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International Journal of Antennas and Propagation
Volume 2013, Article ID 350167, 7 pages
Research Article

Experimental UWB Propagation Channel Path Loss and Time-Dispersion Characterization in a Laboratory Environment

1Electromagnetic Radiation Group (ERG), Universitat Politècnica de València, 46022 Valencia, Spain
2Escuela de Ingeniería Electrónica, Universidad Pedagógica y Tecnológica de Somagoso, Somagoso, Colombia

Received 4 December 2012; Revised 1 March 2013; Accepted 11 March 2013

Academic Editor: Ahmed A. Kishk

Copyright © 2013 Lorenzo Rubio et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The knowledge of the propagation channel properties is an important issue for a successful design of ultrawideband (UWB) communication systems enabling high data rates in short-range applications. From an indoor measurement campaign carried out in a typical laboratory environment, this paper analyzes the path loss and time-dispersion properties of the UWB channel. Values of the path loss exponent are derived for the direct path and for a Rake receiver structure, examining the maximum multipath diversity gain when an all Rake (ARake) receiver is used. Also, the relationship between time-dispersion parameters and path loss is investigated. The UWB channel transfer function (CTF) was measured in the frequency domain over a channel bandwidth of 7.5 GHz in accordance with the UWB frequency range (3.1–10.6 GHz).