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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Published on: March 20, 2017

Indoor MIMO-VLC Using Angle Diversity Transmitters.

Biao Qin¹, Wanli Wen¹, Min Liu¹

¹School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400044, China.

Sensors (Basel, Switzerland)

|July 27, 2022

Summary

This summary is machine-generated.

Angle diversity transmitters (ADTs) significantly boost multiple-input multiple-output visible light communication (MIMO-VLC) systems. Optimizing ADT design, including LED inclination and spacing, maximizes data rates, achieving up to 42.9% improvement.

Keywords:

angle diversity transmitter (ADT)multiple-input multiple-output (MIMO)visible light communication (VLC)

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Quasi-light Storage for Optical Data Packets

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Area of Science:

Optical Communications
Wireless Networking
Signal Processing

Background:

Multiple-input multiple-output visible light communication (MIMO-VLC) systems offer high bandwidth potential.
Enhancing MIMO-VLC performance is crucial for next-generation wireless networks.
Conventional transmitters face limitations in maximizing spectral efficiency.

Purpose of the Study:

To introduce and evaluate angle diversity transmitters (ADTs) for the first time in MIMO-VLC systems.
To investigate the impact of ADT design parameters on system performance.
To demonstrate a method for optimizing ADT configuration to improve data rates.

Main Methods:

Developing an ADT comprising a central LED and multiple inclined side LEDs.
Calculating the line-of-sight (LOS) channel gain for ADT-based MIMO-VLC systems.
Deriving and analyzing the average achievable rate as a function of ADT parameters.
Conducting simulations to validate theoretical findings and identify optimal configurations.

Main Results:

The average achievable rate is directly influenced by the inclination angle of side LEDs and the spacing between adjacent ADTs.
Optimal inclination angles and inter-ADT spacing were identified to maximize the system's average achievable rate.
Increasing the number of LEDs per ADT further enhances the average achievable rate.
A substantial 42.9% improvement in average achievable rate was observed with optimized ADTs compared to conventional transmitters.

Conclusions:

ADTs represent a significant advancement for MIMO-VLC system performance.
The design of ADTs, specifically LED arrangement and spacing, is critical for maximizing data transmission rates.
Optimized ADTs offer a practical and effective solution for substantially improving the performance of visible light communication systems.