Abstract—Millimeter-wave (mmWave) and Terahertz
(THz) will be used in the sixth-generation (6G) wireless
systems, especially for indoor scenarios. This paper presents
an indoor three-dimensional (3-D) statistical channel model
for mmWave and sub-THz frequencies, which is developed
from extensive channel propagation measurements conducted
in an office building at 28 GHz and 140 GHz in 2014
and 2019. Over 15,000 power delay profiles (PDPs) were
recorded to study channel statistics such as the number of
time clusters, cluster delays, and cluster powers. All the parameters
required in the channel generation procedure are
derived from empirical measurement data for 28 GHz and
140 GHz line-of-sight (LOS) and non-line-of-sight (NLOS)
scenarios. The channel model is validated by showing that
the simulated root mean square (RMS) delay spread and
RMS angular spread yield good agreements with measured
values. An indoor channel simulation software is built upon
the popular NYUSIM outdoor channel simulator, which
can generate realistic channel impulse response, PDP, and
power angular spectrum.
Index Terms—Millimeter-Wave; Terahertz; Indoor Office;
Channel Measurement; Channel Modeling; Channel
Simulation; 5G; 6G
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Millimeter Wave and Sub-Terahertz Spatial Statistical Channel Model for an Indoor Office Building
Abstract—Millimeter-wave (mmWave) and sub-Terahertz
(THz) frequencies are expected to play a vital role in 6G wireless
systems and beyond due to the vast available bandwidth of many
tens of GHz. This paper presents an indoor 3-D spatial statistical
channel model for mmWave and sub-THz frequencies based on
extensive radio propagation measurements at 28 and 140 GHz
conducted in an indoor office environment from 2014 to 2020.
Omnidirectional and directional path loss models and channel
statistics such as the number of time clusters, cluster delays,
and cluster powers were derived from over 15,000 measured
power delay profiles. The resulting channel statistics show that
the number of time clusters follows a Poisson distribution and
the number of subpaths within each cluster follows a composite
exponential distribution for both LOS and NLOS environments
at 28 and 140 GHz. This paper proposes a unified indoor statistical
channel model for mmWave and sub-Terahertz frequencies
following the mathematical framework of the previous outdoor
NYUSIM channel models. A corresponding indoor channel simulator
is developed, which can recreate 3-D omnidirectional,
directional, and multiple input multiple output (MIMO) channels
for arbitrary mmWave and sub-THz carrier frequency up to
150 GHz, signal bandwidth, and antenna beamwidth. The presented
statistical channel model and simulator will guide future
air-interface, beamforming, and transceiver designs for 6G and
beyond.
Index Terms—Millimeter-wave, terahertz, radio propagation,
indoor office scenario, channel measurement, channel modeling,
channel simulation, NYUSIM, 28 GHz, 140 GHz, 142 GHz,
5G, 6G.
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- Award ID(s):
- 1909206
- NSF-PAR ID:
- 10309418
- Date Published:
- Journal Name:
- IEEE journal on selected areas in communications
- Volume:
- VOL. 39,
- Issue:
- NO. 6
- ISSN:
- 1558-0008
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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