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Multiplatform spectrum sensing prototype

Abstract:

Smart spectrum sharing initiatives have been stimulated by the spectrum scarcity experienced nowadays. The option that secondary users may access idle channels avoiding harmful interferences to primary users is a viable option to alleviate the spectrum crunch. In this line, it is necessary to identify, in a reliable way, the real status of spectrum bands and know if the selected frequencies are used or not by the incumbent. We propose a multiplatform spectrum sensing prototype, which is capable to sense the UHF TV frequency bands from 500 MHz to 700 MHz (Channels 19 to 51) and identify the characteristic features of the primary users. Combining a high accurate spectrum analyzer, an open source RF Explorer and an RTL SDR receptor we obtain information of the TV spectrum and know its usability. Analyzing the information collected by three above mentioned devices, it is possible to identify the TV white spaces in our interest frequencies and learn about the parameters to be sensed with a low-end device with high accuracy. Results obtained shows the active channels and the availability of TV white spaces in the City of Windsor.