529 research outputs found
Sparsity in the Delay-Doppler Domain for Measured 60 GHz Vehicle-to-Infrastructure Communication Channels
We report results from millimeter wave vehicle-to-infrastructure (V2I)
channel measurements conducted on Sept. 25, 2018 in an urban street
environment, down-town Vienna, Austria. Measurements of a frequency-division
multiplexed multiple-input single-output channel have been acquired with a
time-domain channel sounder at 60 GHz with a bandwidth of 100 MHz and a
frequency resolution of 5 MHz. Two horn antennas were used on a moving
transmitter vehicle: one horn emitted a beam towards the horizon and the second
horn emitted an elevated beam at 15-degrees up-tilt. This configuration was
chosen to assess the impact of beam elevation on V2I communication channel
characteristics: propagation loss and sparsity of the local scattering function
in the delay-Doppler domain. The measurement results within urban speed limits
show high sparsity in the delay-Doppler domain.Comment: submitted to IEEE International Conference on Communication
Towards 6G with THz Communications: Understanding the Propagation Channels
This article aims at providing insights for a comprehensive understanding of THz propagation channels. Specifically, we discuss essential THz channel characteristics to be well understood for the success of THz communications. The methodology of establishing realistic and 6G-compliant THz channel models based on measurements is then elaborated on, followed by a discussion on existing THz channel measurements in the literature. Finally, future research directions, challenges and measures to enrich the understanding of THz channels are discussed
Towards 6G with THz Communications: Understanding the Propagation Channels
This article aims at providing insights for a comprehensive understanding of
THz propagation channels. Specifically, we discuss essential THz channel
characteristics to be well understood for the success of THz communications.
The methodology of establishing realistic and 6G-compliant THz channel models
based on measurements is then elaborated on, followed by a discussion on
existing THz channel measurements in the literature. Finally, future research
directions, challenges and measures to enrich the understanding of THz channels
are discussed.Comment: 7 page
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