研究目的
Investigating the performance of colour coded multiple access (CCMA) orthogonal frequency division multiplexing (OFDM) visible light communication (VLC) system for high-speed data transmission.
研究成果
The designed CCMA OFDM VLC system demonstrates low BER and high data rate capabilities, making it suitable for real-time high-speed communication systems. The use of flip-OFDM and RGB LDs provides an efficient method for combining illumination and data transmission.
研究不足
The study is based on simulation results, and real-world implementation may face challenges such as alignment of laser diodes, environmental interference, and safety standards for laser use.
1：Experimental Design and Method Selection:
The study involves the simulation of a CCMA OFDM VLC system using RGB laser diodes for high-speed data transmission. The system's performance is analyzed through constellation diagrams, signals, and spectrum comparisons.
2：Sample Selection and Data Sources:
The simulation uses a data rate of 10 Gbps, with the system designed for indoor room dimensions of 10 × 10 × 10 m.
3：List of Experimental Equipment and Materials:
The system utilizes red, green, and blue laser diodes (RGB LDs) for optical modulation and combines these signals to form white light.
4：Experimental Procedures and Operational Workflow:
The OFDM-modulated signals are optically modulated with RGB LDs, combined, and diffused to form white light. The performance is analyzed through various modulation schemes like M-QAM and M-PSK.
5：Data Analysis Methods:
The performance is evaluated using constellation diagrams, signal and spectrum comparisons, and BER values against SNR.
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