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

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

18 Citationer (Scopus)

Abstrakt

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.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Antennas and Propagation
Vol/bind64
Udgave nummer9
Sider (fra-til)4036-4048
Antal sider13
ISSN0018-926X
DOI
StatusUdgivet - 1 sep. 2016

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