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Improved light uniformity and SNR employing new LED distribution pattern for indoor applications in VLC system

机译：在VLC系统的室内应用中采用新的LED分布模式改善了光的均匀性和SNR

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摘要

In this paper, a new LED arrangement design using 16 LED array in an indoor VLC system is introduced. The performance of the proposed design is investigated and compared with other different (previously introduced) designs using the same number of LED arrays. Our aim is to increase light uniformity and decrease power and SNR fluctuations across the room without increasing number of LED arrays. The received power and SNR were calculated to evaluate the system performance, while the root mean square delay spread was calculated to analyze the intersymbol interference impact on the system performance. The power standard deviation (STD) was calculated as well to measure uniformity of distributed power. The received power fluctuations under our proposed LED lamp arrangement were reduced from 4.46 to 0.93dBm, the STD is decreased from 1.01 to 0.23, and the SNR fluctuations were reduced from 9 to 1.8dB leading to almost identical communication across the entire room with high quality.
机译：本文介绍了一种在室内VLC系统中使用16个LED阵列的新型LED布置设计。研究了所提出设计的性能，并将其与使用相同数量LED阵列的其他不同（先前引入的）设计进行了比较。我们的目标是在不增加LED阵列数量的情况下提高光线均匀性并减少整个房间的功率和SNR波动。计算接收功率和SNR以评估系统性能，同时计算均方根延迟扩展以分析符号间干扰对系统性能的影响。还计算了功率标准偏差（STD），以测量分配功率的均匀性。我们建议的LED灯布置下的接收功率波动从4.46降低到0.93dBm，STD从1.01降低到0.23，SNR波动从9dB降低到1.8dB，从而在整个房间内实现几乎相同的高质量通信。

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