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<p>Visible Light Communication (VLC) has emerged as a viable alternative to traditional radio frequency (RF) systems, offering inherent advantages such as high bandwidth availability, electromagnetic interference immunity, and enhanced physical-layer security. Despite these benefits, VLC systems employing multi-carrier modulation continue to face major challenges, particularly high Peak-to-Average Power Ratio (PAPR) and elevated Bit Error Rates (BER), which hinder overall system efficiency and reliability. This paper introduces a novel hybrid VLC architecture that synergistically combines Adaptive Symbol Reshaping (ASR) and Generalized Optical Spatial Modulation (GOSM) within both Orthogonal Frequency Division Multiplexing (OFDM) and Filter Bank Multicarrier (FBMC) transmission frameworks. The proposed ASR technique dynamically adjusts symbol amplitudes to suppress peak power fluctuations, while GOSM leverages spatial domain modulation to enhance data throughput and robustness without increasing spectral load. Comprehensive simulation results validate the effectiveness of the proposed architecture. Notably, the integrated FBMC-ASR-GOSM system achieves up to 5.5&#xa0;dB reduction in PAPR and delivers BER improvements exceeding 81% compared to conventional OFDM systems. These enhancements underscore the system’s potential for enabling high-performance, energy-efficient, and scalable VLC solutions tailored for next-generation indoor wireless networks.</p>

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Enhancing VLC systems using adaptive symbol reshaping and generalized optical spatial modulation

  • 期刊论文

  • 发表日期：

    2025年10月29日

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  • Haitham F. Abdalla,
  • Emad S. Hassan,
  • Ahmed S. Oshaba

摘要

Visible Light Communication (VLC) has emerged as a viable alternative to traditional radio frequency (RF) systems, offering inherent advantages such as high bandwidth availability, electromagnetic interference immunity, and enhanced physical-layer security. Despite these benefits, VLC systems employing multi-carrier modulation continue to face major challenges, particularly high Peak-to-Average Power Ratio (PAPR) and elevated Bit Error Rates (BER), which hinder overall system efficiency and reliability. This paper introduces a novel hybrid VLC architecture that synergistically combines Adaptive Symbol Reshaping (ASR) and Generalized Optical Spatial Modulation (GOSM) within both Orthogonal Frequency Division Multiplexing (OFDM) and Filter Bank Multicarrier (FBMC) transmission frameworks. The proposed ASR technique dynamically adjusts symbol amplitudes to suppress peak power fluctuations, while GOSM leverages spatial domain modulation to enhance data throughput and robustness without increasing spectral load. Comprehensive simulation results validate the effectiveness of the proposed architecture. Notably, the integrated FBMC-ASR-GOSM system achieves up to 5.5 dB reduction in PAPR and delivers BER improvements exceeding 81% compared to conventional OFDM systems. These enhancements underscore the system’s potential for enabling high-performance, energy-efficient, and scalable VLC solutions tailored for next-generation indoor wireless networks.