EAGER: Collaborative Research: Joint Adaptation of Multiple Cognitive Systems without Explicit Coordination

认知无线系统是能够通过观察、探索和学习来智能地适应环境的无线网络实体的集合。该项目设计了认知无线电系统竞争不同频谱资源的方法，并在没有明确协调的情况下建立了频谱礼仪。每个系统的资源利用策略必须仅根据其他系统操作的不完善信息来决定，由此产生的适应必须阻止任何一个系统操纵商定的频谱规范。采用非完全私人监控的动态博弈框架，设计了认知无线电系统共享异质资源的共存机制，并分析了这些机制的稳定性、健壮性、复杂性和收敛特性。这项工作直接影响到频率捷变无线系统的开发和标准化，这些系统可以更有效地利用可用的频谱，以支持日益增长的高数据速率泛在无线连接需求。该项目是美国(弗吉尼亚理工大学和休斯顿大学)和芬兰(奥卢大学)研究人员共同努力的成果。这项工作将通过结合以下能力来扩展认知系统适应的最新水平：在不完全信息下有效地适应；公平地共享不同种类的资源；以及阻止自私的对手操纵资源使用。结果将在高影响力的期刊和会议上传播；设计的共存机制也将提交给美国和欧洲的行业和监管机构。

Cognitive wireless systems are a collection of wireless network entities that are able to adapt intelligently to the environment through observation, exploration and learning. This project designs methods for cognitive radio systems to compete for inhomogeneous spectrum resources and to establish, without explicit coordination, a spectrum etiquette. Each system's resource utilization strategy must be decided with only imperfect information of other systems' actions, and the resulting adaptations must discourage any one system from manipulating the agreed spectrum etiquette. The framework of dynamic games with imperfect private monitoring is adopted to design coexistence mechanisms for cognitive radio systems sharing inhomogeneous resources and to analyze the stability, robustness, complexity, and convergence of these mechanisms. This work directly impacts the development and standardization of frequency agile wireless systems that can more efficiently use the available spectrum to support increasing demand for ubiquitous wireless connectivity at high data rates. The project is a collaborative effort between researchers in the US (at Virginia Tech and the University of Houston) and Finland (at the University of Oulu). This work will extend the state of the art in cognitive system adaptations by incorporating the ability to: efficiently adapt under imperfect information; fairly share inhomogeneous resources; and discourage manipulation of resource use by selfish adversaries. Results will be disseminated in high impact journals and conferences; the designed coexistence mechanisms will also be presented to industry and regulators in the US and Europe.