Experimental Characterization of LTE Wireless Links in High-Speed Trains

Figure 22

Doppler Spectrum for outdoor antenna 1 for the train moving at 100 km/h along the segments (a), (b), and (c).

(a) Doppler Spectrum for the train moving at 100 km/h along the segment (a)

(b) Doppler Spectrum for the train moving at 100 km/h along the segment (b)

(c) Doppler Spectrum for the train moving at 100 km/h along the segment (c)