研究目的
To solve the problem of communication interruption caused by strong background light from the sun in visible light communication systems between LED traffic lights and vehicles.
研究成果
The power inversion algorithm can effectively suppress the influence of strong background light on the visible light communication between LED traffic lights and vehicles, improving the performance of the system. When the signal-to-interference ratio is equal to -15, the BER of the system is 10-4, enabling high-quality transmission.
研究不足
The paper does not explicitly mention the limitations of the research.
1：Experimental Design and Method Selection:
The paper establishes a visible light communication system under strong background light and introduces the power inversion algorithm to suppress the influence of strong background light.
2：Sample Selection and Data Sources:
The simulation generates a total of 1024 symbols, which becomes a matrix of 128×289 after PPM modulation.
3：List of Experimental Equipment and Materials:
LED traffic light model, photo-detectors, and a receiving array consisting of photo-detectors.
4：Experimental Procedures and Operational Workflow:
The signal is modulated by PPM, transmitted through a channel containing strong background light, received by the receiving array, and processed with the power inversion algorithm.
5：Data Analysis Methods:
The bit error rate of the systems under different signal-to-interference ratios is analyzed and compared.
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