Terahertz and Millimeter-Wave D2D Channel Characterization in an Office Workstation

In this paper, we present a detailed description of a propagation channel measurement campaign performed in an office workstation environment and provide a comprehensive channel model for this environment. To facilitate the measurement campaign, we developed a dual-band frequency-domain channel sounder system, which utilizes 4×4 virtual Multiple-Input-Multiple-Output (MIMO) and Single-Input-Single-Output (SISO) antenna configurations. The measurements were conducted at millimeter-wave (mm-wave) frequencies of 28-36 GHz and 58-66 GHz, and Terahertz (THz) frequencies of 140-160 GHz and 200-220 GHz for both Line-of-sight (LOS) and Obstructed-Line-of-Sight (OLOS) scenarios. Propagation channel parameters such as distance-dependent pathloss exponent, frequency-dependent pathloss component, shadowing gain and root-mean-squared (rms) delay spread statistics along with the small-scale fading statistics were extracted and presented in the paper. Furthermore, the channel model presented in this work was validated using delay spread statistics. The information provided in this work will be relevant to the development of Device-to-Device (D2D) wireless communication systems operating at THz and mm-wave frequencies in an office workstation environment.