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Collaborative Research: SWIFT: LARGE: Adaptive Interference Rejection with Synthetic Channel Diversity (AIR SynCD)

合作研究：SWIFT：大型：具有合成信道分集的自适应干扰抑制 (AIR SynCD)

基本信息

批准号：
2030207
负责人：
Amal El-Ghazaly
金额：
$ 88万
依托单位：
Cornell University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-09-01 至 2024-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2030207&HistoricalAwards=false
关键词：
Collaborative Research SWIFT LARGE Adaptive

项目摘要

As the demand for wireless services increases and the usable spectrum becomes ever more crowded, wireless systems need to become more robust against interference from many other signals. Radio receivers form the last line of defense, protecting wireless systems from today’s increasingly dynamic and densely occupied spectral environments. This project will develop a novel radio receiver architecture capable of operating across a large portion of the wireless spectrum while simultaneously being capable of adaptively suppressing interferences as they arise. Since interference may change as a function of time and location, an algorithm will be developed to help the receiver adaptively adjust its response to one or more of these interferers so that the system can take advantage of the wireless spectrum whenever and wherever there is a need. Recent explosive growth in internet usage have brought to light humanity’s increasing dependence on wireless access and the significant role wireless radio receivers have in enabling the continued expansion of connectivity. This project has specific plans to educate and train rising engineers, at both the graduate and undergraduate level, to think holistically about the components and operation of wireless systems and establish robust receivers for the future. Specifically, PIs will pilot a new seminar course needed to succeed in a doctoral degree program, which will include managing advisor-advisee relationship, reading and writing research papers, giving effective research presentations, and pursuing a career after graduation. PIs also have plan to partner with Diversity Programs in Engineering at Cornell to recruit incoming doctoral underrepresented minority (URM) students from across all engineering disciplines for the one-hour seminar each week during the Fall semester.The project will horizontally integrate signal processing and algorithm development, circuit design and optimization, and RF component design and tuning to create a new class of receivers able to identify, adapt to, and suppress interference effects while maintaining maximum frequency agility. Research will focus on three integrated and interdependent thrust areas. Design of receiver front-ends that use passive networks (of inductors, capacitors, and other electromagnetic elements) to diversify the inputs from one or more antennas into a larger number of output taps, which then feed into a bank of reduced-power sub-receivers. Such a radio will be able to receive signals from a wide range of frequencies, while providing enough measures of both signal and interference that the byproducts of that interference can be separated from the signals using digital signal processing. This will involve both developing the required circuit theory and optimization tools and designing working prototypes at the printed circuit board and integrated circuit level. Development of digital-domain algorithms to provide control feedback to the front-end to enhance the required diversity for proper suppression. Development of adaptive RF magnetic devices to provide real-time tunability of the passive network. This will involve magnetic material and device development, and require close interaction with the circuit and algorithm designs, to best understand the optimal balance between different component trade-offs, such as between tuning range, component quality factor, and frequency of operation. The proposed new receivers have the potential to enable significant enhancement in adaptive interference mitigation and improve the robustness of future wireless systems.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

随着对无线服务的需求增加以及可用频谱变得越来越拥挤，无线系统需要变得更加鲁棒以抵抗来自许多其他信号的干扰。无线电接收器构成了最后一道防线，保护无线系统免受当今日益动态和密集占用的频谱环境的影响。该项目将开发一种新型的无线电接收器架构，能够在大部分无线频谱上工作，同时能够自适应地抑制干扰。由于干扰可能会随着时间和位置的变化而变化，因此将开发一种算法来帮助接收机自适应地调整其对这些干扰源中的一个或多个干扰源的响应，以便系统可以随时随地利用无线频谱。最近互联网使用的爆炸性增长已经揭示了人类对无线接入的日益依赖以及无线电接收器在实现连接的持续扩展方面的重要作用。该项目有具体的计划，以教育和培训新兴的工程师，在研究生和本科生水平，全面思考无线系统的组件和操作，并建立强大的接收器的未来。具体来说，PI将试点一个新的研讨会课程需要成功的博士学位课程，其中包括管理师生关系，阅读和撰写研究论文，提供有效的研究报告，并追求毕业后的职业生涯。PI还计划与康奈尔大学的工程多样性项目合作，在秋季学期期间每周招募来自所有工程学科的博士生参加一小时的研讨会。该项目将横向整合信号处理和算法开发，电路设计和优化，以及RF组件设计和调谐，以创建一种新的接收器类别，能够识别，适应并抑制干扰效应，同时保持最大频率捷变。研究将重点关注三个综合且相互依存的重点领域。设计接收器前端，使用无源网络（电感器，电容器和其他电磁元件）将来自一个或多个天线的输入多样化到更多的输出抽头，然后馈送到一组降低功率的子接收器。这种无线电将能够接收来自宽频率范围的信号，同时提供足够的信号和干扰测量，可以使用数字信号处理将干扰的副产品与信号分离。这将涉及开发所需的电路理论和优化工具，并在印刷电路板和集成电路层面设计工作原型。开发数字域算法，为前端提供控制反馈，以增强适当抑制所需的多样性。开发自适应RF磁器件，以提供无源网络的实时可调谐性。这将涉及磁性材料和器件开发，并需要与电路和算法设计密切互动，以最好地了解不同组件之间的权衡，例如调谐范围，组件品质因数和工作频率之间的最佳平衡。建议的新接收器有可能使自适应干扰缓解显着增强，提高未来无线系统的鲁棒性。该奖项反映了NSF的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。