Question: Question 5 :[15 points] A stationary base station is transmitting signal to a stationary mobile unit located at a distance of 1 km from

Question 5 :[15 points] A stationary base station is transmitting signal to a stationary mobile unit located

Question 5 :[15 points] A stationary base station is transmitting signal to a stationary mobile unit located at a distance of 1 km from the base station. The mobile unit receives a power of -70 dBm from the base station. (a) What will be the minimum time taken (in sec.) by the signal to reach the mobile unit from the base station? (b) What will be the Doppler shift (in Hz) in the received signal at the mobile unit? (c) If the mobile unit is now placed at a distance of 0.5 km from the base station, what will be the power received (in dBms)? Assuming all other system parameters remain the same. Question 6: [15 points] A cellular system covers an area of 63 cells and uses a reuse factor of 7. The system has a total of 630 full-duplex channels available. A full-duplex channel is shared among eight different users using TDM (Time-Division Multiplexing). What is the maximum number of simultaneous voice calls supported in the system? Assume all cells are allocated with an equal number of channels.

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