How Many Users should be Turned On in a Multi-Antenna Broadcast Channel.

Wei Dai Youjian Liu Brian Rider How Many Users should be Turned On in a Multi-Antenna Broadcast Channel. 806-811 2007 conf/ciss/2007 CISS http://dx.doi.org/10.1109/CISS.2007.4298419 db/conf/ciss/ciss2007.html#DaiLR07