On overcoming photodetector saturation due to background illumination while maintaining high sensitivity by means of a tailored CMOS pixel

P. N. A. Belmonte, L. M. Chaves, F. S. Torres, D. W. de Lima Monteiro
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引用次数: 2

Abstract

Visible Light Communication is a good candidate to substitute, or at least to work along with Wi-Fi at indoor environments. Nonetheless, it still faces several challenges, like the necessity of receivers with high sensitivity and Dynamic Range. This follows from the large DC level of the high brightness LED and the intense levels of background illumination. We present in this paper a review of an integrated circuit topology, the Bouncing Pixel, that avoids signal saturation, achieving both High Dynamic Range and high sensitivity, suited to be implemented on a chip. The Pixel has the potential to be a good candidate for Li-Fi applications at the receiver node, especially for IoT applications.
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利用定制的CMOS像素,克服因背景照明引起的光电探测器饱和,同时保持高灵敏度
可见光通信是一个很好的替代品,或者至少在室内环境下与Wi-Fi一起工作。然而,它仍然面临着一些挑战,如需要高灵敏度和动态范围的接收器。这是由高亮度LED的大直流电平和强烈的背景照明电平引起的。本文介绍了一种集成电路拓扑结构,即弹跳像素,它可以避免信号饱和,实现高动态范围和高灵敏度,适合在芯片上实现。Pixel有潜力成为接收器节点上Li-Fi应用的良好候选者,尤其是物联网应用。
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