Electronic Communication Systems 2nd Edition by Roy Blake

Exercise 8

(a) Review the discussion of mobile propagation in Chapter15. Find the path loss in a typical urban environment in the cell phone frequency range if the base station antenna has a height of 20 m and the distance is 5 km.
(b) Find the power delivered to the base station receiver under the same circumstances if the base station antenna has a gain of 6 dBi and the feedline to the receiver has a loss of 2 dB.
(c) Suppose the phone described in part (a) of this question is used inside a vehicle, which causes a loss of 20 dB. What would be the effect on the answers for parts (a) and (b)