Consider a large cellular network in which BSs are located in the centers of a regular square grid. The path-loss expres

[answerhappygod]

Consider a large cellular network in
which BSs are located in the centers of a regular square grid. The
path-loss expression is given as (in dB) PL = 52 + 32 log
d, where d is the distance between the
transmitter and the receiver; for simplicity, shadowing is not
considered. Assume that all the BSs transmit at the same transmit
power and have omni-directional antennas.
Consider a worst-case (cell-edge)
user which is located at the vertex of the square cell from which
it is being served. In an interference-limited scenario, compute
the downlink SIR (i.e., ignore the noise power) for this worst-case
user for two different cluster size (N) values:
Although the user will receive
co-channel interference from a very large number of BSs, include
only the first three most dominant (strongest) interferers in your
SIR calculations.