A ray tracing technique to predict path loss and delay spread inside buildings

Scott Y. Seidel, Theodore S. Rappaport

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a ray tracing technique to predict path loss and delay spread in buildings. A computer program to predict radio propagation in buildings based on site-specific information such as wall locations and building materials is described. Using geometrical optics-based assumptions, rays are traced in three dimensions from a transmitter location. Line-of-sight, specularly transmitted, specularly reflected, and non-specularly transmitted and reflected rays are included in the model. The individual rays are combined coherently as a function of excess delay to form a power delay profile. Power delay profiles are used for qualitative comparison of measured and predicted propagation. Statistics such as path loss and rms delay spread are computed from the power delay profiles to provide quantitative comparisons. For the office environment studied, reasonable agreement between measured and predicted power delay profiles is found, path loss is predicted to within 6 dB, and rms delay spread is predicted to wimin 20 ns.

Original languageEnglish (US)
Title of host publicationGLOBECOM 1992 - Communication for Global Users
Subtitle of host publicationIEEE Global Telecommunications Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages649-653
Number of pages5
ISBN (Electronic)0780306082, 9780780306080
DOIs
StatePublished - Jan 1 1992
Event1992 IEEE Global Telecommunications Conference: Communication for Global Users, GLOBECOM 1992 - Orlando, United States
Duration: Dec 6 1992Dec 9 1992

Publication series

NameGLOBECOM 1992 - Communication for Global Users: IEEE Global Telecommunications Conference

Conference

Conference1992 IEEE Global Telecommunications Conference: Communication for Global Users, GLOBECOM 1992
CountryUnited States
CityOrlando
Period12/6/9212/9/92

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Information Systems
  • Information Systems and Management
  • Safety, Risk, Reliability and Quality

Cite this

Seidel, S. Y., & Rappaport, T. S. (1992). A ray tracing technique to predict path loss and delay spread inside buildings. In GLOBECOM 1992 - Communication for Global Users: IEEE Global Telecommunications Conference (pp. 649-653). [276436] (GLOBECOM 1992 - Communication for Global Users: IEEE Global Telecommunications Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/GLOCOM.1992.276436