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Table 2 Spectrum occupancy: the ISM band

From: Removing non-stationary noise in spectrum sensing using matrix factorization

  Energy detection (ITU-based) AGC removal (step 1) AGC removal (step 2)
2400–2483.5 MHz 34.92% 32.77% 21.85%
Channel 1 37.36% 35.02% 24.53%
Channel 6 37.45% 35.00% 23.79%
Channel 11 37.13% 35.17% 24.46%
  1. The occupancy results for the 2.4 GHz ISM band. The results show that the occupancy based on the energy detection (ITU recommended threshold) method provides an overestimation of the spectrum usage.