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Implementation of an mIRS-aided optical camera communication system: algorithm and experimental verification.

Lei Qian, Bin Chen, Xinyuan Zhang

    Optics Letters
    |May 15, 2026
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a Geometric-Signal Reconstruction (GSR) scheme to overcome signal fragmentation in optical camera communication (OCC) using mirror array-based intelligent reflecting surfaces (mIRS). The method successfully restores blocked links and enhances physical layer security.

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    Area of Science:

    • Optical Camera Communication (OCC)
    • Intelligent Reflecting Surfaces (IRS)
    • Wireless Communications

    Background:

    • Line-of-sight (LoS) blockage is a major challenge in optical camera communication (OCC).
    • Mirror array-based intelligent reflecting surfaces (mIRS) can mitigate LoS blockage but create fragmented signals due to mirror size limitations.
    • Fragmented signals from mIRS cannot be directly demodulated in OCC systems.

    Purpose of the Study:

    • To propose a novel Geometric-Signal Reconstruction (GSR) scheme for mIRS-aided OCC.
    • To address the challenge of fragmented optical signals in mIRS-based OCC systems.
    • To experimentally validate the effectiveness of the GSR scheme and its impact on system performance and security.

    Main Methods:

    • Developed a Geometric-Signal Reconstruction (GSR) scheme integrating Overlapping Beam Alignment (OBA) and Correlation Sequence Stitching (CSS) algorithms.
    • Configured mIRS orientation using the OBA algorithm for optimal signal reflection.
    • Integrated fragmented optical signals using the CSS algorithm for data demodulation.

    Main Results:

    • Achieved successful restoration of blocked links in an experimental mIRS-aided OCC system.
    • Demonstrated a bit error rate (BER) of 10-4, confirming reliable data transmission.
    • Significantly enhanced physical layer security through improved spatial selectivity.

    Conclusions:

    • The proposed GSR scheme effectively overcomes signal fragmentation challenges in mIRS-aided OCC.
    • The experimental implementation confirms the viability and performance benefits of the GSR scheme.
    • mIRS-aided OCC with GSR offers a promising solution for robust and secure wireless optical communication.