Optical domain digital-to-analog converter for visible light communications using LED arrays
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资源说明:In this paper, we describe a new type of digital-to-analog converter (DAC) for optical wireless communication. Conversion occurs in the optical rather than the electrical domain. The overall intensity of the light transmitted by an array of light-emitting diodes (LEDs) is varied by changing the number of LEDs that are switched on. A number of different structures are described, and their compatibility with light dimming and overall energy efficiency are discussed. The linearity of the new DAC de
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