Consider that the structure of a cellular system is based on hexagonal
cells. The structure uses frequency-reuse scheme. Cells belonging to base
stations B1 and B2 are using the same frequency for transmission but all
other cells are using different frequencies. Therefore, co-channel
interference could exist only between cells B1 and B2. Cell B1 is our
desired cell where our vehicle is at distance 5km from B1, and B2 is co-
channel cell that can create interference. Assume the following:
1. Co-channel interference is due to base station B2 only.
2. Cell radius is 10 km.
3. Assume omni-directional antennas for both transmitter and receiver
A-Find Signal to Interference ratio (SIR)
B-If the transmitter power of 10W for all base stations, find the received
power by mobile from cell B1. Given that Path loss formula between
mobile and base station B1 is given as:
PL(d1)(dB) = 82dB + 10(2.5)log(d1 / d0) + Xσ (dBm). Xσ = 0dB.
Reference distance d0 is 1km
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