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Enhancing the decoding performance of optical wireless communication systems using receiver-side predistortion.

Qi Wang, Zhaocheng Wang, Sheng Chen

    Optics Express
    |February 12, 2014
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a predistortion module for white Light Emitting Diode (LED) optical wireless communication systems. The novel scheme enhances data transmission performance by optimizing the color mixing process.

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    Area of Science:

    • Optoelectronics
    • Optical Communications
    • Signal Processing

    Background:

    • White Light Emitting Diodes (LEDs) are crucial for illumination and increasingly used in high-speed optical wireless communications.
    • Existing systems face challenges in achieving optimal performance due to the nature of white light generation.
    • Enhancing receiver performance is key to realizing higher data rates in LED-based optical wireless systems.

    Purpose of the Study:

    • To propose and evaluate an improved predistortion scheme for optical wireless communication systems utilizing white LEDs.
    • To enhance the system's detection performance by exploiting the color mixing properties of white light.
    • To improve the reliability and data rate of white LED-based optical wireless communication.

    Main Methods:

    • Insertion of a predistortion module before the decoder at the receiver.
    • Exploitation of the inherent mixing of three unequal optical-power primary colors for white light generation.
    • Design of the predistortion module by minimizing the upper bound of the error probability.
    • Integration with a soft-decision decoder for enhanced performance.

    Main Results:

    • Significant improvement in detection performance was observed.
    • The proposed predistortion scheme effectively enhances system performance.
    • Simulation results validate the efficacy of the predistortion module.

    Conclusions:

    • The developed predistortion module offers a considerable improvement in detection performance for white LED optical wireless communication systems.
    • This approach effectively leverages the characteristics of white light generation to boost system capabilities.
    • The findings suggest a promising method for advancing high-data-rate optical wireless communication.