In this paper, we study a novel optical orthogonal frequency division multiplexing (OFDM) scheme, fractional reversed polarity optical OFDM (FRPO- OFDM), which enables dimmable visible light communications. The scheme combines an asymmetrically clipped optical OFDM (ACO-OFDM) sequence with an information-carrying brightness control sequence (BCS). We show that the new scheme can create a wide range of brightness levels whilst transmitting extra information using the BCS to enhance the spectral efficiency. The detector which can recover information from both sequences is derived based on maximum likelihood (ML) detection and estimation. It is shown that the information carried by the BCS using variable on-off keying (VOOK) can be detected with extremely low bit error rate (BER) and that the resulting overall BER of FRPO-OFDM is constant over a wide dimming range.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Dimming Compatible Optical OFDM for High Speed Visible Light Communications


    Contributors:


    Publication date :

    2017-06-01


    Size :

    544397 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Single Edge Position Modulation as a Dimming Technique for Visible Light Communications

    Stevens, N. / De Strycker, L. | British Library Online Contents | 2016



    Visible light communications employing PPM and PWM formats for simultaneous data transmission and dimming

    Choi, J. h. / Cho, E. b. / Ghassemlooy, Z. et al. | British Library Online Contents | 2015


    Burst-Mode Compatible Receivers for High Speed Digital Optical Communications

    IEEE; Lasers and Electro-Optics Society | British Library Conference Proceedings | 1993


    OFDM for Optical Communications

    Armstrong, J. | British Library Online Contents | 2009