Figure 5
From: Spectrum analysis of digital UPWM signals generated from random modulating signals
(a) histogram of a signal \({x}_{d}\) with samples following a Pearson distribution with parameters \(\mu =0, \sigma =1, {\mu }_{x,3}=0.8, {\mu }_{x,4}=3\) and (b) DFT spectra of the UPWM signal generated from \({{\varvec{x}}}_{d}\), where the even harmonics are denoted with cross markers.
