IEEE Transactions on Vehicular Technology, 48, no. 4 (July 1999): 1110–1120

A Model for Predicting the Power Delay Profile Characteristics Inside a Room

doi: 10.1109/25.775360

Cite This Publication

Christopher L. Holloway, Michael G. Cotton ORCID logo, Google Scholar logo, Scopus logo, Web of Science logo, and Paul M. McKenna ORCID logoScopus logoWeb of Science logo

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: multipath; electromagnetic wave propagation; propagation model; radio wave propagation; radio link; indoor propagation channel; reverberation; predictive models

For technical information concerning this report, contact:

Paul M. McKenna
Institute for Telecommunication Sciences
(303) 497-3474
pmckenna@ntia.doc.gov

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For questions or information on this or any other NTIA scientific publication, contact the ITS Publications Office at ITSinfo@ntia.gov or 303-497-3572.

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