Data were acquired in bursts of 64 or 128 equally spaced impulses using a stationary transmitter and mobile receiver. Several environment (urban high-rise, suburban, urban, and semi-rural) were measured, each with a continuous acquisition of bursts spaced approximately 8 seconds apart. The purpose of the measurements was to characterize the radio propagation for cell sites in the Phoenix, AZ area.

• Carrier Frequency: 915 MHz
• Single Channel
• Mobile Receiver, Stationary Transmitter
• Tx Power: 100 W EIRP
• Antennas
  • Tx: Vertical dipole with 180 degrees beamwidth located on a cellular tower.
  • Rx: Vertically polarized antenna (omni directional) located on 10' high van.
• Measurement Environment
  • Urban high-rise
  • Suburban
  • Urban
  • Semi-rural
• AGC used (60 dB dynamic range
• Data marked with GPS coordinates and speed
• PN code bit rate: 10 MBits/sec (20 MHz null-to-null bandwidth)
• Resolution: 100 ns (100 ft)
• Maximum delay: 51.1 µs
• Number of acquisitions in a burst: 64 and 128; accurately spaced and timed for maximum Doppler shifts.
• Absolute timing to give time \of travel.

Sample Data from Phoenix Measurements — (Support NOT available)

Scatter Plots (3D and Contour) of Sample Data

Sequential Impulse Plots (3D and Contour) of Sample Data

The sample data was acquired at the Washington Cellular Base Station Site, Sector C. This is an urban area (building 1-3 stories high, mixed with houses). There are three bursts of data (records) within this file (00000145,sep), each consisting of 64 evenly spaced impulse acquisitions. Each burst is spaced approximately 8 seconds apart. The speed of travel information, exact location, and spacing between impulse acquisitions is contained within the file header information. The file format is contained in the pdf document listed below. Matlab M files for viewing the data are also available in the zip file listed below.

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Download data file 00000145.sep - 1.5 MBytes

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