Figure 3

Motivation of power control. Two-user QPSK signal constellations with (a) p2=0.3 and (b) p2=0.7 (p1=1 and θ i =0, for i=1,2).
Motivation of power control. Two-user QPSK signal constellations with (a) p2=0.3 and (b) p2=0.7 (p1=1 and θ i =0, for i=1,2).