On the Feasibility of High Speed Railway mmWave Channels in Tunnel Scenario

Table 1

Computation time (min) of total 1000 snapshots for orders of reflection.

1st	2nd	3rd	4th	5th	6th	7th	8th
2.8 (s)	5.7 (s)	11.4 (s)	36.1 (s)	212.6 (s)	(s)	(s)	(s)