Fig. 6
From: Cramer-Rao bounds in the estimation of time of arrival in fading channels
CRB of the first arriving path k0 for different values of the SNR. Results are provided for different values of the temporal correlation α, different values of delay spread, and different values of angular spread. Four sensors and 50 channel vector estimates are available. The sampling rate set to twice the chip rate, and a roll-off factor of 0.5. a Top left: delay spread set to 5 T c , angular spread set to 18°. b Top right: delay spread set to 5 T c , angular spread set to 5°. c Bottom left: delay spread set to 2 T c , angular set to 18°. d Bottom right: delay spread set to 2 T c , angular spread set to 5°