scheme. We also show that the proposed scheme offers higher spectral efficiency compared to our previous work.
Original languageEnglish
Article number162910
JournalOptik
Volume194
Early online date3 Jul 2019
DOIs
Publication statusPublished - 1 Oct 2019

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