A model for predicting the power delay profile characteristics inside a room

Author

Holloway, Christopher L. ; Cotton, Michael G. ; McKenna, Paul

Author_Institution

Inst. of Telecommun. Scis., Dept. of Commerce, Boulder, CO, USA

Volume

48

Issue

4

fYear

1999

fDate

7/1/1999 12:00:00 AM

Firstpage

1110

Lastpage

1120

Abstract

Multipath effects in indoor wireless communication systems exhibit a characteristic power delay profile (PDP) and can be a detriment to the system´s performance. We present a simplified model for calculating the decay rate of the PDP for propagation within rooms. This simplified model provides a time-efficient means of predicting system performance. Predictions of this in-room PDP model are compared to results obtained from a finite-difference time-domain (FDTD) model. Additionally, comparisons of the IPDP model to measured data are presented. The RMS delay spread is the second central moment of the PDP of a propagation channel and is a measure of the communication link degradation due to multipath. We also show results of the estimated RMS delay spread from this model and show comparisons to the measured data. This IPDP model can be used to investigate the effects of variable room size and properties of the surfaces (or walls) on the decay characteristics of the PDP

Keywords

delays; electromagnetic wave reflection; indoor radio; radio links; radiowave propagation; reverberation; FDTD model; ISI control; RMS delay spread; communication link degradation; decay characteristics; decay rate; finite-difference time-domain; indoor wireless communication systems; intersymbol interference; measured data; multipath; multipath effects; power delay profile characteristics; propagation channel; second central moment; surfaces; system performance prediction; variable room size; walls; Degradation; Delay effects; Delay estimation; Finite difference methods; Power system modeling; Predictive models; Propagation delay; System performance; Time domain analysis; Wireless communication;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.775360

Filename

775360