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Optimized DFT-spread OFDM based visible light communications with multiple lighting sources.

Zi-Yang Wu, Yu-Liang Gao, Ze-Kun Wang

|November 3, 2017

Summary

This summary is machine-generated.

Discrete Fourier transform spread orthogonal frequency-division multiplexing (DFT-S-OFDM) enhances visible light communication (VLC) by reducing signal interference. This study optimizes lighting layouts for reliable, high-speed Gbit/s data transmission in multi-light VLC systems.

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Area of Science:

Optical Communications
Signal Processing
Wireless Technologies

Background:

Discrete Fourier transform spread orthogonal frequency-division multiplexing (DFT-S-OFDM) effectively reduces Peak to Average Power Ratio (PAPR).
Visible Light Communication (VLC) systems offer high-speed data transmission potential using lighting infrastructure.
The performance of VLC is significantly influenced by the physical arrangement of multiple light sources.

Purpose of the Study:

To investigate the impact of multiple lighting layouts on DFT-S-OFDM performance in VLC.
To propose an optimized lighting layout strategy for enhanced VLC performance.
To demonstrate a real-time, Gbit/s DFT-S-OFDM based VLC system.

Main Methods:

Analysis of DFT-S-OFDM performance under various multiple lighting configurations.
Development of an optimization approach for lighting layouts, balancing interference and delay spread.
Real-time implementation of a Gbit/s DFT-S-OFDM VLC downlink prototype.

Main Results:

The study elucidates the performance mechanisms of DFT-S-OFDM in multi-light VLC.
An optimized lighting layout strategy was developed to mitigate interference and delay spread.
A functional Gbit/s DFT-S-OFDM based multiple lighting VLC system was successfully prototyped.

Conclusions:

DFT-S-OFDM is a viable technology for high-speed VLC.
Optimized lighting layout is crucial for maximizing performance in multi-light VLC systems.
The developed prototype demonstrates the practical feasibility of Gbit/s DFT-S-OFDM VLC.