NeTS: Small: Collaborative Research: Multi-Element Illuminication for Mobile Free-Space-Optical Networks

NeTS：小型：协作研究：移动自由空间光网络的多元素照明

• 批准号: 1422062
• 负责人: Nezih Pala
• 金额: $ 25万
• 依托单位: Florida International University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-15 至 2019-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1422062&HistoricalAwards=false
• 关键词: NeTS; Small; Collaborative; Research; Multi

As anyone who has used WiFi in urban environments knows, there is interference between multiple competing users and loss of throughput. Wireless home networks are not just for casual web browsing, but are also being used to stream high-quality video to tablets and other portable devices. Interference between access points degrades the user experience for these applications. One method being proposed to address the increased demand for high-capacity local-area wireless networking is Free-space-optical communication (FSOC). In parallel, solid-state lighting (SSL) devices with multiple light emitting diodes (LEDs) are being deployed and commercialized due to their superior durability and energy efficency. Though stemming from the same core optoelectronics technology, SSL and FSOC have inherent tradeoffs: the illuminated area is larger when the divergence angle of the optoelectronic transmitter is high, whereas the transmission range is longer when it is small. This project envisions multi-element "illuminication" modules that perform joint and adaptive optimization of two conflicting goals: illumination and communication. Such modules and protocols are potentially deployable in many settings such as residential and commercial buildings, airplanes, and other RF-limited environments.This projects is developing a framework to design, optimize and test illumination-communication technologies considering needs and requirements for both functionalities. To attain mobile illuminication with high spatial reuse and throughput, and uniformly high illuminance; the project designs (i) multi-element illuminication modules which uses spherical structures for spatial reuse and uniform illumination, (ii) adaptive intensity control for energy saving and chromacity control over red-green-blue LEDs, (iii) transceivers with varying field-of-view and divergence angle, (iv) automatic realignment protocols using electronic steering and focusing for mobility, (v) cognitive algorithms for transceiver selection, and (vi) optical wireless localization with high accuracy.

在城市环境中使用过 WiFi 的人都知道，多个竞争用户之间会产生干扰并导致吞吐量损失。 无线家庭网络不仅用于休闲网页浏览，还用于将高质量视频传输到平板电脑和其他便携式设备。 接入点之间的干扰会降低这些应用程序的用户体验。 为满足对高容量局域无线网络日益增长的需求而提出的一种方法是自由空间光通信（FSOC）。 与此同时，具有多个发光二极管 (LED) 的固态照明 (SSL) 设备由于其卓越的耐用性和能效而得到部署和商业化。尽管源于相同的核心光电技术，但SSL和FSOC具有固有的权衡：光电发射器的发散角高时，照射面积更大，而发射器发散角小时，传输范围更长。该项目设想了多元素“照明”模块，对照明和通信这两个相互冲突的目标进行联合和自适应优化。此类模块和协议有可能部署在许多环境中，例如住宅和商业建筑、飞机和其他射频受限环境。该项目正在开发一个框架，用于设计、优化和测试照明通信技术，同时考虑这两种功能的需求和要求。实现空间复用率高、通量大、照度均匀的移动照明；该项目设计 (i) 多元件照明模块，使用球形结构实现空间再利用和均匀照明，(ii) 自适应强度控制，用于节能和红绿蓝 LED 色度控制，(iii) 具有不同场的收发器视角和发散角，(iv) 使用电子转向和聚焦实现移动性的自动重新对准协议，(v) 用于收发器选择的认知算法，以及 (vi) 高精度光学无线定位。