关键词：频谱感知；物理实现；自相关的感测系统；移动应用程序；信号识别
摘 要：In this report, we reviewed the requirements and challenges of performing spectrum sensing in the TV band for mobile applications. We described the existing state of this area of research from both a technical and a policy perspective, and reviewed existing theoretical techniques for performing signal detection. We then proposed a novel physical implementation of a spectrum sensing system by using subsampling autocorrelation in the analog domain.