Channel Characteristics of Rail Traffic Tunnel Scenarios Based on Ray-Tracing Simulator

Table 3

Path loss fitting result at 1.8 GHZ.

Parameter	A	n
Tunnel a	41.29	1.77	0.74
Tunnel b	39.46	1.88	0.45
Tunnel c	31.82	2.30	1.60
Tunnel d	41.29	1.84	0.60