Measurement-Based Channel Characterization in a Large Hall Scenario at 300 GHz

Sub-terahertz (Sub-THz), defined as the frequency
bands in 100-300 GHz, is promising for future generation communications
and sensing applications. Accurate channel measurement
and modeling are essential for development and performance
evaluation of the future communication systems. Accurate
channel modeling relies on realistic channel data, which should be
collected by high-fidelity channel sounder. This paper presents the
measurement-based channel characterization in a large indoor
scenario at 299-301 GHz. We firstly review the state-of-the-art
channel measurements at sub-THz frequency bands. We then
presented a VNA-based channel sounder for long-range measurements,
which uses the radio-over-fiber techniques. Channel
measurements using this channel sounder are conducted in a
large hall scenario. Based on the measurement data, we calculated
and analyzed key propagation channel parameters, e.g., path loss,
delay spread, and angular spread. The results are also analyzed
both in the line-of-sight (LoS) and none-LoS (NLoS) cases. The
large delay components in the measurements demonstrate the
possibility of the long-range channel measurement campaign at
300 GHz.