In this paper, we propose a near-capacity irregular precoded power-imbalanced (PI) optical spatial modulation (OSM) scheme. The PI-OSM scheme was developed for negating the effects of high channel correlation, which is often observed in optical wireless communications. In our proposed scheme, multiple PI-OSM subcodes are used to create a novel irregular precoded PI-OSM architecture. This allows us to match the extrinsic information transfer curves of the inner and outer codes in a flexible manner, hence reducing the signal-to-noise ratio required for achieving an infinitesimally low bit error rate (BER). Our numerical simulation results demonstrate that the irregular precoded PI-OSM scheme achieves a high performance, particularly in noise-dominant channels, and it outperforms the repetition-coded benchmark scheme with pulse-amplitude modulation.


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    Title :

    Exit-Chart-Based Design of Irregular Precoded Power-Imbalanced Optical Spatial Modulation


    Contributors:


    Publication date :

    2015-09-01


    Size :

    172208 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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