105 GHz Multipath Propagation Measurements and Path Loss Model for
Sub-THz Indoor Short-Range Communications
Abstract
This paper performs a first wideband indoor channel measurement at the
105 GHz sub-terahertz (sub-THz) band and analyzes the multipath
characteristics in terms of the omnidirectional path-loss and angular
characteristics. The measurement campaigns with the 4 GHz bandwidth are
performed focusing on indoor short-range communication scenarios in a
conference room, corridor, and office room, which have been considered
in the primary 60 GHz communication systems standardized by the IEEE
802.15.3c/11ad. Moreover, to draw full understanding to scale the 60 GHz
indoor channel models and 60 GHz system designs for the 105 GHz band, we
also conduct 60 GHz channel measurements in the same environment with
few modifications in the channel-sounding system and performed the
comparison between these two bands. Based on these measurements, we
demonstrate the affinity that exists between 105 GHz and 60 GHz bands in
terms of path loss exponent and angular characteristics of multipath
components, shedding light on the hypothesis that several system designs
of the 60 GHz communication systems (e.g., beam switching for
non-line-of sight conditions) can be applied to the 105 GHz sub-THz
communication systems.
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