Figure 17.

Solution of the Problem 4 defined in (22), $K=5$ users located opposite of the windows, ${\mathrm{\Phi }}_{1/2}={60}^0$. (a) $\lambda =0.01$, $a=1$, G = 0.32. (b) $\lambda =0.5$, $a=1$, G = 0.55.