Log distance path loss or log-normal shadowing model

1. What is the difference between log distance path loss model and log normal shadowing?
2. What is log normal shadowing?
3. What are the two types of path loss model in wireless communication?

What is the difference between log distance path loss model and log normal shadowing?

Log distance path loss model

The model encompasses random shadowing effects due to signal blockage by hills, trees, buildings etc. It is also referred as log normal shadowing model. for a large cell.

What is log normal shadowing?

The log-normal distribution describes the random shadowing effects which occur over a large number of measurement locations which have the same T-R separation, but have different levels of clutter on the propagation path. This phenomenon is referred to as log -normal shadowing.

What are the two types of path loss model in wireless communication?

There are various types of path loss models in which few are two ray ground path model, free space path model and long distance path model .