fading models

Fading models describe how the strength of a wireless signal varies over distance and obstacles, affecting the quality of communication. Different models simulate variations caused by factors like reflection, diffraction, and scattering of radio waves in the environment. For example, some models assume the signal fluctuates randomly (fast fading), while others show gradual decreases in signal strength over distance (slow fading). These models help engineers design reliable communication systems by predicting how signals behave in specific settings, ensuring devices can maintain strong connections despite environmental changes.