Characterization of the ORBIT indoor testbed radio environment

Haris Kremo, Jing Lei, Ivan Šeškar, Larry Greenstein, Predrag Spasojević

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

4 Scopus citations


We perform a set of measurements of channel frequency responses at different points in the room that accommodates the ORBIT indoor testbed using a vector network analyzer (VNA). To validate the data collected with VNA we use spectrum analyzer (SA) measurements, as well. Four measurements are performed over non-overlapping 100 MHz bands in the industrial, scientific, and medical (ISM) band, and in the unlicensed national information infrastructure (UNII) band. The fifth measurement spans the coarsely sampled .4 to 6 GHz band. From the measured frequency responses we calculate path loss model parameters. The path loss exponent is between 1.1 and 2 and the dynamic range of the signal is around 25 dB across different bands. Based on the frequency responses measured over the .4 to 6 GHz band we determine multipath intensity profiles (MIP) with fine time granularity. The comparison of MIPs to the ray tracing simulations generated with WiSE software indicates that the surfaces perpendicular to the plane defined by the transmit and receive antennas represent a significant source of reflections. However, the reflections from the floor, dropped ceiling, and roof are suppressed by the antenna elevation patterns.

Original languageEnglish (US)
Title of host publication2007 IEEE 66th Vehicular Technology Conference, VTC 2007-Fall
Number of pages5
StatePublished - 2007
Event2007 IEEE 66th Vehicular Technology Conference, VTC 2007-Fall - Baltimore, MD, United States
Duration: Sep 30 2007Oct 3 2007

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252


Other2007 IEEE 66th Vehicular Technology Conference, VTC 2007-Fall
Country/TerritoryUnited States
CityBaltimore, MD

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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