Fig. 7From: Performance analysis of cooperative cognitive MIMO multiuser downlink transmission with perfect and imperfect CSI over Rayleigh fading channelsThe effect of primary system’s parameters on outage performance (ω 1 = ω 2 = 1, M = 2, N 1 = 12, N 2 = 3) (a) Imperfect CSI; (b) Perfect CSIBack to article page