Figure 5
From: Improved and weighted sum rate maximization for successive zero-forcing in multiuser MIMO systems
Proportion of time that user index is ordered in a given position to maximize SZF weighted sum rate, where user weights equal 1/10 of user indices ( w k = k /10); M T = 8, K = K 0 = 4, N k = 2 for each user. Index "0" indicates no user encoded in that position. (a) User index is ordered first. (b) User index ordered second. (c) User index ordered third. (d) User index ordered fourth.