Impact of VLC on Light Emission Quality of White LEDs
Impact of VLC on Light Emission Quality of White LEDs
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DOI：
10.1109/jlt.2016.2542110
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发表时间：
2016-05
影响因子：
4.7
通讯作者：
W. Popoola
中科院分区：
文献类型：
--
作者：
W. Popoola
本文报道了数据调制对荧光粉转换白色LED发光质量的影响。结果表明，如果驱动LED的预期平均电流保持不变，则发射的光质量将保持不变。对于具有不变平均值的直流平衡调制信号，由于数据调制引起的瞬时驱动电流的任何波动对测量的光质量度量没有任何显著影响。因此，对于可见光通信应用，如果要保持由LED发射的光的预期质量，则直流平衡信令成为先决条件。研究结果表明，在适当的热管理下的LED测试。
This paper reports the effect of data modulation on the emitted light quality of phosphor converted white LEDs. The results showed that provided the expected average current driving the LEDs remains unchanged then the emitted light quality will stay the same. For a dc-balanced modulating signal, with a nonvarying average value, any fluctuations in the instantaneous driving current due to data modulation do not have any significant impact on the measured light quality metrics. For visible light communication applications therefore, a dc-balanced signalling becomes a prerequisite if the expected quality of light emitted by the LEDs is to be preserved. The findings are premised on adequate thermal management for the LEDs under test.