Free-space communication with a pair of extremely high-density display panel and camera

Area of Science:

• Optical Communications
• Wireless Technology
• Data Transmission

Background:

• Visible Light Communication (VLC) faces spatial data capacity limitations.
• Optical Camera Communication (OCC) uses high-resolution displays and cameras for parallel data transmission.
• Optical aberrations and diffraction in OCC increase bit error rate (BER) due to blur and inter-symbol interference.

Purpose of the Study:

• To introduce a table-based coding (TBC) method for optical camera communication (OCC).
• To mitigate performance degradation caused by optical blur in dense spatial encoding.
• To enable high-density, blur-tolerant optical communication systems.

Main Methods:

• System modeling and impulse response analysis.
• Development and application of a table-based coding (TBC) method.
• Experimental validation of the proposed OCC system with TBC.

Main Results:

• The proposed OCC system with TBC achieves a projected throughput of 33.975 Gb/s.
• A low bit error rate (BER) was demonstrated, approaching the ideal blur-free limit.
• The TBC method effectively eliminates pixel patterns prone to misclassification under optical blur.

Conclusions:

• Table-based coding (TBC) enables high-density, blur-tolerant optical communication.
• Display-based transmitters show significant potential for next-generation free-space communication.
• The developed OCC system offers a viable solution for enhanced wireless data transmission.