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Figure 4 | EURASIP Journal on Wireless Communications and Networking

Figure 4

From: Emulating extreme velocities of mobile LTE receivers in the downlink

Figure 4

Trajectory followed by the antenna during the acquisition of a single LTE subframe. An emulated speed of 400 km/h was used and the three interpolation factors I={1,2,3} were considered. Evaluating the results at a speed value of 400 km/h can be done 1) by measuring at the actual velocity of 400 km/h without time interpolation (I=1); 2) by measuring at half the speed with I=2; and 3) by measuring at 400/3=133.33 km/h with I=3. In all cases, the length of the trajectory described by the antenna is the same (close to 11 cm) and can be approximated by a straight line since the antenna describes a circle with a diameter of 2 m while rotating around the central pivot.

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