CRII: NeTS OP: A Software Defined Approach to Laser-based Free Space Optical Networks

CRII：NeTS OP：基于激光的自由空间光网络的软件定义方法

• 批准号: 1657279
• 负责人: Harsha Chenji
• 金额: $ 17.5万
• 依托单位: Ohio University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-02-15 至 2021-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1657279&HistoricalAwards=false
• 关键词: CRII; NeTS; OP; Software; Defined

Free space optical (FSO) communications uses highly directional laser beams instead of radio frequencies to communicate data. FSO communication, especially for wireless networks, can be very low cost in nature for the bandwidth delivered. However, in spite of such obvious advantages, FSO links are rarely used in mobile wireless networks. This award seeks to investigate the leading cause of this phenomenon, namely the high beam alignment delay which poses a major roadblock to the deployment of FSO in mobile networks. Several innovative solutions will be explored in this project: the use of state of the art programmable optical elements that can split the beam into arbitrary patterns and help align the beams quicker, networking protocols that leverage this new capability in order to send data faster, and a novel low cost hardware platform that implements these techniques. Results from this work can improve the performance of the wireless backhaul solutions which is expected to be the basis of emerging access network architectures. As part of the proposed research, participation of underrepresented minorities will be encouraged by involving them in this project. The research outcomes from this project will be rolled back into curricula through the development of a special topics course for graduate students on free space optical communication.In this project, programmable and tunable diffractive optical elements are leveraged to reduce the alignment delay and increase throughput, while new algorithms reconcile the literature on pointing, acquisition & tracking techniques with multi-hop RF-domain neighbor discovery algorithms. A novel FSO frontend for software defined radios, capable of coherent optical communication, will be developed to take advantage of the above enhancements. A simulator model will be extracted from the lessons learned during the hardware design phase, and fed back into the research community.

自由空间光学（FSO）通信使用高度定向的激光束代替无线电频率来传输数据。FSO通信，特别是无线网络，在传输带宽方面的成本非常低。然而，尽管有这些明显的优点，FSO链路很少在移动无线网络中使用。该合同旨在调查这种现象的主要原因，即高光束对准延迟，这是移动网络中部署FSO的主要障碍。该项目将探索几种创新的解决方案：使用最先进的可编程光学元件，可以将光束分割成任意模式，并帮助光束更快地对齐；利用这种新功能的网络协议，以便更快地发送数据；以及实现这些技术的新型低成本硬件平台。这项工作的结果可以提高无线回程解决方案的性能，有望成为新兴接入网架构的基础。作为拟议研究的一部分，将鼓励代表性不足的少数民族参与这一项目。该项目的研究成果将通过为研究生开发一门关于自由空间光通信的专题课程，重新纳入课程。在这个项目中，可编程和可调谐的衍射光学元件被利用来减少对准延迟和提高吞吐量，而新的算法调和了文献中的指向、获取和跟踪技术与多跳rf域邻居发现算法。将开发一种用于软件定义无线电的新型FSO前端，能够进行相干光通信，以利用上述增强功能。模拟器模型将从硬件设计阶段的经验教训中提取出来，并反馈给研究社区。

项目成果

Multicast techniques for hybrid RF/FSO DTNs

• DOI: 10.1364/jocn.9.001051
• 发表时间: 2017-11
• 期刊: IEEE/OSA Journal of Optical Communications and Networking
• 作者: M. Atakora;H. Chenji

Overcoming alignment delay in RF+FSO networks

• DOI: 10.1109/iwcmc.2017.7986358
• 发表时间: 2017-06
• 期刊: 2017 13th International Wireless Communications and Mobile Computing Conference (IWCMC)
• 作者: M. Atakora;H. Chenji

Fast Neighbor Discovery in MEMS FSO Networks

• DOI: 10.1109/icnc47757.2020.9049690
• 发表时间: 2020-02
• 期刊: 2020 International Conference on Computing, Networking and Communications (ICNC)
• 作者: M. Atakora;H. Chenji

A Multicast Technique for Fixed and Mobile Optical Wireless Backhaul in 5G Networks

• DOI: 10.1109/access.2018.2832980
• 发表时间: 2018-05
• 期刊: IEEE Access
• 影响因子: 3.9
• 作者: M. Atakora;H. Chenji

Optimal Multicasting in Hybrid RF/FSO DTNs

• DOI: 10.1109/glocom.2016.7842090
• 发表时间: 2016-04
• 期刊: 2016 IEEE Global Communications Conference (GLOBECOM)
• 作者: M. Atakora;H. Chenji