Original scientific paper

A SITE-SPECIFIC MODEL FOR PROPAGATION PREDICTION IN INDOOR WIRELESS COMMUNICATIONS

Ivan Vilović orcid.org/0000-0001-7578-758X ; Department of electrical engineering and computing, University of Dubrovnik
Robert Nađ orcid.org/0000-0001-8011-1429 ; Faculty of electrical engineering and computing
Nikša Burum ; Department of electrical engineering and computing, University of Dubrovnik

Abstract

Indoor wireless communications transport the vast information capacity using millimetre wave frequency band.
Accurate characterization of the propagation channel is an important requirement for design and implementation of a
local area network inside buildings. A tool for prediction of electromagnetic filed strength in indoor communications
has been presented. A 3D ray tracing model is developed based on accurate electromagnetic theories that
incorporate polarization characteristics. Propagation mechanisms for reflection and transmission are included in
the model. The developed software enables prediction of the signal strength at any receiving point of the specific
indoor environment. This deterministic model is compared with Motley-Keenan model. The obtained results from
both models are compared with measured data. The ray tracing model is used with measured electromagnetic
parameters. Non-destructive free space measurement method for the measurement of complex dielectric constant
of the walls and other obstacles is used. The accuracy of the model enables the usage of it for characterization of a
typical indoor environment for the performance evaluation of wireless local area network.

Keywords

indoor propagation; signal strength prediction; ray tracing; Motley-Keenan method; complex dielectric constant

Hrčak ID:

44040

URI

https://hrcak.srce.hr/44040

Publication date:

7.12.2009.

Article data in other languages: croatian

Visits: 1.657 *