CAREER:Smart-Radio-Technology-Enabled Opportunistic Spectrum Utilization

频谱是世界上最昂贵的自然资源之一，由于宽带无线服务的迅速普及，需求正在飙升。 另一方面，初步研究表明，在无线电频谱中存在大量的白色空间或未使用的空间。 因此，限制多功能无线服务的潜在增长的是频谱接入，而不是真正的频谱稀缺。 这个项目的动机是这个困境。 研究了白色空间的合理利用，这对缓解频谱稀缺具有很大的潜力。 该项目的重点是建模和协议设计。 预期的结果包括新的指标，量化的影响，利用白色空间和分析模型，以捕捉空间和时间特性的白色空间，从而更好地了解机会主义频谱利用的潜力。 此外，将开发集中式和分布式算法，以提供动态、高效和公平的机会可用频谱共享。 将为不同的应用场景确定合适的解决方案。 该项目的成果将使研究界受益，并为决策者提供理论数据。 该项目还将加强教育课程，促进代表性不足的群体参与工程学。

Spectrum is among the world's most expensive natural resources and demand is skyrocketing due to the rapid proliferation of broadband wireless services. On the other hand, preliminary studies indicate the presence of a significant amount of white space, or unused space, in the radio spectrum. Thus, it is spectrum access, instead of true spectrum scarcity, that limits the potential growth of versatile wireless services. This project is motivated by this dilemma. Opportunistic utilization of the white space is studied, which has the great potential to mitigate the spectrum scarcity. The project focuses on modeling and protocol design. The expected results include new metrics to quantify the impact of exploiting white space and analytical models to capture the spatial and temporal characteristics of white space, and thus a better understanding on the potentials of opportunistic spectrum utilization. Furthermore, centralized and distributed algorithms will be developed that provide dynamic, efficient, and fair sharing of the opportunistically-available spectrum. Suitable solutions for different application scenarios will be identified. The results of the project will benefit the research community and provide theoretical data for policy-makers. The project will also enhance the education curriculum and foster the participation of under-represented groups in engineering.