Recently, visible light communication (VLC) has attracted increasing research interests, thanks to its notable advantages including for example abundant spectra, simultaneous illumination and communication, radiation-free deployment, etc. Benefitting from the widely availability of light emitting diode (LED), the VLC systems employing LED arrays are ready to exploit the multiple-input multiple-output (MIMO) technologies, where a high degree-of-freedom in, for example, the precoding design can be utilized for system performance enhancement. In this paper, we propose a new precoding scheme for multiuser (MU) MIMO-VLC systems, where the classical block diagonalization precoding (BDP) technique is applied based on the properties of the LED’s dynamic range. The resultant weight-adjusted BDP (WA-BDP) scheme generates an interference-free matrix by the traditional BDP approach, and then tunes the weights of the LEDs such that improved channel gains can be obtained. We verify the theoretical analysis by simulation results, which demonstrate the superiority of the proposed scheme in terms of the bit error rate (BER) performance.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Multiuser MIMO Precoded Visible Light Communication Under LED Dynamic Range Constraint


    Contributors:
    Zhao, Lei (author) / Cai, Kunyi (author) / Jiang, Ming (author)


    Publication date :

    2020-11-01


    Size :

    970774 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Multiuser MIMO Indoor Visible Light Communication System Using Spatial Multiplexing

    Lian, J. / Brandt-Pearce, M. | British Library Online Contents | 2017



    Spectrally Precoded OTFS Modulation

    Chen, Wei-Chang / Lu, Chang-Hung / Chung, Char-Dir | IEEE | 2022


    Matrix Normalization Based ZF Hybrid Precoded Multi-User MIMO mmWave Systems with Massive Array

    Li, Hang / Wang, Thomas Q. / Huang, Xiaojing et al. | IEEE | 2018


    Precoded-OFDM within GFDM Framework

    Nimr, Ahmad / Chafii, Marwa / Fettweis, Gerhard | IEEE | 2019