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Terahertz (THz) band (0.1--10 THz) communication is envisioned as a key technology to address the explosive growth in mobile data in recent years and the demand for high speed wireless communications. Major recent advances in device technologies are finally closing the THz gap and, thus, bringing this networking paradigm closer to reality. A general channel model is essential in designing and simulating communication techniques for the THz band. In this paper, we develop a stochastic multipath channel model for THz band communication for bounded area applications. Specifically, an analytical model for the number of single bounce multi-path components and the power delay profile in a rectangular deployment scenario is derived, considering the density of obstacles, variable geometry of the rectangle, the signal blocking by obstacles and the propagation properties of THz signals. The model is independent of the physical layer technology and can be tailored to different application scenarios. Extensive simulation results are provided and utilized to validate the developed analytical model.

Stochastic multipath channel modeling and power delay profile analysis for terahertz-band communication