A)what is the maximum Doppler for a vehicle speed of 160 km/hr at 900MHz. B)what

Question

A)what is the maximum Doppler for a vehicle speed of 160 km/hr at 900MHz.
B)what is the minimum doppler(most negative for this case)
C)for this range of Doppler what is the corresponding speed at 1800MHZ

Explanation / Answer

For vehicular speeds, this translates to channel variation of the order of 100 Hz. Primary driver behind wireless communication system ... direct path has Doppler shift of + 50 Hz ... To get full diversity of 8, needs v > 30 km/hr at fc = 900Mhz. ... Maximum likelihood sequence detection is performed using the Viterbi algorithm. One second of Rayleigh fading with a maximum Doppler shift of 10 Hz. ... Doppler shift of 10 Hz and 100 Hz. These Doppler shifts correspond to ... respectively at 1800 MHz, one of the operating frequencies for GSM mobile phones.

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