I/UCRC FRP: Exploiting Self-interference Suppression and Full-duplex Capabilities in Opportunistic Wireless Systems

无线设备在同一信道上实现同时发送和接收（星星）的能力通常被认为是不可能的，直到最近，其中几个研究人员已经证明了在经典静态频谱设置中使用自干扰抑制（SIS）技术的组合进行全双工（FD）通信的可能性。在这个项目中，PI将在机会动态频谱接入（DSA）系统的背景下探索SIS的一个完全不同的应用场景。该项目预计将对机会无线系统产生重大影响，提高其容量并使其能够支持实时流量。这将最终导致新一代具有FD功能的无线设备的激增。所提出的技术可以应用于许多上下文中，包括机会超级WiFi接入点（例如，由IEEE在其802.11af标准中进行标准化的White-Fi系统）、在二级基础上利用蜂窝频带的毫微微蜂窝、在竞争或共享频谱环境中运行的军用无线电、具有抗干扰能力的卫星无线电等。除了成果传播和课程开发外，PI还将开展一系列教育和外展活动，包括在会议上提供教程和特邀会议，为DSA系统编辑FD特刊等。PI还将与BWAC I/UCRC行业合作伙伴合作，在其频谱灵活的无线电平台上演示拟议解决方案的样本。所提出的项目的关键成果可能包括：（1）SIS技术到机会DSA系统的新集成;（ii）优化的模式选择策略，其使得一对DSA设备能够根据观察到的信道占用简档、业务条件和SIS能力在各种通信模式之间动态地交替;（iii）在考虑各种非理想性的情况下，在基于能量和签名的感测下，对具有FD能力的DSA链路的关键性能度量进行理论分析和验证;（iv）用于具有异构SIS级别的多信道FD使能DSA网络的信道接入和信息交换协议;以及（vi）用于具有FD能力的机会网络的自适应频谱切换机制。

The ability of a wireless device to achieve simultaneous transmission and reception (STAR) over the same channel has generally been deemed impossible, until recently, where several researchers have demonstrated the possibility of full-duplex (FD) communications using a combination of self-interference suppression (SIS) techniques, in classical static-spectrum settings. In this project, the PIs will explore a completely different application scenario for SIS, in the context of opportunistic dynamic spectrum access (DSA) systems. The project is expected to have big impacts on opportunistic wireless systems, boosting their capacity and enabling them to support real-time traffic. This will ultimately lead to the proliferation of a new generation of FD-capable wireless devices. Proposed techniques can be applied in many contexts, including opportunistic super-WiFi access points (e.g., White-Fi systems, standardized by IEEE in its 802.11af standard), femto cells that utilize cellular bands on a secondary basis, military radios that operate in contested- or shared-spectrum environments, satellite radios with anti-jamming capabilities, etc. PIs will integrate their findings in relevant graduate courses. In addition to results dissemination and curriculum development, PIs will carry out a number of educational and outreach activities, including giving tutorials and invited sessions at conferences, guest-editing special issues on FD for DSA systems, etc. PIs will also collaborate with BWAC I/UCRC industry partners to demonstrate a sample of the proposed solutions on their spectrum-agile radio platforms. Key outcomes of the proposed project might include: (1) novel integration of SIS techniques into opportunistic DSA systems; (ii) optimized mode-selection strategies that enable a pair of DSA devices to dynamically alternate between various communication modes, depending on observed channel occupancy profile, traffic conditions, and SIS capabilities; (iii) theoretical analysis and validation of key performance metrics for an FD-capable DSA link under energy- and signature-based sensing, considering various non-idealities; (iv) a channel access and information exchange protocol for a multi-channel FD-enabled DSA network with heterogeneous SIS levels; (v) a cooperative sensing mechanism for an FD-enabled DSA network with diverse sensing and SIS levels; and (vi) an adaptive spectrum handoff mechanism for an FD-capable opportunistic network.