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SNR Statistics of Indoor Mobile VLC Users with Random Device Orientation

机译：面向随机设备的室内移动VLC用户的SNR统计

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摘要

This paper studies the signal to noise ratio (SNR) statistics of mobile users with random orientations in an indoor visible light communication (VLC) system. The considered system model consists of an access point (AP) and a mobile user device (UD) with a random orientation, which makes the instantaneous received SNR random. The distance between the AP and the UD is modeled through the random waypoint (RWP) mobility model, whereas uniform incidence angle is used to model the random orientation of the UD. Novel closed-form expressions for the probability density function and the cumulative distribution function of the instantaneous received SNR are derived. Based on this, closed-form expressions of typical performance measures, such as the outage rate probability (ORP) and the average symbol error probability (SEP) are also derived. The accuracy of the derived expressions are validated through extensive simulations and the effect of mobility and random orientation of the UD on the performance of the system are then evaluated. Our results show that the UD's random orientation degrades the system performance.
机译：本文研究了移动用户的信噪比（SNR）统计的信号，在室内可见光通信（VLC）系统中随机取向。所考虑的系统模型由接入点（AP）和移动用户设备（UD）组成，其具有随机取向，这使得瞬时接收的SNR随机。 AP和UD之间的距离通过随机航点（RWP）移动模型建模，而均匀的入射角用于模拟UD的随机取向。推导出用于概率密度函数的新型闭合表达和瞬时接受SNR的累积分布函数。基于此，还导出了典型性能测量的封闭式表达，例如中断率概率（ORP）和平均符号误差概率（SEP）。然后，通过广泛的模拟验证衍生的表达式的准确性，然后评估UD对系统性能的移动性和随机取向的影响。我们的结果表明，UD的随机方向会降低系统性能。

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