TCHCS: Collaborative Research: Optimal Hybrid RF-Wireless Optical Communication for Maximum Efficiency and Reliability

ECS-0636569H。Pishro-Nik，马萨诸塞大学阿默斯特分校ECS-0636463A。ADIBI，GA理工学院智力优势：麻省大学阿默斯特分校和佐治亚理工学院提出了一种最佳的混合自由空间光/射频点对点通信系统，同时实现了最大的可用性和最大的效率。所提出的通信算法和体系结构背后的概念是两个不同的通道之间的合作。建议的混合系统的核心是混合信道编码方案，该方案使即使在极端的大气条件下也能够保持高数据吞吐量。该编码几乎实现了理论上可能的最高速率，并且消除了在两个不同链路或网络(即，无线和光纤)之间进行切换的需要。当具有极低中断概率的高吞吐量至关重要时，这种通信系统提供了独特的解决方案。研究包括三个强耦合部分：1.分析、设计和实现一种新的速率自适应编码机制以优化使用并行信道；2.设计和实现一种基于硅光电二极管的接收器，其中包括基于混合信道编码的双通道时钟和数据恢复机制；3.设计和实现基于全息图的低成本快速自适应光纤链路。更广泛的影响：在这项研究中开发的混合信道码可以用于其他应用，其中数据通过几个不同的信道进行通信，例如核电站中的光纤/无线电混合频率。该硬件将用于通信系统，也可用于医学成像。混合通信系统是解决最后一英里连接问题的可行方案。灾后恢复和为农村地区提供低成本的高速互联网接入是其对社会的主要好处之一。拟议的多学科研究提供了一个极好的机会，让研究生接触到混合通信系统的多方面问题。学生将解决编码、集成电路和光学领域的挑战性理论问题，并将接受使用复杂设计和实验工具的培训。本科生将参与使用商业上可用的硬件和软件实现原型。

ECS-0636569H. Pishro-Nik, University of Massachusetts Amherst ECS-0636463A. Adibi, GA Institute of TechnologyIntellectual Merit: The University of Massachusetts Amherst and the Georgia Institute of Technology propose an optimal hybrid free space optical/radio frequency point-to-point communication system that simultaneously achieves maximum availability and maximum efficiency. The concept behind the proposed communication algorithms and architectures is cooperation between the two heterogeneous channels. At the heart of the proposed hybrid system is a hybrid-channel coding scheme that makes it possible to maintain a high data throughput, even under extreme atmospheric conditions. The code nearly achieves the highest theoretically possible rates and obviates the need for switching between two different links or networks (i.e., wireless and optical). Such communication system provides a unique solution when a high throughput with an extremely low outage probability is crucial. The research includes three strongly coupled components: 1. Analysis, design, and implementation of a new rate-adaptive coding mechanism to optimally use the parallel channels; 2. Design and implementation of a receiver using a Si-photodiode and including a dual-channel clock and data recovery mechanism based on hybrid-channel coding; 3. Design and implementation of hologram-based low-cost fast-adaptation rate adaptive optics for the optical link. Broader Impact: The hybrid-channel codes developed in this research can be used in other applications where data is communicated over several heterogeneous channels, such as hybrid fiber/radio frequency in nuclear plants. The hardware will be useful in communication systems and also for medical imagery. Hybrid communication system is a viable solution to the last-mile connectivity problem. Disaster recovery and providing low-cost high-speed Internet access to rural areas are among its major benefits to society. The proposed multidisciplinary research provides an excellent opportunity to expose graduate students to the multifaceted problems of a hybrid communication system. Students will solve challenging theoretical problems in the areas of coding, integrated circuits, and optics and they will be trained to use sophisticated design and experimentation tools. Undergraduate students will be involved in implementing prototypes using commercially available hardware and software.