Question: Measurements show that path loss in decibels in an urban environment can be estimated as L = 40 + 30.log10(d) +20.log10(f), where d is

Measurements show that path loss in decibels in an urban environment can be estimated as L = 40 + 30.log10(d)

Measurements show that path loss in decibels in an urban environment can be estimated as L = 40 + 30.log10(d) +20.log10(f), where d is the distance between base-station and mobile in km and fis frequency in MHz. A cellular phone system is to be installed in which each cluster has 12 different hexagonal cells which are not sectorised. Each different cell uses a different block of frequencies. Calculate the signal-to-interferer ratio that will be achievable in the cellular phone system. Your answer should be expressed to the nearest tenth of a decibel.

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