论文标题
室内可见光通信的功率有效LED放置算法
Power Efficient LED Placement Algorithm for Indoor Visible Light Communication
论文作者
论文摘要
本文提出了一种用于室内可见光通信（VLC）的新型发电二极管（LED）放置算法。在经过考虑的模型中，可以将LED设计为高功率效率，同时满足室内通信和照明要求。在通信和照明级别的约束下，此设计问题被称为功率最小化问题。由于LED之间的相互作用和照明均匀性约束，因此配制的问题是复杂且非凸面。为了解决问题，我们首先将复杂的统一约束转换为一系列线性约束。然后提出了一种迭代算法，以将LED之间的相互作用解除，并将原始问题转化为一系列凸子问题。然后，我们使用Lagrange双重方法来解决子问题并获得原始问题的收敛解决方案。仿真结果表明，与基线方案相比，所提出的LED放置算法可以收获22.86％的功率消耗增益，并具有中央放置LED。
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.
