B.4 High speed train condition

25.1023GPPRelease 17TSUser Equipment (UE) radio transmission and reception (TDD)

The high speed train condition for the test of the baseband performance is a non fading propagation channel with one tap. Doppler shift is given by

(B.1)

where is the Doppler shift and is the maximum Doppler frequency. The cosine of angle is given by

, (B.2)

, (B.3)

, (B.4)

where is the initial distance of the train from BS, and is BS-Railway track distance, both in meters; is the velocity of the train in m/s, is time in seconds.

Doppler shift and cosine angle is given by equation B.1 and B.2-B.4 respectively, where the required input parameters listed in table B.9 and the resulting Doppler shift shown in Figure B.2 are applied for all frequency bands.

Table B.9

Parameter	Value
	300 m
	2 m
	300 km/h
	560 Hz

NOTE1: Parameters for HST conditions in table B.9 including and Doppler shift trajectories presented on figure B.2 were derived for Band a).

Figure B.2: Doppler shift trajectory