The term wave propagation refers to the movement of waves.
All waves have frequency, amplitude, wavelength, and wave speed.
Wave propagation speed quantifies how fast the wave travels.
In general, radio wave propagation consists of three main attributes: reflection, diffraction and scattering (see Figure 3.1) [2].
Reflection occurs when radio wave propagating in one medium impinges upon another medium with different electromagnetic properties.
Superimposed on this slowly-varying mean is the fast fading which is caused by multipath propagation in the immediate vicinity of the receiver.
Reflection, diffraction, and scattering are the three basic propagation mechanisms that impact propagation in mobile communication systems.