Multiple-Input Multiple-Output Diffuse Optical Local Area Networks

ECS-0524200卡皮尔河Dandekar，Drexel大学该集成系统提案的重点是利用多输入多输出（MIMO）技术开发漫射光局域网（LAN）。 MIMO理论在发射器和接收器处均利用阵列，其最初是在射频通信领域中构思和大量开发的，以增加频谱容量和链路鲁棒性。 传统的光学系统是点对点的，利用直接的视线连接。 然而，当信号被阻塞或系统未对准时，数据速率受到严重限制。 漫射光网络以降低接收光功率和降低数据速率为代价克服了视线通信链路的阻塞和对准问题。 该项目的智力价值涉及应用MIMO技术，包括先进的空时编码算法，在一个漫射光无线网络测试平台，以克服光功率限制，提高系统的数据速率。 将设计和构建由红外源、探测器、滤波器和透镜组成的收发模块和漫射光学MIMO网络。 此外，还将构建模块化软件定义无线电框架中的混合系统，协调使用漫射光学和射频收发器，以证明室内LAN应用中的能源效率，鲁棒性和安全性。 将使用所提出的混合系统来证明用于改善下一代通信网络的“模态多样性”的概念。 更广泛的影响：这项工作将获得更广泛的影响超出了既定的研究目标，因为我们将培养高中生对科学和工程的兴趣，以及开发研究生跨媒体网络课程。

ECS-0524200Kapil R. Dandekar, Drexel UniversityThis integrative systems proposal focuses on the development of a diffuse optical local area network (LAN) making use of Multiple-Input, Multiple-Output (MIMO) techniques. MIMO theory, utilizing arrays at both the transmitter and the receiver, was originally conceived and largely developed in the realm of radio frequency communications to increase spectral capacity and link robustness. Traditional optical systems have been point-to-point, utilizing a direct line-of-sight connection. However, when the signal is blocked or the system is misaligned, the data rate is severely limited. Diffuse optical networks overcome the blockage and alignment issues of line-of-sight communication links at the cost of reduced received optical power and lower data rate. The intellectual merit of this project involves applying MIMO techniques, including advanced space-time coding algorithms, in a diffuse optical wireless network testbed to overcome optical power limitations and increase the data rate of the system. The transceiver modules and the diffuse optical MIMO network consisting of infrared sources, detectors, filters, and lenses will be designed and constructed. Furthermore, a hybrid system in a modular, software defined radio framework, making coordinated use of both diffuse optical and radio frequency transceivers to demonstrate increased energy efficiency, robustness, and security in indoor LAN applications will also be constructed. The concept of "modality diversity" for improving the next generation communication networks will be demonstrated using the proposed hybrid systems. Broader Impacts: This work will obtain broader impacts beyond the stated research goals, as we will foster an interest in science and engineering among high school students, as well as develop a graduate cross-medium networking course.