I/UCRC FRP: Collaborative Research: Coexistence of Heterogeneous Secondary Networks for Shared Spectrum Access

频谱共享在实现为无线应用提供新频谱的计划中起着关键作用。如果不解决共存的异构辅助网络之间的干扰问题，频谱共享的好处就无法充分实现。虽然ISM频段的共存问题已经得到了研究，但由于信号的传播特性、在位保护规则以及二次系统PHY/MAC策略的差异，电视频段和其他共享接入频谱（如3.5 GHz频段）的共存问题更为复杂和具有挑战性。迄今为止，大多数研究工作都集中在既有保护上，而对频谱共享背景下二次系统共存的研究很少。提出的研究希望通过1来填补这一空白。研究了利用随机神经网络建模和解决CDM问题的可行性；开发新的单播和多播场景交会技术。该小组计划将项目研究结果纳入各自机构的相关研究生课程。在该项目的第二年，研究人员将在弗吉尼亚理工大学年度研讨会和无线暑期学校共同组织一次关于异构共存和频谱共享的会议，这是一个服务于无线行业的教育推广活动。该小组还建议在相关会议上，包括动态频谱接入和频谱共享技术旗舰会议IEEE DySPAN会议上，发表关于异构共存和频谱共享的教程。该小组还将与雷声公司和空间微公司的行业合作伙伴合作，在其频谱敏捷无线电平台上演示拟议解决方案的样本。

Spectrum sharing plays a key role in realizing plans to make available new swaths of spectrum for wireless applications. The benefits of spectrum sharing cannot be fully realized without addressing interference among coexisting heterogeneous secondary networks. Although coexistence issues in the ISM bands have been studied before, the situation in the TV bands and other shared access spectrum (e.g., 3.5 GHz band) is more complex and challenging due to the signal propagation characteristics, incumbent protection rules, and the disparity of PHY/MAC strategies of secondary systems. To date, most research efforts have focused on incumbent protection, and little attention has been given to the coexistence of secondary systems in the context of spectrum sharing. The proposed research aspires to fill this void by 1. studying the viability of using stochastic neural networks for modeling and solving the CDM problem and 2. developing novel rendezvous techniques for unicast and multicast scenarios.The group plans to integrate project findings in relevant graduate courses at their respective institutions. In the second year of the project, the investigators will jointly organize a session on heterogeneous coexistence and spectrum sharing at the Virginia Tech annual Symposium and Wireless Summer School, which is an educational outreach event that serves the wireless industry. The group also proposes to give a tutorial presentation on heterogeneous coexistence and spectrum sharing at relevant conferences, including the IEEE DySPAN Conference, the flagship conference on dynamic spectrum access and spectrum sharing technologies. The group will also collaborate with our industry partners from Raytheon and Space Micro to demonstrate a sample of the proposed solutions on their spectrum-agile radio platforms.