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Updated: May 15, 2026
07:45
Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
3.4 Gbit/s visible optical wireless transmission based on RGB LED
G Cossu1, A M Khalid, P Choudhury
1Scuola Superiore Sant’Anna, Istituto TeCIP, Via G Moruzzi 1, Pisa 56124, Italy. g.cossu@sssup.it
Optics Express
|December 25, 2012
Summary
Researchers achieved gigabit-class data rates in indoor visible light communication (VLC) systems. Using optimized discrete multi-tone (DMT) modulation and wavelength division multiplexing (WDM), they reached record speeds below the forward error correction (FEC) limit.
Area of Science:
- Optoelectronics
- Wireless Communication
Background:
- Visible Light Communication (VLC) offers a high-bandwidth wireless communication alternative.
- Existing VLC systems face challenges in achieving gigabit-class data rates with standard illumination.
Purpose of the Study:
- To experimentally demonstrate a gigabit-class indoor VLC system.
- To achieve data rates exceeding previous benchmarks.
Main Methods:
- Utilized commercially available RGB White Light Emitting Diodes (LEDs).
- Employed an optimized Discrete Multi-Tone (DMT) modulation scheme.
- Implemented Wavelength Division Multiplexing (WDM) for enhanced data throughput.
Main Results:
- Achieved a single-channel data rate of 1.5 Gbit/s.
- Reached a total data rate of 3.4 Gbit/s using WDM transmission.
- Maintained bit error ratios below the Forward Error Correction (FEC) threshold in all experiments.
Conclusions:
- The developed VLC system represents a significant advancement in indoor wireless communication.
- The achieved data rates are the highest reported for VLC systems to date.
- Optimized DMT modulation and WDM are effective strategies for high-speed VLC.
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