. Consider a mobile communication system using a carrier frequency of 900 MHz. A mobile in...
. Consider a mobile communication system using a carrier frequency of 900 MHz. A mobile in this system is travelling at a speed of 40kmph towards the base station in the cell. Calculate the frequency of the received signal. If the mobile user transmits date at rate of 100 Kbps, determine whether the channel is slow or fast fading.
Homework Answers
Answer :- Due to Doppler effect the received frequency will be more as mobile user is moving towards the base station cell. The received frequency is-
The doppler spread value is-
the coherence time is-
symbol period = 1/100 ms = 10 us.
Since coherence time is less than symbol period, hence it is a fast fading.
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