Fig. 2From: Waveform domain framework for capacity analysis of uplink WCDMA systemsCapacity curves and capacity regions for a two-user set-up with N=2 and M=1. On the left-hand side, the solid lines represent the capacities with Gaussian input and the dotted lines represent the capacities with 4-QAM input. All the capacities are normalized by 1/N Back to article page