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Super Receivers for Visible Light Communications

可见光通信的超级接收器

基本信息

批准号：
EP/R00689X/1
负责人：
Steve Collins
金额：
$ 52.53万
依托单位：
University of Oxford
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FR00689X%2F1
关键词：
Super Receivers Visible Light Communications

项目摘要

In the near future, light emitting diodes (LEDs) will replace all other sources of light - from the lamps that light homes and offices to the headlights of cars. As well as providing illumination, these LEDs can be used to transmit data, and so offer an opportunity to create a new wireless infrastructure for data transmission. The demand for wireless communications to smartphones, watches, tablets and other devices is growing at a rate of 50% per year, and new technologies are needed to augment the capacity of conventional WiFi. Using LEDs in visible light communications offers a huge potential capacity to support this growth and to provide new services that use localised wireless communications. While LEDs can transmit the information, an optical receiver is needed to collect the transmitted light, convert it to an electrical signal and extract the transmitted data. The maximum amount of light that can be transmitted is limited by the illumination brightness and concerns for the eye safety and comfort of users. The sensitivity of the receiver therefore ultimately determines the range over which optical data can be transmitted and/or the maximum possible data rate. The sensitivity of existing receivers for visible light communications is limited by a combination of the methods used to collect light and the devices used to convert this light to an electrical signal.In this project we aim to create new super receivers that are significantly more sensitive than existing optical receivers; that overcome conventional limits for combining speed, sensitivity and easy alignment; that are thin and flexible enough to be easily integrated onto any device. A dramatic change in performance will be achieved by combining two technologies- fluorescent concentrators and arrays of single-photon avalanche photodiodes- in a receiver for the first time. The first will use fluorescent materials to absorb the transmitted light signal and re-emit it at a different wavelength onto the detector. Using this method we will collect light over large areas using a thin, flexible layer which guides and concentrates the emitted light to its edges.The second technology is a light detector capable of detecting individual photons. We will develop methods to count photons from the transmitter in the presence of ambient light. We will explore how to optimise the fluorescent materials and light collecting layer to efficiently concentrate light onto one or more light detectors, and develop methods to maximise the amount of data transmitted by optimising how the data is represented. These super receivers will be tested in free-space visible light communications links to quantify their performance. Our estimates suggest that this approach could lead to a 100 times improvement in performance over current receivers, enabling faster data transmission, longer transmission ranges and the ability to operate in difficult environments, such as in the presence of bright ambient light.

在不久的将来，发光二极管(LED)将取代所有其他光源--从照亮家庭和办公室的灯到汽车的前大灯。除了提供照明，这些LED还可以用于传输数据，因此为数据传输提供了创建新的无线基础设施的机会。智能手机、手表、平板电脑和其他设备的无线通信需求正以每年50%的速度增长，需要新技术来增强传统WiFi的容量。在可见光通信中使用LED提供了巨大的潜力来支持这一增长，并提供使用本地化无线通信的新服务。虽然LED可以传输信息，但需要一个光接收器来收集传输的光，将其转换为电信号，并提取传输的数据。可以透过的最大光量受到照明亮度以及对用户眼睛安全和舒适性的担忧的限制。因此，接收器的灵敏度最终确定光数据可以传输的范围和/或最大可能的数据速率。现有可见光通信接收器的灵敏度受到用于收集光的方法和用于将光转换为电信号的设备的组合的限制。在这个项目中，我们的目标是创造新的超级接收器，这种接收器的灵敏度明显高于现有的光接收器；它克服了组合速度、灵敏度和易于对准的传统限制；足够薄和灵活，可以轻松地集成到任何设备上。通过将两种技术--荧光集中器和单光子雪崩光电二极管阵列--首次结合在一个接收器中，性能将发生戏剧性的变化。第一种将使用荧光材料来吸收传输的光信号，并将其以不同的波长重新发射到探测器上。使用这种方法，我们将使用一层薄而灵活的层来收集大面积的光，该层将发射的光引导并集中到其边缘。第二种技术是能够检测单个光子的光探测器。我们将开发在环境光存在的情况下计算发射器发出的光子的方法。我们将探索如何优化荧光材料和光收集层，以有效地将光集中到一个或多个光探测器上，并开发通过优化数据的表示方式来最大化传输数据量的方法。这些超级接收器将在自由空间可见光通信链路中进行测试，以量化它们的性能。我们的估计表明，这种方法可以使性能比目前的接收器提高100倍，从而实现更快的数据传输、更远的传输距离，并能够在困难的环境中运行，例如在明亮的环境光下。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Smart Phones:an example application for fluorescent concentrators

智能手机：荧光聚光器的示例应用

DOI：
10.1109/glc.2019.8864134
发表时间：
2019
期刊：
影响因子：
0
作者：
Collins S
通讯作者：
Collins S

A SiPM-Based VLC Receiver for Gigabit Communication Using OOK Modulation

DOI：
10.1109/lpt.2020.2973200
发表时间：
2020-03-15
期刊：
IEEE PHOTONICS TECHNOLOGY LETTERS
影响因子：
2.6
作者：
Ahmed, Zubair;Singh, Ravinder;Collins, Steve
通讯作者：
Collins, Steve

A SiPM receiver that is compatible with a low-power, exempt 405 nm transmitter.

与低功耗豁免 405 nm 发射器兼容的 SiPM 接收器。

DOI：
发表时间：
2020
期刊：
影响因子：
0
作者：
Ali W
通讯作者：
Ali W

Silicon photomultiplier receivers and future VLC systems

硅光电倍增接收器和未来的 VLC 系统

DOI：
10.1109/gcwkshps50303.2020.9367590
发表时间：
2020
期刊：
影响因子：
0
作者：
Ali W
通讯作者：
Ali W

A Shot-Noise Limited 420 Mbps Visible Light Communication System using Commerical Off-the-Shelf Silicon Photomultiplier (SiPM)

DOI：
10.1109/iccw.2019.8757030
发表时间：
2019-05
期刊：
2019 IEEE International Conference on Communications Workshops (ICC Workshops)
影响因子：
0
作者：
Z. Ahmed;Long Zhang;G. Faulkner;D. O’brien;S. Collins
通讯作者：
Z. Ahmed;Long Zhang;G. Faulkner;D. O’brien;S. Collins