D-band Channel Modelling by 3D Ray Tracing for Joint Communications and Sensing

This paper presents 3D geometrical channel modelling experiments in the D-band frequency and presents the feasibility to develop joint communications and sensing (JCAS) applications in this spectrum. We propose a novel flexible 3D ray tracer for deterministic channel modelling in D-band and its output is benchmarked with existing measurements with quantified differences, showing that the received power deviation is within 2 dB, the delay deviation is within 1 ns and the angle deviation is within 4. Statistics of the multipath components simulated by the ray tracer are also investigated under different ray tracing configurations, featuring a non-linear relationship versus the scatterer settings, and the output of the ray tracer can be exploited for sensing applications.