  In the present paper, we give a series of definitions and properties of
Lifting Dynamical Systems (LDS) corresponding to the notion of deterministic
diffusion. We present heuristic explanations of the mechanism of formation of
deterministic diffusion in LDS and the anomalous deterministic diffusion in the
case of transportation in long billiard channels with spatially periodic
structures. The expressions for the coefficient of deterministic diffusion are
obtained.
