Wideband measurements of angle and delay dispersion for outdoor and indoor peer-to-peer radio channels at 1920 MHz
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Abstract
This paper presents spatio-temporal measurements
for the peer-to-peer radio channel at a center frequency of
1920 MHz with 140 MHz of radio-frequency bandwidth. The measurements
were taken using a spread-spectrum channel sounder
and an automated spatial probing system that uses precise computer-
controlled positioning and orientation of omnidirectional
and directional (30° beamwidth) antennas to measure both
the angles-of-arrival and time-delays of multipath components.
Transmitter-receiver configurations included six outdoor-to-outdoor
cross-campus locations at Virginia Polytechnic Institute and
State University (17–219 ns rms delay spread, 0.36–0.91 angular
spread—using the unitless definition of angular spread defined
in [1]), three outdoor-to-indoor locations (27–34 ns rms delay
spread, 0.78–0.98 angular spread), and three indoor-to-indoor
locations (29–45 ns rms delay spread, 0.73–0.90 angular spread).
The paper also quantitatively describes a trend that shows how
angular spread increases with increasing delay spread.
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2003-05
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