Wireless Channels:Large Scale Fading

(Path Loss)

These slides contains copyrighted materials from Prentice Hall Inc.. These figures are provided as instructor resources, and sources of these figures are:Wireless Communications and Networking, Jon W. Mark, Weihua ZhuangWireless Communications: Principles and Practice, Theodore S. Rappaport

Wireless Communications 06-88-440-01

Small-scale and large-scale fading

Figure 4.1 Small-scale and large-scale fading.

Free Space Propagation

Free Space Propagation

2-Ray model

Classical 2-ray ground bounce model

Reflection from smooth surface

Vector addition of 2 rays

Diffraction geometry

Knife-edge diffraction

v=f(d1,d2,h)

Knife-edge diffraction loss

Multiple knife-edge diffraction

Typical large-scale path loss

Measured large-scale path loss

Area versus Distance coverage model with shadowing model

2-D Propagation Raster data

Representing propagation

Algorithm for line of sight (LOS)

Okumura and Hata’s model

Walfisch and Bertoni’s model

Measured data from San Francisco

Partition losses

Ericsson’s indoor model

Measured indoor path loss

Measured indoor path loss

Measured indoor path loss

Devasirvatham’s model

Method of Images

Normalized local Mean