Observations on the Angular Statistics of the Indoor Sub-THz Radio Channel at 158 GHz

TL;DR

This study analyzes the angular statistics of the indoor sub-THz radio channel at 158 GHz, revealing that while LOS dominates, significant multipath signals arrive from all directions, with median gain following a linear pattern offset from LOS.

Contribution

It provides new statistical insights into the directional channel gain at 158 GHz in indoor environments, based on extensive measurement data.

Findings

LOS power dominates the received signal

Multipath signals arrive from all azimuth directions

Median directional gain follows a linear pattern offset from LOS

Abstract

This paper presents selected results from a channel measurement campaign conducted in a shopping mall scenario at 158 GHz. The focus is on the statistical analysis of the collected measurement data in terms of directional channel gain. Although most power is received from the line-of-sight (LOS) direction, significant multipaths arrive from all measured azimuth directions. The median of the sorted directional channel gain can be approximated by a linear curve showing an offset of about 10 dB with respect to the LOS direction.