Fig. 8From: Coherent query scheme for wireless backscatter communication systems with single tagMatlab Simulink block diagram for the backscatter M-query scheme using USRP N210 a implemented USRP No.1 as the transmitter and receiver b 2-PAM non-coherent receiver chain for the backscattered data extraction c transmitter module USRP No.2 with phase tunning featureBack to article page