Cognitive Wireless Networks Based Spectrum Sensing Strategies: A Comparative Analysis

Table 3

Performance comparison of wide band spectrum sensing models.

Sensing strategy	Approach	Merits	Demerits
FFT detector [38]	Nyquist WB	Noncoherent	Require high sampling rate
Wavelet detector [39, 43]	Nyquist WB	Edge detector	High computational complexity
Filter-bank detector [40]	Nyquist WB	High performance	High computational complexity
Compressive sensing [41, 44–49]	Subnyquist WB	Low sampling rate	Dynamic behaviors for sparsity level