Analysis of Modulated Monofractal Noise

Motivated by experiments for measuring the robustness of wireless protocols, this paper presents an analysis of the effects of amplitude modulation (AM) on the spectral properties of monofractal noise. In general, the modulated monofractal noise signal becomes multifractal over the spectral tail. However, in circumstances where a spectral band of interest is small compared to the effective spectral tail, then a power-law decay can account for the modulated noise spectrum. This effective power-law behaviour, however, can be much more correlated than the original monofractal behaviour in the baseband.