Comparison of measured and theoretical diffracted fields around building corners at 2.4 GHz

Nechayev, Y.I.; Constantinou, Constantinos; Lukama, L.

doi:10.1109/vtc.2001.956866

Cited by 2 publications

(1 citation statement)

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“…A MODIFIED EXPANSION FOR QUASI-2-D FIELDS Using (3) and ( 4), the electric field on the plane due to an arbitrary plane wave may be expressed in cylindrical coordinates as (6) which simplifies to (7) Using the expansion (8) and simplifying, (7) may be rewritten as (9) Observe that the conventional CWE described in (1) is a special case of (9) whereby and . Thus, (9) suggests a more general -dependent CWE of the form (10) Comparing the conventional CWE in (1) and the -dependent CWE in (10), we note that (10) is equivalently a CWE for a 2-D electric field with a wavenumber given by . Thus, to create an expansion for quasi 2-D fields, we could simply combine the basis functions from multiple -dependent CWEs provided that their corresponding are small.…”

Section: Quasi-2-d Electromagnetic Fieldsmentioning

confidence: 99%

Quasi 2-D Field Reconstruction Using the Conjoint Cylindrical Wave Expansion

Pirkl

Durgin

2009

IEEE Trans. Antennas Propagat.

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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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