Bridging asymptotic high-frequency approximation and full-wave numerical electromagnetic analysis for 6G networks.
At sub-THz frequencies, electrical dimensions of buildings reach hundreds of thousands of wavelengths. SBR coupled with uniform theory of diffraction (UTD) provides millimeter accuracy without the intractable memory scaling of full-wave solvers.
Custom CUDA kernels organize rays into spatial wavefront packets, minimizing thread divergence and achieving a 45x speedup compared to multi-threaded CPU ray tracers.
Comparison against 140 GHz indoor channel sounding campaigns showed path loss agreement within 1.2 dB and root-mean-square delay spread deviation of under 0.8 nanoseconds.