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arXiv 2006.09894eess.SP
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室内可见光通信中功率有效的LED布局算法

Power Efficient LED Placement Algorithm for Indoor Visible Light Communication

Yang Yang, Zhiyu Zhu, Caili Guo, Chunyan Feng

摘要:

提出了一种适用于室内可见光通信的节能型发光二极管(LED)布局算法。在所考虑的模型中,LED可以被设计地放置以获得高功率效率,同时满足室内通信和照明要求。该设计问题被公式化为通信和照明水平约束下的功率最小化问题。由于LED之间的相互作用和照明均匀性约束,该问题是复杂且非凸的。为了解决这个问题,我们首先将复杂的均匀性约束转化为一系列线性约束。然后,提出了一种迭代算法来解耦LED之间的相互作用,并将原问题转化为一系列凸子问题。然后,利用拉格朗日对偶方法求解子问题,得到原问题的收敛解。仿真结果表明,所提出的LED布局算法可以收获22.86%的功耗增益时,与基线方案与集中放置的LED。

英文摘要:

This paper proposes a novel power-efficient light-emitting diode (LED) placement algorithm for indoor visible light communication (VLC). In the considered model, the LEDs can be designedly placed for high power efficiency while satisfying the indoor communication and illumination requirements. This design problem is formulated as a power minimization problem under both communication and illumination level constraints. Due to the interactions among LEDs and the illumination uniformity constraint, the formulated problem is complex and non-convex. To solve the problem, we first transform the complex uniformity constraint into a series of linear constraints. Then an iterative algorithm is proposed to decouple the interactions among LEDs and transforms the original problem into a series of convex sub-problems. Then, we use Lagrange dual method to solve the sub-problem and obtain a convergent solution of the original problem. Simulation results show that the proposed LED placement algorithm can harvest 22.86% power consumption gain when compared with the baseline scheme with centrally placed LEDs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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