How an input series enters the model is called its transfer function. Thus, ARIMA models with input series are sometimes referred to as transfer function models. In the preceding regression and ...

This is a preview. Log in through your library . Abstract Finite impulse response (FIR) models are among the most basic tools in control theory and signal processing and are routinely used in almost ...

For a rational matrix function Φ with poles outside the unit circle, we estimate the degree of the unique superoptimal approximation 𝒜Φ by matrix functions analytic in the unit disk. We obtain sharp ...