 | Future wireless communication systems will require large network capacities beyond the capabilities of present and upcoming 5G technology. The trend of considering higher frequencies for their large bandwidths continues today into the sub-THz domain. The frequencies that are considered in this article are the ones investigated in the BRAVE beyond-5G project, i.e. in the 90-200 GHz spectrum. A ray-based deterministic tool is extended to those frequencies, which are then exploited to simulate and characterize the propagation channel properties in two different scenarios: 1) in-office and 2) in-street. A particular interest is brought to the path loss and delay spread statistics. The impact of the antenna beam width is also considered. Using deterministic simulations (even if not yet validated in the target spectrum but at lower frequencies) is a very convenient way to explore the sub-THz propagation characteristics, while channel measurements are only very few at those frequencies. Some very simple models have been derived that may contribute to the elaboration and evaluation of future sub-THz systems. |
|
