Abstract

This study proposes a modified 3GPP-compatible stochastic channel model (SCM) including a modeling algorithm for sub-terahertz (THz) ultra-wideband indoor short-range communication systems based on real-world measurements, which serves as a novel platform to model and generate sub-THz multipath channel characteristics for physical-layer link-level simulations. We first performed a wideband multipath channel measurement at 95 GHz with a bandwidth of 4 GHz, and analyzed the power angular delay profiles, omnidirectional delay profiles, and power angular profiles. Second, motivated by the issue of reproducibility and transparency in the current 3GPP SCM channel report, we developed a complete algorithm that semiautomatically extracts the channel parameters necessary for the subsequent channel impulse response generation while displaying the relationship between the model parameters and measurement data. Moreover, we propose an improved 3GPP SCM-based channel generation framework that enhances the statistical characteristics of the generated channel responses to fit the sub-THz indoor short-range communication at approximately 100 GHz. Simulation results indicated the feasibility of the proposed sub-THz channel model; the results were consistent with the real measurement results in terms of both delay and angular characteristics at the inter-cluster and intra-cluster levels.