Transparent Coexistence for Multi-Hop Secondary Cognitive Radio Networks: Theoretical Foundation, Algorithms, and Implementation

最近，正在探索辅助节点和主节点的同时激活（或透明共存）的想法。 在这种新范式下，辅助节点单独负责消除它们对主节点的干扰，以便主节点感觉不到辅助节点的存在。 虽然这种新的范例有可能提供更大的频谱效率和网络容量比现有的干扰避免范例下，它仍然处于起步阶段，目前的结果仅限于非常简单的网络设置。 该项目的目标是在多跳二级网络的透明共存范例中取得根本性的进步。 具体而言，本项目旨在研究多跳网络背景下的以下重要问题：（1）为透明共存范式开发新的分析模型;（2）探索多跳次级网络的性能界限和理论极限;以及（3）开发分布式算法，跳变二级网络，可以提供接近全局最佳解决方案的性能。该项目的研究结果预计将通过消除一些基本问题，为研究界做出及时的贡献与透明共存模式相关的障碍。该项目的一项重要教育活动是为无线网络开发新的跨学科课程材料，特别是有效共享无线电频谱。 该项目还计划让本科生和代表性不足的学生参与无线网络研究。

Recently, the idea of simultaneous activation (or transparent coexistence) of secondary and primary nodes is being explored. Under this new paradigm, secondary nodes are solely responsible for canceling their interference with the primary nodes so that the primary nodes do not feel the presence of the secondary nodes. Although this new paradigm has the potential of offering much greater spectrum efficiency and network capacity than those under the existing interference avoidance paradigm, it is still in its infancy and current results are only limited to very simple network settings. The goal of this project is to make a fundamental advance in the transparent coexistence paradigm for multi-hop secondary networks. Specifically, this project aims to study the following important problems in the context of multi-hop networks: (1) developing new analytical models for the transparent coexistence paradigm; (2) exploring performance bounds and theoretical limits for multi-hop secondary networks; and (3) developing distributed algorithms for multi-hop secondary networks that can offer performance approaching that of a global optimal solution.The findings from this project are expected to make a timely contribution to the research community by removing some fundamental barriers associated with the transparent coexistence paradigm. An important educational activity of this project is to develop new cross-disciplinary course materials for wireless networking, particularly efficient sharing of the radio spectrum. This project also has plans to involve undergraduates and under-represented students in wireless networking research.