Research Article

A Temporal Millimeter Wave Propagation Model for Tunnels Using Ray Frustum Techniques and FFT

Table 1

Comparison of computation times for the tunnel structure with different level of discretization.

Number of mesh cellsNumber of frustumsBlock “A”Block “B”
(10,000 points)
Block “C” (1 point)
512 samples, IFFT

1,068138,55014.59 (sec)47.03 (sec)0.47 (sec)
3,452346,90039.14 (sec)137.63 (sec)0.47 (sec)
5,674490,24172.90 (sec)175.78 (sec)0.485 (sec)
9,068824,330146.95 (sec)211.59 (sec)0.53 (sec)