Computational Efficiency Improvement of Frequency Post-Processing In Ultra-Wideband Propagation Modeling Using Polynomial Interpolation Functions

Abstract

One  of  the major  challenges  in  site-specific  indoor  propagation  modeling  of  ultra-wideband  electro-magnetic
waves  is  the  intensive  computational  cost  of  the  problem.  In  fact,  the  large  bandwidth  in  ultra-wideband
propagation modeling in the problem causes considerable frequency dependence in the propagation mechanisms
and  antenna  patterns  that  should  be  properly  considered.  The  polynomial  interpolation  functions  have  been
incorporated  in  the  ray  tracing  to  increase  computational  efficiency.  Thus,  field  calculations  need  to  be
performed  at  a  few  frequency  samples.  Using  appropriate  interpolation  functions  reduces  the  computational
burden  of  the  post-processing  stage,  without  decreasing  the  accuracy  of  results.  Therefore,  as  shown  in  the
numerical results by using the presented method in this study, the simulation time is reduced several times than
the reference method.

Keywords


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