Abstract:In cognitive radio (CR), the sensed aggregate bandwidth could be as large as several GHz. This is especially challenging if the bandwidths and central frequencies of the sensed signals are unknown and need to be detected. This work discusses a new method for multi-band spectrum-sensing based in edge detection. The proposed method uses a Welch power-spectrum-density (PSd) estimate and a multi-scale Wavelet approach to reveal the spectrum transition (edges), which is deployed to characterize the spectrum occupan… Show more
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