NeTS: Small: RUI: Hybrid Visible-Light and Radio-Frequency Communications with Integrated Medium-Access Control

NeTS：小型：RUI：具有集成介质访问控制的混合可见光和射频通信

• 批准号: 1618646
• 负责人: Siddhartan Govindasamy
• 金额: $ 9.83万
• 依托单位: Franklin W. Olin College of Engineering
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-10-01 至 2019-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1618646&HistoricalAwards=false
• 关键词: NeTS; Small; RUI; Hybrid; Visible

The explosion in demand for wireless communications has resulted in the crowding of the electromagnetic spectrum. To service the exponentially increasing demand forecast for the near future, new technologies and frequency bands need to be considered. One such technology is Visible-Light-Communications (VLC), where light-emitting diode (LED) based lighting systems can be used to transmit data while also providing illumination. The visible-light spectrum provides a very large bandwidth of electromagnetic spectrum that has the potential to help alleviate the spectral crunch. This proposed effort addresses the challenge of tightly integrating VLC communications with Radio-Frequency (RF) communications, where the RF channel is used only when a VLC link cannot be established, and for upstream data transmissions between users and access points since the upstream link poses a number of challenges for VLC including significant glare that would result from high-powered lights on mobile devices, and high power consumption. The PI proposes to develop practical, efficient protocols and algorithms for hybrid VLC-RF communications systems. The PI works in an undergraduate-only institution and will work with undergraduate students in this project. Additionally, the PI plans to work with a youth teacher program to educate middle- and high-school aged children on the fundamentals of digital communications, using VLC as an example technology. Successful completion of this project will be a major step towards making VLC-RF systems practical which will help service the increased demand for wireless data communications in the future, and help train the next generation of engineers. The PI proposes to design, develop, and implement in hardware, hybrid RF-VLC systems with integrated Medium-Access Control (MAC), which also provide illumination. The proposed program will involve 1) designing, simulating and implementing a VLC-RF MAC protocol; 2) developing and integrating into the system, physical layer algorithms that exploit channel information that can realistically be obtained through MAC protocol interactions; and 3) optimizing the MAC protocol for Room-Division Multiplexing (RDM). The fact that the proposed systems will have integrated MACs, enables practical VLC-RF systems for which physical layer implementation is decoupled from higher layers, which is an important principle of modular communications system designs. Optimizing the system for RDM can potentially increase data rates significantly due to the higher spectral re-use on the VLC enabled downlink of the hybrid system. Successful completion of this project will help make VLC a practical and modular communications system, which can lead to improved internet access, particularly in dense urban environments.

对无线通信的需求爆炸导致电磁频谱的拥挤。为了为在不久的将来呈指数增长的需求预测，需要考虑新的技术和频段。一项这样的技术是可见光通信（VLC），其中发光二极管（LED）的照明系统可用于传输数据，同时也提供照明。可见光光谱提供了非常大的电磁频谱带宽，具有帮助减轻光谱紧缩的潜力。这项提出的努力解决了将VLC通信与射频通信（RF）通信紧密整合在一起的挑战，在该通信中仅在无法建立VLC链接时才使用RF频道，并且对于用户和访问点之间的上游数据传输，因为上游链接对VLC构成了许多挑战，这些挑战会引起高度攻击的挑战，并在高度启动的范围内构成了高度启动的挑战。 PI建议为混合VLC-RF通信系统开发实用，高效的协议和算法。 PI在只有本科机构工作，并将与该项目的本科生合作。此外，PI计划与青年教师计划合作，以使用VLC作为示例技术来教育中学和高中年龄的儿童有关数字通信的基础知识。该项目的成功完成将是使VLC-RF系统实用的重要一步，该系统将有助于满足对将来对无线数据通信的增加的需求，并帮助培训下一代工程师。 PI建议在硬件，混合RF-VLC系统中设计，开发和实施具有集成中等访问控制（MAC）的混合RF-VLC系统，该系统也提供照明。提出的程序将涉及1）设计，模拟和实施VLC-RF MAC协议； 2）开发并集成到系统中，可以利用可以通过MAC协议交互实际获得的通道信息的物理层算法； 3）优化MAC协议以进行房间分区多路复用（RDM）。所提出的系统将具有集成的MAC，启用实用的VLC-RF系统，该系统可以将物理层实现与较高层解耦，这是模块化通信系统设计的重要原理。 优化RDM系统可以显着提高数据速率，因为在VLC上启用了混合系统的下行链路上的较高的光谱重复使用。该项目的成功完成将有助于使VLC成为实用和模块化的通信系统，这可以改善Internet访问，尤其是在茂密的城市环境中。