# The propagation channel is described by the path loss model given by (3.92) with n = 3.5 and the…

The propagation channel is described by the path loss model
given by (3.92) with n = 3.5 and the average received power of _40 dBm
atr0 = 1 km. The signals also suffer log-normal shadowing with 6 dB standard
deviation. The receiver has a noise power of _100 dBm. The SNR level is
required to be higher than 20 dB for 95% of the time in the coverage area.

a. Determine the required average received signal power at a
distance r.

b. Determine the distance corresponding to the average
received signal power found in part (a).

c. Suppose that the system has a cell radius of R = 30 km.
Determine

The propagation channel is described by the path loss model
given by (3.92) with n = 3.5 and the average received power of _40 dBm
atr0 = 1 km. The signals also suffer log-normal shadowing with 6 dB standard
deviation. The receiver has a noise power of _100 dBm. The SNR level is
required to be higher than 20 dB for 95% of the time in the coverage area.

a. Determine the required average received signal power at a
distance r.

b. Determine the distance corresponding to the average
received signal power found in part (a).

c. Suppose that the system has a cell radius of R = 30 km.
Determine the useful coverage area.

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