Time-Varying Channel Measurement and Analysis at 105 GHz in an Indoor Factory

As one of the sixth-generation (6G) candidate technologies, terahertz (THz) communication is considered a promising way to achieve high-precision capability and large capacity in the Industrial Internet of Things (IIoT) due to its wide bandwidth and short wavelength. This paper presents time-varying THz channel measurements at 105 GHz in an indoor factory (InF). Firstly, the number of the multipath components (MPC) and root-mean-square delay spread (RMS DS) in line-of-sight (LoS) and nonline-of-sight (NLoS) environments are analyzed and compared. Secondly, the correlation between power delay profiles (PDP) is described by the temporal PDP correlation coefficient (TPCC). Finally, the local region of stationarity (LRS) method is employed to characterize the stationary distance. A Burr distribution is used to fit the distribution of stationary distance. The work contributes to modeling the THz channel in the time-varying environment in InF.