EARS: GOALI: Low-Power, Multi-Tiered, Shared-Spectrum Access Terminals using Compressive Scanning and On-Top-of-CMOS BAW Filter Banks

感知和利用可用频谱资源的认知移动设备具有潜在的非常广泛的社会影响，从商业和政府到教育和非营利部门。拟议的研究利用团队的跨学科性质和行业-学术合作伙伴关系来实现认知无线电愿景，以增强无线电频谱的接入。工业伙伴关系将具体提供必要的系统和应用背景，以促进更快地将研究转化为实践。三名研究生将在这个高度跨学科的领域接受培训。PIS将进一步发展本科生研究经验(REU)项目，作为扩大本科生参与计划的一部分。随着无线系统继续激增，对即时、空中访问大量内容的需求持续增长，无线电频谱(特别是在500 MHz-6 GHz范围内)是一种日益稀缺的资源。大多数有用的频谱都已获得许可。一些没有许可证的乐队挤满了人，而许多有许可证的乐队没有得到充分利用。认知无线电建议扫描并机会性地共享频谱。如果可以通过持续监控更高优先级的流量来感知和避免冲突，则它们有可能通过机会主义使用来扩展可用频谱。这需要针对频谱扫描和带宽聚合接收器的灵活、低功耗解决方案。本项目在多层共享频谱接入通信系统的背景下研究这些挑战。它专注于扫描并动态使用较高级别用户未充分利用的无线电频谱的第三层认知无线电终端。它提出了新颖的带通压缩频谱扫描器架构和恢复算法，与现有解决方案相比，有望大幅降低功耗和扫描时间。为了实现具有非连续带宽聚合的抗干扰性、可重配置的接收器体系结构，将研究基于CMOS体声波器件的可重配置阵列。行业伙伴关系是提供系统和应用知识以及系统集成专业知识以测试和评估创新的关键。这些跨学科的研究问题对于宽带射频系统来说是很重要的，所提出的解决方案将对多层认知无线电系统产生影响。

Cognitive mobile devices that sense and exploit available spectral resources have the potential for very broad societal impact, from business and government to the education and non-profit sectors.The proposed research leverages the interdisciplinary nature of the team and the industry-academic partnership towards realizing the cognitive radio vision to enhance access to the radio spectrum. The industrial partnership will specifically provide the essential system and application context to facilitate faster translation of the research into practice. Three graduate students will be trained in this highly cross-disciplinary area. The PIs will further develop Research Experience for Undergraduates (REU) projects as part of the program to expand undergraduate participation. As wireless systems continue to proliferate and the demand for instantaneous, over-the-air access to large volumes of content continues to grow, radio spectrum (especially in the 500MHz-6GHz range) is an increasingly scarce resource. Most of the useful spectrum has been licensed. A few license-free bands are crowded to capacity, while many licensed bands are underutilized. Cognitive radios propose to scan and opportunistically share spectrum. They have the potential for expanding the available spectrum through opportunistic use, if conflict can be sensed and avoided by continuously monitoring higher priority traffic. This requires agile, low-power solutions for spectrum scanning and bandwidth aggregation receivers. This project studies these challenges in the context of a multi-tiered shared-spectrum access communication system. It focuses on tier-3 cognitive radio terminals that scan and dynamically use radio spectrum that is underutilized by higher tier users. It proposes novel bandpass compressed spectrum scanner architectures and recovery algorithms, that promise to substantially reduce power consumption and scan time compared to existing solutions. To enable interference-robust, reconfigurable receiver architectures with noncontiguous bandwidth aggregation, reconfigurable arrays of bulk acoustic wave devices fabricated on top of CMOS will be investigated. The industrial partnership is key to provide system and application knowledge, as well as system integration expertise to test and evaluate the innovations. The cross-disciplinary research questions are important for broadband RF systems in general, and the proposed solutions will have impact beyond multi-tiered cognitive radio systems.