Dynamic Spectrum Access (DSA) is becoming a key enabler for wireless communication technologies. Many DSA concepts—such as the Citizens Broadband Radio Service and TV White Space—rely on spectrum databases to identify available radio channels. However, propagation models and other assumptions used by these databases are usually poor for the given scenario, typically leading to over-conservative calculations in terms of permitted secondary spectrum access, geographical bounds or transmit powers in order to mitigate perceived interference risk. Spectrum sensing allows better understanding of the actual propagation and actual channel impulse response, allowing spectrum databases to tune their propagation models to increase the availability of spectrum for secondary access as assessed by such spectrum databases, or to increase the availability of local access licenses as assessed by the telecommunications regulator. A critical limitation on the uptake of ubiquitous sensing is that measurement systems are either proprietary or do not have commercial use-cases; hence little economy of scale exists to drive deployment. For this reason, the IEEE 802.15.22.3 Task Group was formed to standardize a Spectrum Characterization and Occupancy Sensing (SCOS) system capable of addressing a wide range of sensing tasks and be easily and flexibly deployed across a variety of hardware options. This paper provides a high-level description of this system and a first testbed implementing the standard in a laboratory-controlled environment. Preliminary performance assessments are also reported, where it is shown that the system is able to detect users with a power level down to −80 dBm with a probability of detection equal to 1 and controlled false alarm rates.

中文翻译：

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IEEE 802.15.22.3 频谱表征和占用感应应用测试台

动态频谱接入 (DSA) 正在成为无线通信技术的关键推动因素。许多 DSA 概念（例如 Citizens Broadband Radio Service 和 TV White Space）依赖于频谱数据库来识别可用的无线电频道。然而，这些数据库使用的传播模型和其他假设对于给定的场景通常很差，通常会导致在允许的二级频谱访问、地理边界或发射功率方面的计算过于保守，以减轻感知到的干扰风险。频谱感知可以更好地了解实际传播和实际信道脉冲响应，允许频谱数据库调整其传播模型，以增加此类频谱数据库评估的二级访问频谱的可用性，或增加电信监管机构评估的本地接入许可证的可用性。普遍存在传感应用的一个关键限制是测量系统要么是专有的，要么没有商业用例；因此，几乎没有规模经济来推动部署。出于这个原因，IEEE 802.15.22.3 任务组的成立是为了标准化频谱表征和占用传感 (SCOS) 系统，该系统能够处理广泛的传感任务，并且可以轻松灵活地部署在各种硬件选项中。本文提供了该系统的高级描述，以及在实验室控制环境中实施该标准的第一个测试平台。还报告了初步绩效评估，