COST 231 Walfisch-Ikegami Model

Introduction

This empirical model is a combination of the models of J. Walfisch and F. Ikegami. It was enhanced by the COST 231 project. The new name is therefore COST-Walfisch-Ikegami Model.

The model considers the buildings in the vertical plane between the transmitter and the receiver. Street widths, buildings heights as well as transmitter and receiver heights are considered.

Propagation scenario with the

COST 231 Walfisch-Ikegami Model.

Parameters

The general parameters of the model are:

• Frequency f (800...2000 MHz)

• Height of the transmitter h_TX (4...50 m)

• Height of the receiver h_RX (1...3 m)

• Distance d between transmitter and receiver (20...5000 m)

Parameters depending on the buildings:

• Mean value of building heights h_ROOF

• Mean value of widths of streets w

• Mean value of building separation b  
  

The classical COST Walfisch-Ikegami model determines the mean street width, mean building height, mean  building separation for the whole building database (i.e. the whole cell area).

But of course a city is not homogenous, e.g. in some regions the buildings are taller compared to other areas.
WinProp increases the accuracy of the model because the three parameters depending on the buildings (street width, building heights, building separation) are not identical for all locations in the cell. They are actually analyzed individually for each receiver pixel based on the actual buildings in the vertical plane between Tx and Rx.

Brochure with urban  propagation models.

See a comparison between different urban prediction models.

Read more about urban prediction models

Read more about urban databases

Read more about the  COST 231 Project