LiFi迈向5G:概念挑战在远程医疗中的应用

P. Lorenz, Louiza Hamada
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引用次数: 3

摘要

近年来,基于无线连接的设备、应用和服务的数量呈指数级增长,导致我们的生活方式发生了深刻的变化。与传感器和机器连接相关的物联网(IoT)等新概念将放大这一现象。术语“无线”主要指无线电频率(30KHz至300GHz),主要挑战是电磁频谱的饱和。在本文中,我们给出了在短距离运行的Li-Fi(光保真)系统的最重要的问题的调查。我们考虑了这些系统面临的挑战性问题:链路设计和系统要求,发射器和接收器结构,挑战和可能的技术来减轻这些系统的损害,在医学和开放的研究问题中的应用。在Li-Fi中,数据以LED灯泡闪烁的几个比特流传输,并在接收端解码。这以二进制数据传输的形式发生,其中“0”是LED处于“关闭状态”,“1”是LED处于“打开状态”[1]。我们使用这个概念来传输数据(音频信号),以演示用例及其在不断增长的通信领域可能产生的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
LiFi Towards 5G: Concepts Challenges Applications in Telemedecine
In recent years, the number of devices, applications and services based on a wireless connectivity has grown exponentially resulting in deep changes in our ways of living. New concepts such as the Internet of Things (IoT) associated with the connectivity of sensors and machines will amplify this phenomenon. The term “wireless” refers primarily to radio frequencies (30KHz to 300GHz), the main challenge is the saturation of the spectrum electromagnetic. In this paper, we give a survey of the most significant issues Li-Fi (Light Fidelity) systems that operate at short ranges. We consider the challenging issues facing these systems: link design and system requirements, transmitter and receiver structures, challenges and possible techniques to mitigate the impairments in these systems, applications in medicine and open research issues. In Li-Fi, the data are transmitted in several bit-streams flickering of the LED bulb and decoded on the receiver side. This happens in the form of a binary transmission of data, where ‘0’ is the LED in its ‘off-state’ and ‘1’ is the LED in its ‘on-state’ [1]. We use this concept to transmit data (audio signal) to demonstrate the use-cases and the possible impact it can have in the ever growing field of communication.
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