CRII: NeTS: Towards Ultra-High-Speed Mobile Visible Light Communication

CRII：NeTS：迈向超高速移动可见光通信

• 批准号: 1755925
• 负责人: Ashwin Ashok
• 金额: $ 17.5万
• 依托单位: Georgia State University Research Foundation, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-08-01 至 2020-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1755925&HistoricalAwards=false
• 关键词: CRII; NeTS; Towards; Ultra; Speed

Radio frequency-based wireless communications plays a huge role in our modern society. However, the significant growth in the wireless data traffic has initiated the need for expanding the range of frequencies used for wireless communication. Visible Light Communication (VLC), where light is used as a medium for communication, has garnered significant attention over recent years due to its potential for ultra-high speeds. However, with rapid advancements in VLC, the communication speeds achieved so far are orders of magnitude less than its potential Terabits-per-second (Tbps) capacity. There is an urgent need for a breakthrough in VLC data speeds, and this project attempts to move toward it through a novel system architecture to support ultra-high data rates. The project will take advantage of industry meetings to disseminate outcomes and provides a variety of appealing educational activities involving high school and undergraduate students. This project makes an experimental VLC kit available to the community and makes the hardware, software implementation and data generated available to the public.Theoretical models estimate VLC information capacity to be of the order of Tbps, however, practical limitations in receiver designs have limited state-of-the-art VLC prototypes to data rates that are lower by orders of magnitude. To achieve high-speed reception, this project combines the fast sampling nature of photodiodes and the noise isolation property of imaging array structures into a unified structure that emulates a high-speed image sensing receiver. This project designs a novel VLC receiver architecture integrating a photodiode and an LCD array that acts as a pixelated shutter. Through this unified design, the receiver selects the exact area over which the transmitted signal is detected on the array, thus isolating actual light signal from ambient noise reaching the photodiode, resulting in a dramatic increase in the Signal to Noise Ratio (SNR). The signal isolation and SNR enhancement is enabled by the spatio-temporal mechanisms for selective signal reception and tracking on the LCD array. To achieve a larger field-of-view for reception, the receiver is fit with an 180-degree panoramic lens. This project develops a model to understand the relationship between spatial mobility and the light signal's location on the array and its strength and sets a baseline for designing signal tracking mechanisms to address mobility in high-speed VLC systems.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

基于射频的无线通信在现代社会中发挥着巨大作用。然而，无线数据流量的显着增长引发了扩展无线通信频率范围的需求。可见光通信（VLC）使用光作为通信媒介，近年来由于其超高速的潜力而受到广泛关注。然而，随着 VLC 的快速发展，迄今为止实现的通信速度比其潜在的每秒太比特 (Tbps) 容量要低几个数量级。 VLC 数据速度迫切需要突破，该项目试图通过一种新颖的系统架构来支持超高数据速率。该项目将利用行业会议来传播成果，并提供各种吸引高中生和本科生参与的教育活动。该项目向社区提供实验性 VLC 套件，并向公众提供硬件、软件实现和生成的数据。理论模型估计 VLC 信息容量为 Tbps 量级，然而，接收器设计的实际限制有限。最先进的 VLC 原型的数据速率降低了几个数量级。为了实现高速接收，该项目将光电二极管的快速采样特性和成像阵列结构的噪声隔离特性结合到一个模拟高速图像传感接收器的统一结构中。该项目设计了一种新颖的 VLC 接收器架构，集成了光电二极管和充当像素化快门的 LCD 阵列。通过这种统一设计，接收器可以选择在阵列上检测到传输信号的精确区域，从而将实际光信号与到达光电二极管的环境噪声隔离，从而显着提高信噪比 (SNR)。 LCD 阵列上选择性信号接收和跟踪的时空机制可实现信号隔离和 SNR 增强。为了实现更大的接收视野，接收器配备了180度全景镜头。该项目开发了一个模型来了解空间移动性与光信号在阵列上的位置及其强度之间的关系，并为设计信号跟踪机制以解决高速 VLC 系统中的移动性问题奠定了基础。该奖项反映了 NSF 的法定使命，并具有通过使用基金会的智力优点和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Motion Characterization for Vehicular Visible Light Communications

• DOI: 10.1109/comsnets.2019.8711047
• 发表时间: 2019-01-01
• 期刊: 2019 11TH INTERNATIONAL CONFERENCE ON COMMUNICATION SYSTEMS & NETWORKS (COMSNETS)
• 作者: Ashraf, Khadija;Islam, S. M. Towhidul;Ashok, Ashwin
• 通讯作者: Ashok, Ashwin

Demo : Intelligent Vehicular Perception of Non-Line-of-Sight Environment using Visible Light Communication with Stereo Cameras

演示：使用可见光通信与立体相机进行非视距环境的智能车辆感知

• DOI: 10.1109/vnc48660.2019.9062817
• 发表时间: 2019
• 期刊: IEEE Vehicular Networking Conference
• 作者: Varadarajan, Vignesh;Ashraf, Khadija;Ashok, Ashwin
• 通讯作者: Ashok, Ashwin

Enabling Multiple Access in Visible Light Communication Using Liquid Crystal Displays: A Proof-of-Concept Study

• DOI: 10.3390/electronics9050826
• 发表时间: 2020-05-01
• 期刊: ELECTRONICS
• 影响因子: 2.9
• 作者: Rahman, M. D. Rashed;Adedara, Kehinde;Ashok, Ashwin
• 通讯作者: Ashok, Ashwin

High Throughput Mobile Visible Light Communication

高吞吐量移动可见光通信

• DOI: 10.1109/percomworkshops48775.2020.9156224
• 发表时间: 2020
• 期刊: IEEE Pervasive Computing and Communications
• 作者: Rahman, Rashed;Ashok, Ashwin
• 通讯作者: Ashok, Ashwin

A Novel Architecture for Ultra-High Signal-to-Interference-Noise-Ratio Reception in Visible Light Communication

可见光通信中超高信干噪比接收的新颖架构

• DOI: 10.1109/comsnets.2019.8711377
• 发表时间: 2019
• 期刊: 11th International Conference on Communication Systems & Networks (COMSNETS
• 作者: Rahman, MD Rashed;Islam, S M;Ashok, Ashwin
• 通讯作者: Ashok, Ashwin