NeTS: Small: Collaborative Research: OSTARA: An Optically-based Simultaneous Transmit and Receive Architecture for Enhancing Wireless Communications

提高通信频谱资源的利用率对未来的无线系统至关重要。OSTARA项目的重点是开发射频光子技术，支持无线设备同时发送和接收的能力。这项工作包括理论发展（特别是研究容量的潜在改进），以及系统验证工作，包括建立一个光抵消电路，能够消除与同时传输和接收相关的共址干扰。具体来说，这项工作的理论部分将包括使用光线追踪来理解多路径组件对通信速率的消除作用，以及使用图着色来研究理想化消除对网络容量的影响。这项工作的系统部分将包括开发光子电路，从接收器链中减去传输信号，以及传输信号的潜在多径图像。验证将包括在WINLAB的ORBIT测试台上设置测试场景，对光抵消器进行现场测试。更广泛的影响：拟议的研究将提高未来无线系统的频谱利用率，这是一个至关重要的国家问题。此外，该项目还将培养应用于先进无线电系统的射频光子学跨学科领域的学生和博士后。

Improving the usage of communication spectrum resources is critical to future wireless systems. The OSTARA project focuses on the development of RF photonic techniques that support the ability to simultaneously transmit and receive in wireless devices. The effort involves a mix of theoretical development (specifically investigating potential improvements in capacity), as well as systems validation efforts involving building an opto-cancellation circuit capable of cancelling out co-site interference associated with simultaneous transmission and reception. . Specifically, the theoretical component of the effort will involve using ray-tracing to understand the role of cancelation of multipath components on communication rate, as well as an investigation into the impact of idealized cancellation on network capacity using graph coloring. The systems component of the effort will involve developing photonic circuits that subtract off the transmitted signal from the receiver chain, as well as potential multipath images of the transmitted signal. Validation will involve field testing the opto-canceller by setting up test scenarios on the ORBIT testbed at WINLAB.Broader Impact: The proposed research will improve the spectrum utilization of future wireless systems, an issue of critical national importance. Additionally, the project will educate students and post-doctoral fellows in the inter-disciplinary area of RF-photonics as applied to advanced radio systems.