Compute the SIR for a TDMA cellular system with diamond-shaped cells, where the cell radius R = 10 m and the reuse distance D = 60 m. Assume that the path-loss exponent within the cell is γI = 2 but that the intercell interference has path-loss exponent γ0 = 4. Compare with the SIR for γ = γI = γO = 4 and for γ = γI = γO = 2. Explain the relative orderings of SIR in each case.