Question

Use Hata model, assuming that carrier frequency is 900 MHz, mobile antenna height is 1.5 m, and base station antenna height is 30 meter, determine the required transmit power level to obtain a 5 km cell radius when the receiver sensitivity is −104 dBm

Answer 1

Hata model for path loss L_p:

Where

f_c = 900 MHz

d = cell radius = 5 km

h_te = transmitter i.e. base station antenna height = 30 m

h_re = receiver i.e. mobile station antenna height = 1.5 m

and

  

Transmitted power

= path loss + receiver sensivity

= 156.52 - 104 dBm

= 52.52 dBm [Ans]