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Multi-cell VLC system design under illumination and communication constraints
Optical Switching and Networking ( IF 2.2 ) Pub Date : 2019-05-15 , DOI: 10.1016/j.osn.2019.05.001
Mai Kafafy , Yasmine Fahmy , Mohamed Khairy

Visible Light Communication (VLC) uses lamps light to convey information. As such, lamps in VLC systems work not only as illumination devices, but as VLC Access Points (VAPs) as well. This makes the choice of the lamps’ specifications and positions vital to satisfy the illumination and communication requirements. It is important that an indoor environment has the best possible VLC performance and the lowest possible power consumption while maintaining satisfactory illumination conditions. Designing multi-VAP systems is challenging due to the conflicting requirements of illumination and communication. For example, closely installed lamps give more consistent illumination but more inter-VAP interference, and vice versa. In this paper, we propose an optimal strategy to design multi-VAP systems. We consider the general design problem that aims to maximize the VLC performance while minimizing the total power consumption. This should be achieved while keeping satisfactory illumination conditions represented by the average illumination level and the degree of illumination consistency. The multi-VAP system design is formulated as a two objective design problem with constraints on illumination. The interplay between the system design parameters and the constraints and objectives is then studied. Finally, the algorithm to optimize multi-VAP design strategies is proposed.



中文翻译:

光照和通信约束下的多小区VLC系统设计

可见光通信(VLC)使用灯光来传达信息。因此,VLC系统中的灯不仅用作照明设备,而且还用作VLC接入点(VAP)。这使得选择灯的规格和位置对于满足照明和通信要求至关重要。在保持令人满意的照明条件的同时,室内环境必须具有最佳的VLC性能和最低的功耗,这一点很重要。由于照明和通信需求的冲突,设计多VAP系统具有挑战性。例如,紧密安装的灯可提供更一致的照明,但VAP间的干扰更大,反之亦然。在本文中,我们提出了设计多VAP系统的最佳策略。我们考虑了旨在最大程度地提高VLC性能,同时又将总功耗降至最低的一般设计问题。这应该在保持令人满意的照明条件的同时实现,该条件由平均照明度和照明一致性程度表示。multi-VAP系统设计被公式化为一个受照明约束的两个目标设计问题。然后研究系统设计参数与约束和目标之间的相互作用。最后,提出了优化多VAP设计策略的算法。multi-VAP系统设计被公式化为一个受照明约束的两个目标设计问题。然后研究系统设计参数与约束和目标之间的相互作用。最后,提出了优化多VAP设计策略的算法。multi-VAP系统设计被公式化为一个受照明约束的两个目标设计问题。然后研究系统设计参数与约束和目标之间的相互作用。最后,提出了优化多VAP设计策略的算法。

更新日期:2019-05-15
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