White light-emitting diode (LED) consisting of red, green, blue, and amber chips (RGBA-LED) has recently been adopted as transmitter in visible light communication (VLC) systems. This paper proposed a reshaped orthogonal frequency division multiplexing (R- OFDM) scheme for RGBA-LED-based VLC systems. In the R- OFDM, the signal is adjusted by separation and biasing after clipping (BAC) operations for transmitting in RGBA-LED. Then, the biasing factor of BAC is derived according to the color mix ratio (CMR) of RGBA-LED. At the receiver, We develop a direct detection algorithm to recover the original data, and analyze its the theoretical bit error rate (BER). Furthermore, a lower bound of the BER is analyzed under high clipping ratio (CR) by using SNR upper bound. Finally, simulation results confirm our theoretical analysis and verify that R-OFDM outperforms the ACO-OFDM in term of BER.


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    Title :

    R-OFDM Transmission Scheme for Visible Light Communication Using RGBA-LED


    Contributors:
    Kong, Lei (author) / Xu, Wei (author) / Zhang, Hua (author) / Zhao, Chunming (author)


    Publication date :

    2016-09-01


    Size :

    244982 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English





    R-OFDM for RGBA-LED-Based Visible Light Communication With Illumination Constraints

    Kong, L. / Xu, W. / Zhang, H. et al. | British Library Online Contents | 2016