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Joint interframe separation and gamma correction for asynchronous optical camera communication systems based on
Optics Express
|June 11, 2024
Summary
A new kurtosis-based asynchronous interference cancellation (K-AIC) algorithm improves optical camera communication (OCC) by effectively handling frame overlaps and distortions. This method offers a reliable and computationally efficient solution for enhancing data rates in OCC systems.
Area of Science:
- Optical Camera Communication (OCC)
- Wireless Optical Communication
Background:
- Optical Camera Communication (OCC) systems utilize LED arrays and image sensors.
- Existing synchronization methods in OCC require high frame rates or complex algorithms.
- Asynchronous reception poses challenges for reliable data transmission in OCC.
Purpose of the Study:
- To introduce a novel kurtosis-based asynchronous interference cancellation (K-AIC) algorithm for OCC.
- To enable accurate estimation of asynchronous interframe overlapping ratios and Gamma distortion.
- To improve the reliability and efficiency of OCC systems under asynchronous conditions.
Main Methods:
- Development of the kurtosis-based asynchronous interference cancellation (K-AIC) algorithm.
- Estimation of asynchronous interframe overlapping ratios and nonlinear Gamma distortion levels.
- Numerical simulations and short-range OCC experiments to validate the algorithm's performance.
Main Results:
- The K-AIC algorithm demonstrates low computational complexity and high reliability.
- It effectively mitigates asynchronous-induced bit errors across various scenarios.
- Experimental results show a Q-factor enhancement of approximately 12 dB and a net data rate of 200 kbps.
Conclusions:
- The K-AIC algorithm successfully compensates for interframe overlapping and Gamma distortions in plesiochronous OCC.
- It offers a robust and efficient solution for enhancing OCC system performance.
- The proposed method significantly improves data rates and signal quality in optical camera communication.
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