Design of spectrum sensing experiments based on LabVIEW and USRP

摘要

Spectrum sensing is the primary task of cognitive radio technology. How to monitor the radio signal in space real-timely and efficiently is a hotspot and difficult point of the research about spectrum sensing technology. In order to improve the experimental teaching effect and students' understanding of cognitive radio technology, this paper builds a spectrum sensing platform based on LabVIEW and USRP, which is useful to train students' practical ability and innovation ability of spectrum sensing technology. By using energy detection method, we carry out dynamic spectrum sensing experiment and spectral scanning experiments. Dynamic spectrum sensing experiments show the spectrum usage in the 95MHz-105MHz and 950MHz-960MHz frequency bands. Spectrum scanning experiments are conducted on the 70MHz-170MHz and 900MHz-1GHz frequency bands and show the spectrum usage of that two bands.