摘要
频谱感知是感知无线电、动态频谱分配和电子侦听的核心,具有通用性的频谱感知实验可应用于相关的多门课程,在软件无线电平台上设计的频谱感知实验可编程重构,适用于较宽频段和多种信号。该文介绍了USRP与GNU Radio结合的软件无线电平台,讨论了频谱感知的基本原理,设计了基于能量检测的频谱感知实验,并以城市调频广播为例演示了频谱感知实验的过程和结果。
Spectrum sensing is the core of cognitive radio,dynamic spectrum distribution and electronic reconnaissance. Universal experiment of spectrum sensing can be used in many relevant courses. Spectrum sensing experiment can be reconstructed by programming and be applicable to wide frequency range and signal diversity. This paper introduces the software platform with USRP and GNU Radio first. Then basic theory of spectrum sensing is discussed. We design experiments based on energy detection. Finally,frequency modulation broadcasting in city is chosen as an example to show the procedure and results of spectrum sensing.
出处
《实验科学与技术》
2016年第5期16-20,共5页
Experiment Science and Technology
基金
国家自然科学基金(61139003)
关键词
软件无线电
通用软件无线电外设
频谱感知
能量检测
software radio
universal software radio peripheral
spectrum sensing
energy detection
