研究目的
To propose and construct a theoretical model for a power switched, baseband modulation technique for visible light communications (VLC) that offers invariable communication properties over a wide range of dimming levels.
研究成果
SEPM has the unique property that dimming over a specific range does not influence the reliability of the transmission in the high signal to noise ratio scenario. The dimming range is determined by the number of bits per symbol. SEPM using 2 bits per symbol delivers an improved power efficiency compared to VOOK and VPPM, and this over the entire dimming range.
研究不足
The study does not provide experimental validation of the proposed SEPM technique. The impact of flicker on human observers is not studied in detail.
1：Experimental Design and Method Selection:
The study involves the construction of a theoretical model for the SEPM technique and its comparison with contemporary baseband power switched modulation techniques for VLC.
2：Sample Selection and Data Sources:
The study uses theoretical analysis and Monte Carlo simulations to evaluate the performance of SEPM.
3：List of Experimental Equipment and Materials:
Not explicitly mentioned.
4：Experimental Procedures and Operational Workflow:
The study involves theoretical modeling and simulation to analyze the communication properties of SEPM, including reliability, power and spectral efficiency, and synchronization sensitivity.
5：Data Analysis Methods:
The study uses theoretical expressions for error probability and Monte Carlo simulations to analyze the impact of synchronization errors on the BER.
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