Improved High-Order FDTD Parallel Propagator for Realistic Urban Scenarios and Atmospheric Conditions

This letter introduces an improved finite-difference time-domain (FDTD) propagator for radiowave prediction in complex urban environments. The original method was based on an unconditionally stable scheme with a high-order formulation and material-independent perfectly matched layers in a moving win...

Full description

Saved in:
Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2016, Vol.15, p.1779-1782
Main Authors: Garcia Batista, Claudio, do Rego, Cassio G., Nunes, Marcelo Lucio, Fernandes Neves, Frederico
Format: Article
Language:English
Subjects:
Algorithms
Atmospheric measurements
Atmospheric modeling
Atmospheric refraction
Buildings
Computational modeling
Finite difference methods
Finite difference time domain method
High-order unconditionally stable finite-difference time domain (FDTD)
parallel algorithm
Parallel processing
Perfectly matched layers
radiowave propagation
Regularization
regularization of material discontinuities
Time-domain analysis
Urban environments
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This letter introduces an improved finite-difference time-domain (FDTD) propagator for radiowave prediction in complex urban environments. The original method was based on an unconditionally stable scheme with a high-order formulation and material-independent perfectly matched layers in a moving window algorithm (US-HO-MI-MW-FDTD). In the present work, the regularization technique is applied to treat material discontinuities and consequently to improve the accuracy of the high-order formulation. This permits the inclusion of urban buildings on the FDTD analysis. Moreover, the original algorithm is parallelized with the OpenMP library to achieve high computation performance and use finer FDTD meshes. The new propagator is validated through cases involving atmospheric refraction. Finally, we present and analyze a cellular system measurement campaign.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2016.2535177