Figure 2: Convergence of the GIA for setup 3a (JP-SU) under the per-antenna power constraint. The MSEs and differences, 𝑑 𝐺 and 𝑑 𝑃 defined in (52), as functions of the iteration number. Solid, dotted, and dashed lines are results with 1 0 l o g 1 0 𝑃 = 5 , 15, and 25 dB, respectively.