Quasi 2-D Field Reconstruction Using the Conjoint Cylindrical Wave Expansion
Author(s)
Pirkl, Ryan J.
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Abstract
Off-the-horizon propagation severely degrades the
accuracy of any field reconstruction technique that presupposes a
two-dimensional (2-D) wireless channel. Therefore, employing the
2-D cylindrical wave expansion (CWE) to interpolate perimeter
channel measurements into a planar region often yields poor
results. Here, the CWE is adapted for real-world radio channel
measurements by selectively combining the basis functions from
two similar CWEs. Using both simulated and experimental measurement
data, it is shown that this conjoint CWE yields a more
accurate reconstruction than the conventional CWE yet requires
no additional measurements. Thereby, this field reconstruction-
based channel imaging technique will enable more complete
investigations of the wireless channel’s spatial behavior and allow
researchers to isolate and characterize the actual mechanisms
underlying radio wave propagation.
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Date
2009-04
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Text
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Proceedings