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Visible light communication using dual camera on one smartphone
Optics Express
|January 18, 2019
Summary
This study introduces a novel dual-modulation scheme for visible light communication using a smartphone's dual camera. This method significantly enhances the downlink data rate for optical camera communication (OCC).
Area of Science:
- Computer Science
- Electrical Engineering
- Optical Communications
Background:
- Dual camera systems are increasingly common in smartphones.
- Visible light communication (VLC) offers a potential wireless communication channel.
- Optical Camera Communication (OCC) leverages cameras for data transmission.
Purpose of the Study:
- To demonstrate a system prototype for visible light communication using a smartphone's dual color and monochrome cameras.
- To propose and evaluate a novel dual-modulation scheme for enhanced OCC performance.
Main Methods:
- Utilizing a smartphone's color and monochrome cameras simultaneously for data reception.
- Implementing a dual-modulation scheme: Color Ratio Modulation-Color Shift Keying (CRM-CSK) for the color camera.
- Employing Gray Level Modulation (GLM) for the monochrome camera to generate CRM symbols.
Main Results:
- Successful demonstration of a dual-camera system for visible light communication.
- Significant improvement in the downlink data rate for optical camera communication (OCC).
- Effective data transmission using a single light source.
Conclusions:
- The proposed dual-modulation scheme effectively utilizes both color and monochrome cameras for OCC.
- This approach offers a promising method for increasing data rates in smartphone-based visible light communication.
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