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(STAR)的能力通常被认为是不可能的，直到最近，几位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，PIS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主义的无线系统产生重大影响，提高它们的容量，使它们能够支持实时流量。这最终将导致新一代支持FD的无线设备的激增。提议的技术可应用于许多情况，包括机会主义超WiFi接入点(例如，由IEEE在其802.11af标准中标准化的白色-Fi系统)、次级利用蜂窝频段的毫微微小区、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。除成果发布和课程开发外，私人专业人员还将开展多项教育和外展活动，包括在会议上提供教程和特邀会议、为DSA系统编辑关于FD的特刊等。PIS还将与BWAC I/UCRC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。建议项目的主要成果可能包括：(1)将SIS技术新颖地集成到机会主义DSA系统中；(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情况、业务状况和SIS能力在各种通信模式之间动态地切换；(Iii)在基于能量和签名的感测下，考虑各种非理想情况，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)用于具有不同SIS级别的启用FD的多信道DSA网络的信道接入和信息交换协议；(V)用于具有不同感测和SIS级别的启用FD的DSA网络的协作侦听机制；以及(Vi)用于支持FD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.