NeTS: Small: Collaborative Research: Distributed Robust Spectrum Sensing and Sharing in Cognitive Radio Networks

未来的认知无线网络（crn）将由智能手机、平板电脑和笔记本电脑等动态移动的异构设备组成。准确、稳健的频谱感知和识别未经授权的频谱使用是未来无线电系统频谱效率的重要组成部分。本项目旨在利用基于共识的合作，以自组织和可扩展的网络结构来捕捉频谱用户的群体行为，并以全分布式的方式提供协同频谱感知。通过结合控制理论和机器学习技术，该项目设计了安全加权平均共识的协同频谱感知，不仅可以捕获具有异构设备的crn中的群集行为，而且对实际信道条件具有鲁棒性。基于动态信号强度映射的鲁棒定位方法具有对多个恶意用户进行定位的能力。此外，新技术还通过校园部署和系统演示的实际测试平台进行了验证。控制理论与动态频谱接入的结合将为crn频谱效率的提高带来新的变革。该项目是利用多学科知识（例如控制系统和机器学习技术）在未来无线电系统中实现更有效的频谱使用的先驱，旨在缓解频谱占用日益拥挤的问题，并支持异构设备共存。该计划还开展了广泛的教育和外展活动，鼓励学生在科学和工程领域从事职业。研究成果将通过在会议、会议和期刊上的演讲和出版物向学术界和工业界传播。

The future Cognitive Radio Networks (CRNs) will consist of heterogeneous devices such as smartphones, tablets and laptops moving dynamically. Accurate and robust spectrum sensing and identification of unauthorized spectrum usage are essential components of spectral efficiency in future radio systems. This project aims to utilize consensus-based cooperation featuring self-organizable and scalable network structure to capture the swarming behaviors of spectrum users and providing cooperative spectrum sensing in a fully distributed manner. By using a combination of control theory and machine learning techniques, the project designs secure weighted average consensus for cooperative spectrum sensing that can not only capture the swarming behaviors in CRNs with heterogeneous devices, but also is robust to practical channel conditions. Robust localization approaches are developed grounded on dynamic signal strength mapping, which have the capability to localize multiple malicious users. Additionally, the new techniques are validated using an actual testbed with on-campus deployment and system demonstration to industrial collaborators. The integration of control theory with dynamic spectrum access will enable a new revolution in the way for enhancing spectrum efficiency in CRNs. The project serves as a pioneer in exploiting multi-disciplinary knowledge (e.g., control systems and machine learning techniques) to achieve a more efficient spectrum usage in future radio systems, aiming to alleviate the increasing crowdness of the spectrum occupancy and support the co-existence of heterogeneous devices. This project also carries out a broad range of education and outreach activities to encourage students to pursue careers in the fields of science and engineering. Research results will be disseminated to academia and industry through presentations and publications in meetings, conferences and journals.