Comprehensive Design and Prototype of VLC Receivers With Large Detection Areas
Comprehensive Design and Prototype of VLC Receivers With Large Detection Areas
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DOI：
10.1109/jlt.2020.2985951
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发表时间：
2020-08
影响因子：
4.7
通讯作者：
Pooya Nabavi;M. Yuksel
中科院分区：
文献类型：
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作者：
Pooya Nabavi;M. Yuksel
在移动设备上稳定、实用地接收可见光通信 (VLC) 信号需要具有大检测区域的光电接收器，以获得宽视场 (FOV) 以及抗遮挡的鲁棒性。然而，大的检测（或孔径）面积降低了 VLC 接收器的有效带宽。我们设计并制作了 VLC 接收器原型，该接收器配备多光电探测器阵列和多级放大器，能够为白磷 LED 灯实现高速数据速率。接收器阵列可以布置成与移动设备的表面形状共形。我们测试了 VLC 系统在振动下的性能，表征了接收器运动和宽视场引起的延迟扩展，设计了基于时间和空间接收分集的多符号检测技术，并通过实际数据传输评估了性能。
Stable and practical reception of visible light communication (VLC) signals at mobile devices necessitates optoelectronic receivers with large detection areas to attain wide field-of-view (FOV) as well as robustness against blockage. However, large detection (or aperture) area reduces the effective bandwidth of VLC receivers. We design and prototype a VLC receiver with multi-photodetector array followed by a multi-stage amplifier, capable of attaining high-speed data rates for white phosphorous LED light. The receiver array can be arranged conformal to the surface shape of mobile devices. We test the VLC system's performance under vibrations, characterize delay spread arising from movements and wide FOV of the receiver, design multi-symbol detection techniques based on time and spatial reception diversity, and evaluate the performance with real data transmissions.