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Performance enhancement of multiple-mode FBMC-IM VLC systems with group-interleaved precoding
Optics Express
|June 11, 2024
Summary
This study introduces multiple-mode index modulation (MMIM) with filter bank multi-carrier (FBMC) for visible light communication (VLC). A novel group-interleaved precoding (GIP) technique enhances system performance and reduces complexity.
Area of Science:
- Optical Communications
- Signal Processing
Background:
- Visible light communication (VLC) systems offer high bandwidth and energy efficiency.
- Existing VLC systems face challenges in spectral efficiency and complexity.
- Filter bank multi-carrier (FBMC) modulation is a promising technique for high-speed VLC.
Purpose of the Study:
- To introduce multiple-mode index modulation (MMIM) applied to FBMC for VLC systems.
- To propose a group-interleaved precoding (GIP) technique to improve MM-FBMC-IM VLC performance.
- To develop a low-complexity maximum likelihood (LCML) detector for the proposed system.
Main Methods:
- Application of MMIM to FBMC in VLC.
- Development and implementation of the GIP technique for precoding.
- Design of a robust LCML detector.
- Performance evaluation through simulations and experimental validation.
Main Results:
- The proposed MM-FBMC-IM VLC system with GIP demonstrates enhanced performance.
- GIP effectively reduces precoding complexity and equalizes signal-to-noise ratio (SNR).
- The LCML detector achieves performance comparable to a standard ML detector with similar complexity.
- Simulation and experimental results validate the system's effectiveness and superiority.
Conclusions:
- The integration of MMIM and FBMC with GIP presents a significant advancement for VLC systems.
- The proposed techniques offer a robust and efficient solution for high-performance visible light communication.
- The developed LCML detector provides a practical approach for real-world VLC implementations.
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