Abstract
Objective: Spectrum sensing ensures reliable detection of primary users and white spaces in the channel such that the cognitive users can utilise the unused spectrum. Method: This work concentrates on enhancement in the energy detection based spectrum sensing technique by employing wavelet packet transform in the place of Fast Fourier Transform (FFT) under different wireless channel models. Result: They are plotted using MATLAB. Receiver operating characteristics curve concludes that wavelet packet based method overrules the traditional method. Application: Free spectrum holes could be found out and efficiently utilized.
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