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\title{95 GHz Indoor Propagation Measurement and 3GPP-Compatible Channel Model
for Sub-THz Indoor Short-Range Communications~}



\author[1]{Yusuke Koda}%
\author[1]{Norichika Ohmi}%
\author[1]{Hiroaki Endo}%
\author[1]{Hiroshi Harada}%
\affil[1]{Graduate School of Informatics, Kyoto University}%


\vspace{-1em}



  
  \date{May 01, 2026}


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\begin{abstract}
This study presents a 95 GHz indoor channel measurement campaign for an
ultra-wideband short-range communication scenario and proposes an
intra-cluster stochastic channel generation procedure compatible with
the well-known 3GPP stochastic channel model (SCM) for this use case
with a larger bandwidth than 2 GHz. Recently, a 3GPP-compatible SCM for
device-to-device (D2D) short-range communication in a bandwidth of 2 GHz
has been developed at the 60 GHz band to provide a unified channel
generation framework aligned with 3GPP-led cellular-type communications
with lower bandwidth (e.g., 400 MHz typical for millimeter wave
communications). This study aims to extend this framework for an upper
band and larger bandwidth by defining the experimentally found
large-scale parameters at 90--100 GHz while adjusting the intra-cluster
subpath generation mechanism. To this end, we first conduct a wideband
multipath channel measurement at 95 GHz center frequency with 4 GHz
bandwidth in a simple conference room scenario as an exemplary
environment of wideband short-range communication. Statistical
characteristics of a complete set of large-scale parameters (LSPs) for
running the 3GPP-compatible SCM are derived where LSP trends specific to
D2D short-range communication scenarios in a small conference room and
extendable from the recent 60 GHz measurements are observed. Moreover,
we propose an unequal intra-cluster subpath generation procedure,
serving as an additional adjustment for accurate channel generation for
bandwidths greater than 2 GHz. Numerical evaluation reveals the
feasibility of generating channel impulse responses capturing more
accurate characteristics at both the large-scale level and intra-cluster
level. Specifically, owing to the proposed adjustment, the statistical
characteristics in the intra-cluster subpath well fit the results from
our presented measurements.

\selectlanguage{ngerman}\textbf{© 2025 IEEE. Personal use of this material is permitted.
Permission from IEEE must be obtained for all other uses, in any current
or future media, including reprinting/republishing this material for
advertising or promotional purposes, creating new collective works, for
resale or redistribution to servers or lists, or reuse of any
copyrighted component of this work in other works.}

\par\null

\textbf{Published version :~10.1109/JMW.2025.3562285}%
\end{abstract}\selectlanguage{ngerman}%



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