amplitudimoduloidun
Amplitudimoduloidun is a hypothetical operation in signal processing that consists of applying a modulus to the instantaneous amplitude of a signal, producing a wrap-around of amplitude values within a fixed range while leaving the carrier’s phase reference largely unaltered. The concept is primarily used as a thought experiment or a compact way to study nonlinearly constrained envelopes and their spectral consequences.
Mathematically, let a signal be s(t) with instantaneous amplitude A(t) and phase φ(t), so s(t) ≈ A(t)
Key properties include its deterministic, nonlinear nature and its tendency to introduce harmonic content even when
Variants of the idea allow a time-varying modulus L(t) or a complex-baseband formulation, broadening the range