Experimental evaluation of radio frequency spectrum sensing detectors in TV bands

This paper deals with real time experiments with spectrum sensing in TV bands. First, different spectrum sensing algorithms suitable for fast signal detection of digital TV signals are reviewed. The performance of several selected detectors has been evaluated on data of real TV transmission in Brno region. Three different implementations have been setup - first using the Universal Software Radio Peripheral device, second using PC with data acquisition card sampling the DVB-T tuner intermediate frequency output and the third based on the implementation of energy detector in Xilinx Virtex IV FPGA. Moreover the experiments with decision fusion from heterogeneous detectors have been performed.