Fig. 6From: Performance analysis of cooperative cognitive MIMO multiuser downlink transmission with perfect and imperfect CSI over Rayleigh fading channelsDiversity and coding gains comparison for the CC-MIMO multiuser systems with perfect CSI under different antenna equipment (ρ 1 = ρ 2 = 1, M = 2, ω 1 = ω 2 = 1, Ω3 = Ω4 = 2) (a) N 1 = 12, N 2 = 3; (b) N 1 = 2, N 2 = 6Back to article page