Wei Xu 0001 Yuan Cao 0002 Chunming Zhao 0001 Capacity Analysis of MIMO Group-Broadcast Channels with Time-Division Scheduling. 1331-1350 2013 68 Wirel. Pers. Commun. 4 https://doi.org/10.1007/s11277-012-0510-0 db/journals/wpc/wpc68.html#XuCZ13