Robust Spectrum Sensing Demonstration Using a Low-Cost Front-End Receiver

Figure 7

(a) Screen-shot of the JIM software for SS. The different views of the software GUI are progressively updated showing the signal evolution as a function of the selected centre frequency. (b) Main activity of the Android implementation of the spectrum sensor based on the Realtek RTL2832U front-end. The spectrogram showing the energy estimated in the different bands is progressively depicted in the lower part of the GUI.

(a)

(b)