Investigation of MIMO Channel Characteristics in a Two-Section Tunnel at 1.4725 GHz

Table 3

Estimation error metric values versus link distance (m).

	Position
	15	25	35	65	75	85
Metric
	0.3626	0.3974	0.3932	0.2933	0.3059	0.3040
	0.8377	0.8027	0.8018	0.8533	0.8553	0.8536