Hybrid Model For Reverberant Indoor Radio Channels Using Rays and Graphs

Gerhard Steinböck, Mingming Gan, Paul Meissner, Erik Leitinger, Klaus Witrisal, Thomas Zemen, Troels Pedersen

Research output: Contribution to journalJournal articleResearchpeer-review

17 Citations (Scopus)

Abstract

Ray-tracing tools allow for deterministic simulation of the channel impulse response. Studies show that these tools work well when the impulse response consists only of a few distinct components. However, measurements of the channel impulse response in indoor environments show a diffuse tail. This diffuse tail is difficult to include in ray-tracing due to the computational complexity.
We propose a hybrid model to include deterministic components and the diffuse tail by combining ray-tracing with a propagation graph. The recursive structure of the propagation graph allows for a computationally efficient calculation of the channel transfer function considering infinitely many components. We use ray-tracing and the theory of room electromagnetics to obtain the parameter settings for the propagation graph. Thus the proposed hybrid model does not require new or additional parameters in comparison to ray-tracing. Simulation results show good agreement with measurements with respect to the inclusion of the diffuse tail in both the delay power spectrum and the azimuth delay power spectrum.
Original languageEnglish
JournalI E E E Transactions on Antennas and Propagation
Volume64
Issue number9
Pages (from-to)4036-4048
Number of pages13
ISSN0018-926X
DOIs
Publication statusPublished - 1 Sep 2016

Fingerprint Dive into the research topics of 'Hybrid Model For Reverberant Indoor Radio Channels Using Rays and Graphs'. Together they form a unique fingerprint.

Cite this