Channel sounding techniques for applications in THz communications: A first correlation based channel sounder for ultra-wideband dynamic channel measurements at 300 GHz

THz communications are a promising possibility to achieve data rates around and above 100 Gbit/s in the near future. Nevertheless, for every communication system the knowledge of the typical propagation characteristics is essential for each application scenario. In this paper, currently available channel sounding techniques are briefly reviewed in regard to the proposed applications for THz communications. Finally, a novel correlation-based channel sounder for 300 GHz is presented and evaluated according to the applications scenarios.